The software development of Check_MK is organized in so called Werks. A Werk is any change or bug fix that has influence on the user's experiance. Each Werk has a unique ID, one of the levels Trivial Change, Prominent Change or Major Feature and one of the classes Bug Fix, Feature or Security Fix.
Whenever you make an update to a new Check_MK version please make sure that you have understood all incompatible changes. You might have to adapt your configuration.
If you like to get informed about new werks, you can subscribe to various mailinglists which inform you about werks of specific levels.

Werks für:Branch:Till:
Show only incompatible werksShow more than 20 versions

Trivial Change Prominent Change Major Change New Feature Bug Fix Security Fix Incompatible

Version 1.4.0p30
#5713 Checks & Agents: mk_logwatch: Fix message rewriting and continuation patterns
#5754 Checks & Agents: netapp_api_vf_stats: now uses the correct number of CPUs
#5964 Checks & Agents: sym_brightmail_queues: Fixed ValueError if some queues do not provide all necessary data
#5798 Core & Setup: Fixed Check_MK Check Helper file locking errors
#5834 Event Console: Fixed SNMPv3 credential handling in the event console.
Version 1.4.0p29
#5961 Checks & Agents: nfsmounts cifsmounts: Fixed the blemish "Invalid parameter" displayed in service discovery dialog
#5921 Checks & Agents: mk_logwatch frozen binary for Windows was broken
#5957 GUI: LDAP: Locking of users using "Authentication Expiration" plugin was not unlocking users
#5956 packages: Updated NagVis to 1.9.7
Version 1.4.0p28
#5795 Checks & Agents: Realtime Checks: fixed race condition which caused loss of counter data
#5912 Checks & Agents: mk_jolokia: Fixed exception in Bakery rule if an instance is set
#5830 Core & Setup: Fixed DST shift correction for downtimes, causing CMC to use 100% CPU
#5942 GUI: Fixed broken BI availability with limit set to 0 (regression in 1.4.0p26)
#5943 Reporting & Availability: Fixed broken PDF export of host/service history views
#5931 WATO: Fixed "skipping unimplemented check" warning message of active checks
#5797 WATO: netapp_api_luns: fixed interchanged free/used names in WATO configuration rule
#5907 packages: CentOS/RedHat: Add explicit dependency to php-cli to fix possible broken PNP graphs
#5906 packages: NagVis: Updated to 1.9.6
Version 1.4.0p27
#5775 Agent Bakery: Fixed missing McAfee AV client baklet for Windows systems
#5882 Agent Bakery: Agent bakery host selection was showing wrong settings after saving
#5790 Checks & Agents: Fixed broken calculation of correct host check command
#5919 Checks & Agents: Windows agent crashed with a lot of transport protocols available
#5788 Checks & Agents: check_bi_aggr: no longer reports "SubjectAltNameWarning" when initiating connection
#5792 Checks & Agents: Agent Encryption: No longer trying to decrypt all incoming tcp data when a "Encryption" rule with an arbitrary value was set
#5710 Checks & Agents: jolokia_generic.string: Fix broken parameter handling
#5910 Checks & Agents: ups_cps_outphase: Fixed decimal place in current outphase
#5909 Checks & Agents: fortigate_sessions fortigate_cpu: Fixed duplicated discovery if needed information is at two places
#5786 Checks & Agents: Fixed broken host check command "Always assume to be up"
#5911 Checks & Agents: mem.linux: Fixed Perf-O-Meter displaying wrong usage if swap is used
#5876 Checks & Agents: fileinfo_groups: Increased size of input fields
#5712 Checks & Agents: cisco_mem cisco_mem_asa cisco_mem_asa64: No longer crash when total memory is reported as 0.
#5748 Checks & Agents: cisco_cpu cisco_nexus_cpu: improve snmp_scan_functions
#5711 Checks & Agents: cisco_mem_asa64: Fix incorrect labelling of graph
#5749 Checks & Agents: tcp_conn_stats: use ss by default if present otherwise fall back to cat /proc/net/tcp
#5751 Event Console: Add contact group contacts of EC rule if host is not a core host
#5904 GUI: Add view name to view permission help text
#5880 GUI: Dashboards: Fixed broken links in views provider columns
#5879 GUI: Dashboard: View dashlets were not applying row limits
#5776 HW/SW-Inventory: win_reg_uninstall: Fixed transposed month and day fields of dates which caused 'Inventory failed: unconverted data remains'
#5745 Notifications: handle deferred notification properly
#5892 Reporting & Availability: Tables: Fixed backgrounds not filling whole table cells
#5891 Reporting & Availability: Fixed column layout of host/service report tables (smaller titles)
#5890 Reporting & Availability: Fixed possible exception in PDF export when showing services withput metrics (regression in 1.4.0p26)
#5747 Reporting & Availability: fix daylight saving time error
#5893 Reporting & Availability: Fixed some report table layout problems
#5719 WATO: The Start URL is now configured optionally for new users
#5905 WATO: Configured "Receive fallback notifications" attribute of users was not displayed correctly
#5889 WATO: Fixed visible HTML tag in WATO folder permission error message
#5874 WATO: Improved diagnose logging for WATO integrated Git
#5886 WATO: Improved performane of "ineffective ruleset" searching
#5875 WATO: Git: Fixed error "git add --all ... is outside repository" with older git versions
#5881 WATO: Tag condition editor could show wrong tag selection after submission
#7516 packages: diskspace cleanup: now also deletes any connected .info file when removing a rrd file
Version 1.4.0p26
#5274 Agent Bakery: cmk-update-agent: prevent saving state file to wrong directory on windows
#5869 Checks & Agents: mem.win: Fixed displaying of percentage thresholds in graphs (Regression in 1.4.0p21)
#5782 Checks & Agents: cmk-update-agent: Adapt logging for permission check on windows
#5704 Checks & Agents: Windows agent: prevent crash without IPv6 support
#5741 Checks & Agents: isc_dhcpd: allow dynamic-bootp entries
#5861 GUI: Availability: Fixed missing warning about reached logrow limit for BI aggregations
#5864 GUI: Host- and service state filters were not set when adding a filtered view to a dashboard
#5871 GUI: Improved service view rendering performance when showing perfometers
#5856 GUI: Fixed host auxiliary tag filter with service views
#5867 Reporting & Availability: Report scheduler: Sending mails manually could be triggered multiple times when reloading the page
#5853 Reporting & Availability: Fixed escaped HTML entities in view columns
#5866 WATO: Fixed performance issue on ruleset search and discovery page with a large number of rules
#5860 WATO: Fixed description of recurring downtime rules
#5863 WATO: Windows agent sections: Fixed incompatibility with rules created before 1.4.0p14
#5862 WATO: Wiondows agent sections: Fixed incompatibility with rules created before 1.4.0p22
#5855 packages: Updated NagVis to 1.9.5
Version 1.4.0p25
#5271 Agent Bakery: Better handling of erroneous deployment information in Agent Bakery
#5763 Agent Bakery: mk_jolokia: relative URI was not written into configuration file
#5762 Agent Bakery: mk_jolokia mk_logwatch win_eventlog win_logwatch winperf: Fixed UnicodeEncodeError while baking agents
#5781 Agent Bakery: Check_MK Update Agent: Now automatically repairs missing agent plugins after a failed windows agent update
#5703 Checks & Agents: Windows agent: section logwatch output was cut abruptly with 'vista_api=yes'
#5709 Checks & Agents: apc_netbotz_sensors apc_netbotz_other_sensors: Fix discovery for newer models
#5760 Checks & Agents: infoblox_node_services: Unknown service IDs led to a check crash
#5701 Checks & Agents: Windows agent: renew logging
#5761 Checks & Agents: ipmi: Fixed wrong perfdata format which led to RRD creation errors
#5557 Checks & Agents: check_mk_agent.aix: Fixed bug in uptime because AIX is not able to interpret ? and + in regexes
#5778 Checks & Agents: mk_logwatch.exe: fixed broken python frozen binary
#5738 Checks & Agents: Make custom attributes of a host available for the core
#5764 Checks & Agents: df.include: Fixed dynamic levels in ruleset 'Filesystem (used space and growth)'
#5735 Event Console: Fixed PDF export of "Event Detail" page
#5670 Event Console: Handle history files from older EC versions, which have fewer columns.
#5740 Event Console: mkeventd: reload configuration on SIGHUP used e.g. by omd reload
#5729 GUI: Fixed loosing configured icons when editing bookmark lists
#5725 GUI: Fixed changing view filter default values not being effective right after editing
#5667 GUI: Fixed broken newline rendring in sidebar user messages
#5665 GUI: Improved timeout error handling when trying to download agent output of a host
#5723 GUI: Fixed broken sorting of services
#5461 Livestatus: Fixed WaitTimeout handling
#5460 Livestatus: Waiting without a wait condition immediately returns now
#5668 Livestatus: Fixed potential segfault when talking to the event console
#5728 Metrics System: Fixed larger graph legends being cut off in graph dashlets
#5273 Metrics System: Fix display of CustomGraphs for metrics without current performance data
#5780 WATO: fileinfo.groups: Fixed check parameters display bug in service discovery page
#5733 WATO: Fixed bulk deletion of users with special characters in their ID
#5721 WATO: Saving backup jobs: Fixed AttributeError() occuring while handling an exception
#5727 packages: nrpe: Fixed missing check_nrpe on stretch
Version 1.4.0p24
#5619 Checks & Agents: memory.include: Ignoring levels led to a crash because the handling of the paramters was not correct
#5689 Checks & Agents: Newline in mrpe include file crashed Windows agent
#5487 Checks & Agents: isc_dhcpd: Resolve performance issues
#5660 Checks & Agents: Windows agent: Removed unused nowin.exe
#5614 Checks & Agents: raritan_pdu_ocprot: Fixed wrong scaling of current value
#5602 Checks & Agents: ups_modulys_alarms: Make check handle devices outputting NULL instead of integer type flags on some values
#5489 Checks & Agents: pvecm_status: Fix parsing of agent output that could lead to a crash
#5488 Checks & Agents: veeam_jobs: Add support for new veeam API
#5494 Checks & Agents: nfsmounts cifsmounts: increase timeout of nfsmounts and deliver correct status details
#5699 Checks & Agents: Windows agent crashed at non-existent Skype perf counter
#5554 Checks & Agents: ps: Fixed missing Total RAM if AIX is the source and percentual thresholds are configured
#5634 Core & Setup: Fixed slowing of CMC stop operation when SNMP checks are running
#5595 Event Console: Fixed "Events of monitored host" view showing events not related to the wanted host
#5659 GUI: Master control snapin: Improved handling of half configured sites
#5658 GUI: Fixed possible "TypeError" on "Agent update status" view
#5632 GUI: Fixed XSS when rendering values of dropdown choices
#5654 GUI: Fixed XSS on the site management page
#5623 HW/SW-Inventory: lnx_if: Do not ignore interface any more if no speed information is available
#5491 Notifications: Show failed host notifications in tactival overview
#5656 Reporting & Availability: Report edit: Add validation that reports can not use layouts from itself
#5652 WATO: Fixed escaped underline HTML tag in help texts
#5657 WATO: Custom user attributes that are not editable by the user can now edited by the admin
#5648 omd: omd stop/start: Add new option to execute site actions simultaneously
Version 1.4.0p23
#5268 Agent Bakery: cmk-update-agent: Improve exception handling
#5598 Checks & Agents: postfix_mailq_status: Fix Linux agent to handle newer SuSE systems
#5608 Checks & Agents: temperature.include: Fixed device levels handling
#5599 Checks & Agents: check_dns: Return to the behaviour prior to Werk #5526
#5582 Checks & Agents: hr_cpu: Fixed displaying of "per core CPU utilization" in raw edition graphs
#5550 Checks & Agents: mk_oracle.ps1: Fixed exceptions because of useless backslashes
#5485 Checks & Agents: alcatel_power: improved detection of power supplies on newer devices
#5484 Checks & Agents: logwatch.ec: Fix exception when reclassify patterns are specified
#5551 Checks & Agents: check_mk_agent.aix: Fixed crash in uptime if the output is day instead of days
#5594 GUI: Custom graphs: Fixed rendering titles of "sidebar hidden" custom graphs on graph list page
#5586 GUI: Raw edition: Fixed adding graphs to dashboards
#5585 GUI: Added missing icon "host is currently not being checked" to host views
#5584 HW/SW-Inventory: Fixed exception when "Export List of Software packages as CSV file" is enabled
#5552 Reporting & Availability: reporting: Fixed unreasonable high timeout for availability elements
Version 1.4.0p22
#5266 Agent Bakery: cmk-update-agent: Python 2.4 compatibility fix
#5527 Checks & Agents: ucd_mem hr_mem: Prefer ucd_mem check for certain Cisco IronPort models
#5456 Checks & Agents: mk_oracle mk_oracle.aix: Fixed excluding all sections for any SID which contains invalid characters in the related variable name
#5415 Checks & Agents: Make Windows section openhardwaremonitor backwards compatible
#5416 Checks & Agents: Prevent MS Exchange checks from crashing upon WMI timeout
#5452 GUI: Highly improved performance of rendering large tables of HW/SW inventory trees
#5473 cmc: Add correct host-related acknowledgement info to notifications.
#5471 cmc: Handle malformed SEND_CUSTOM_{HOST,SERVICE}_NOTIFICATION commands more gracefully.
#5472 cmc: Ensure correct quoting of values in event contexts.
Version 1.4.0p21
#5546 Agent Bakery: Count size and age of files (Linux Windows): Increased input fields of paths
#5265 Agent Bakery: cmk-update-agent: Enable Agent Updater to update itself on Windows
#5264 Agent Bakery: cmk-update-agent: Improve logging under windows
#5581 Agent Bakery: Fixed incompatibility when installing baked packages on systems with older python versions
#5479 Checks & Agents: fileinfo: handle globbing pattern expansion and whitespace in fileinfo.cfg
#5548 Checks & Agents: zpool_status: Fixed crash if pool has been deleted or vanished
#5526 Checks & Agents: check_dns: Do not pass off the host's IP address as a default DNS server address
#5521 Checks & Agents: logwatch: Fix exception in WATO's check parameter display
#5451 Checks & Agents: logwatch: Fixed reclassifying mechanism: Patterns did not apply correctly if they have changed
#5245 Checks & Agents: netapp_api_status: Now also considers the status "ok_with_suppressed" as OK
#5520 Checks & Agents: rstcli rstcli.pdisks: Fix broken parse function
#5413 Checks & Agents: Windows agent: nocontext tag did not work for multibyte encoded logfiles
#5251 Checks & Agents: Windows Agent: Improved handling of cmk-update-agent.exe plugin
#5549 Checks & Agents: mk_oracle.ps1: Fixed scattered information for configuration
#5246 Checks & Agents: cmk --list-hosts now supports the additional options --all-sites, --include-offline
#5411 Checks & Agents: Windows agent: handle WMI timeouts
#5412 Checks & Agents: Windows agent: fix logfile glob patterns without '*' at the end
#5414 Checks & Agents: Windows agent: Exchange Availability Service was broken
#5518 Checks & Agents: win.mem: Fix incorrect representation of absolute memory levels in graphs
#5534 Core & Setup: Fixed wrong host graph scaling when using DNS names as IPv4 address
#5469 Core & Setup: Fixed acknowledgement notifications when RBN is disabled
#5467 Core & Setup: Fixed interaction between periodic notifications and acknowledgements.
#5541 GUI: IE 11+: Fixed styling of select fields
#5570 GUI: Fixed disabling of availability row limit
#5530 GUI: Clicking on "Edit dashboard" accidentially copied dashboards with "publish to others"
#5529 GUI: Fixed accidentially cloning own visuals instead of builtin visuals
#5453 HW/SW-Inventory: HW/SW inventory: Changed output format of raw inventory tree
#5463 Livestatus: Report invalid table names via response header.
#5468 Livestatus: Fixed indexing with disjunctions.
#5466 Livestatus: Fixed filtering of services table for host name
#5464 Livestatus: Report invalid GET headers even when they appear before ResponseHeader.
#5540 Metrics System: "Graph time range" display option had no effect on Check_MK graphs
#5568 Reporting & Availability: Fixed breaking report elements when reloading edit page
#5249 WATO: Fixed tmpfs full issue: CME Activate Changes did not cleanup all temporary files
#5545 WATO: Editing rules: Fixed adding date+user to rule comments
#5547 WATO: Errors in pre-activate-changes hooks prevent configuration activation now (regression since 1.2.8)
#5250 WATO: Fixed tmpfs full issue: Activate Changes did not cleanup all temporary files
#5558 WATO: Rule list: Fixed visibility of rules in child folders for transitive folders
Version 1.4.0p20 (Not yet released)
Friday, 01.12.2017
#7515 packages: diskspace cleanup: No longer deletes agent updater registration files of hosts monitored in foreign sites
#5561 distros: Add build support for SLES12SP3
Thursday, 30.11.2017
#5560 GUI: Fixed "Events of Monitored Host" showing events of unrelated hosts
Friday, 17.11.2017
#5528 omd: Fixed showing help when executing "omd" without mode argument (1.4.0p18 regression)
Version 1.4.0p19
#5263 Agent Bakery: Improve compatibility of baked agents regarding xinetd installation
#5262 Agent Bakery: Fix bug in agent bakery (regression #5261, since 1.4.0p17)
#5445 Checks & Agents: apc_symmetra_output: Fixed exception 'could not convert string to float' during discovery
#5478 Checks & Agents: fileinfo: fix globbing pattern expansion
#5443 Checks & Agents: cisco_redundancy: Discover 'Redundancy Framework Status' service if device supports that.
#5410 Checks & Agents: Windows agent: handle section Skype correctly
#5227 Checks & Agents: Checkgroup humidity: Fix swapped lower levels and definition of only one kind of levels
#5444 Core & Setup: SNMP commands: Prevent zombie processes in case of timeouts
#5244 WATO: Activate Changes: Fixed "Has never been activated" status message
Version 1.4.0p18
#5435 omd: Fixed "omd update" problems when updating from 1.4.0p17 or older
Version 1.4.0p17
#5261 Agent Bakery: Improve agent bakery robustness when baking new agents
#5427 BI: Fixed different XSS issues triggerd from BI aggregation/rule titles/descriptions
#5353 Checks & Agents: citrix_sessions: fixes a case where no session number was returned
#5354 Checks & Agents: cmctc_lcp: Fixes an error leading to wrong inventory and check output
#5441 Checks & Agents: mk_oracle: Werk 5321 introduced usage of nawk for SunOS but was implemented incorrectly for Linux
#5409 Checks & Agents: Windows eventlog: wrong last state saved
#5240 Checks & Agents: agent_netapp, environmental sensors monitoring. No longer fails if a node has no configured shelfes
#5241 Checks & Agents: netapp_api_connection: removed some invalid warning messages, which appear on virtual netapp systems
#5429 Event Console: Fixed broken event history expiration (when using default settings)
#5426 GUI: df perfometer: Fixed exception when maximum value is not available
#5434 GUI: Views: Fixed exception when trying to display downtime IDs in views
#5425 GUI: Fixed broken bookmark list management for users with non ascii characters in User IDs
#5431 GUI: Fixed possible reflected XSS using custom bookmarks
#5424 GUI: Fixed possible exception during logout when having cookies with invalid format for other sites
#5242 GUI: Fixed display bug "Customer not found", shown in slave sites
#5196 Livestatus: Bumped Livestatus stack size to give regex matching more breathing room.
#5197 Livestatus: Improved Event Console history performance
#5430 Metrics System: Pause page reloads when selecting timerange by using the graph previews
#5423 WATO: Fixed exception on "Catalog of check plugins page"
#5239 WATO: Managed Services Edition: Improved activate changes performance
#5422 omd: Add build support for Ubuntu 17.10 (artful)
#5209 packages: Python: Updated to 2.7.14
Version 1.4.0p16
#5318 BI: BI aggregations can be configured to be in multiple groups
#5347 Checks & Agents: agent_ucs_bladecenter: add option to disable certificate validation
#5344 Checks & Agents: fileinfo: correct handling of file names with spaces in fileinfo.cfg
#5349 Checks & Agents: ovs_bonding: display bonding correctly for newer ovs-appctl versions
#5394 Checks & Agents: agent_ucs_bladecenter: Fixed broken agent since 1.4.0p14 (#5233)
#5439 Checks & Agents: storcli_vdrives: Configured check state of related device state was not set properly in some cases. Made that more robust.
#5408 Checks & Agents: Windows perf counter base number formatting was broken
#5324 Checks & Agents: check_tcp: Made response time metric readable
#5348 Checks & Agents: veritas_vcs: add timeout in the Check_MK agent
#5321 Checks & Agents: mk_oracle: Fixed usage of awk command in case of SunOS which causes 'record ... too long' error
#5301 Checks & Agents: infoblox_dhcp_stats: Fixed crash of graphs
#5303 Checks & Agents: local: Fixed missing warn/crit in graphs if upper and lower thresholds are in perfdata
#5307 Checks & Agents: windows_updates: Added information about default cache age and asynchronious execution
#5260 Metrics System: Fix presentation of mirrored areas
#5236 WATO: Edit host/service/contactgroups: Fixed exception in CME, improved audit logging
#5421 WATO: LDAP: Fixed broken sync of group memberships for users with capital umlauts in names
#5404 WATO: Changing "Agent encryption" ruleset now marks bakery as dirty
#5398 WATO: Agent bakery: Hide "Bake Agents" context button when not permitted to bake
#5392 WATO: Fixed host monitored from all sites after editing custom host attributes
#5401 WATO: Fixed password auto completion prevention for current Chrome versions
#5399 WATO: Fixed multiple stored XSS injections in WATO dialogs
#5235 WATO: Distributed monitoring: Fixed race condition when unpacking snapshots
#5420 omd: diskspace cleanup: Fixed exception when "Delete additional files when disk space is below" is enabled
Version 1.4.0p15
#5317 BI: BI rules: Fixed renaming rule
#5234 Checks & Agents: Fixed recently introduced issue with non working WATO rules
#5379 Checks & Agents: Allow Windows logfiles to be monitored without monitoring also eventlog
#5389 WATO: Fixed disabling services via discovery page when a host rule exists in wrong folder
#5362 WATO: Fixed possible exception on global settings page related to "diskspace cleanup"
#5391 WATO: Removed CEE specific broken link from host edit page (CRE)
#5388 packages: Dokuwiki: Fixed missing page edit dialog toolbar when using SLES
Version 1.4.0p14
#5315 Agent Bakery: win_printers: Added missing bakery rule
#5211 Agent Bakery: Agent bakery: Reduced agent baking time when monitoring 0 hosts from central site
#5316 Checks & Agents: cmciii.access: Fixed error state handling
#5312 Checks & Agents: citrix_sessions: Fixed crash if not all session values 'total', 'active' or 'inactive' are available
#5339 Checks & Agents: postfix_mailq_status: Now reports if PID file is not readable
#5378 Checks & Agents: Windows agent: Ensure backwards compatibility of section webservices
#5233 Checks & Agents: agent_ucs_bladecenter: Now uses python requests to fetch the data
#5232 Checks & Agents: Agent version check: fixed exception when an offcial release is expected and the agents version is a daily build
#5361 Event Console: Fixed cancelling events by "text" (regression #5057, since 1.4.0p11)
#5212 Event Console: check_mkevents: Improved performance
#5214 GUI: Events in tactical overview can now be disabled
#5215 GUI: Fixed broken nested contact group synchronization (regression in 1.4.0p10)
#5216 GUI: Failed notification checking is now limited to 7 days
#5210 GUI: LDAP: Fixed equal default value for custom variable sync plugins
#5359 Reporting & Availability: Reduced size of PDF exports containing graphs
#5231 WATO: Distributed WATO: Improved site snapshot generation speed, reduces "Activate changes" duration
#5217 WATO: BI: Improved error handling in case of not existing but referenced rule
#5313 WATO: Service discovery: Fixed 'Fix all missing/vanished' action: Disabled services were listed below 'Monitored services' after that button click.
Version 1.4.0p13
#5259 Agent Bakery: cmk-update-agent: Improving robustness in curl handling
#5281 Checks & Agents: apache_status: Fixed ignoring invalid lines
#5280 Checks & Agents: rds_licenss: Fixed missing includes
#5282 Checks & Agents: hpux_tunables: Fixed discovering kernel tunables on HPUX 11.23
#5283 Checks & Agents: megaraid_ldisks: Fixed error during discovery: UnboundLocalError: local variable 'item' referenced before assignment
#5311 Checks & Agents: oracle_performance: Making sure that we use float instead of integer for correct calculations
#5287 Checks & Agents: postfix_mailq: Fixed parameter handling
#5284 Checks & Agents: akcp_exp_humidity akcp_sensor_humidity allnet_ip_sensoric apc_humidity etherbox humidity.include knuerr_rms_humidity stulz_humidity tinkerforge: Fixed wrong parameters
#5279 Checks & Agents: qnap_disks: Just discover slots that are not empty
#5278 Checks & Agents: check_mk_agent.linux: Fixed wrong detected sensors in state "State disasserted"
#5034 Checks & Agents: Do not skip first entry in Windows eventlog
#5016 Checks & Agents: hp_proliant_temp: Fixed crash if thresholds are set manually
#5221 Checks & Agents: esx_vsphere_hostsystem.cpu_usage esx_vsphere_hostsystem.cpu_util_cluster: Fix min/max values in perfdata
#5222 Checks & Agents: mrpe: Fix compatibility of bakery ruleset when updating from 1.2.8*
#5230 Checks & Agents: logwatch/logwatch.ec: fixed "no forwarding" option in rule "Logwatch Event Console Forwarding"
#3919 Reporting & Availability: PDF: Improved handling of long words in text wrapping
#5229 WATO: Rename host: fixed exception when having more than 1024 users configured
#5295 WATO: Service discovery: Fixed permission handling regarding foreign changes if user just performs a service discovery
Version 1.4.0p12
#5258 Agent Bakery: cmk-update-agent: Fix invalid signature error
#5137 Agent Bakery: Fix error when spaces are present in custom agent files
#5125 Checks & Agents: brocade_mlx_power: Fixed wrong index usage which leads to undetected power supplies
#5121 Checks & Agents: check_sql: Added error message if cx_Oracle module is not installed
#5218 Checks & Agents: jolokia_metrics: Fix failing parse function for MBeans containing ":"
#5120 Checks & Agents: ps ps.perf: Fixed regex range introduced with werk 5114 which allows "/" in process name in manual checks
#5014 Checks & Agents: df: Fixed error if dynamic levels should be set
#5205 Core & Setup: Host rename: Fixed broken renaming when new name uses dots
#5204 Core & Setup: Host rename: Fixed broken rename of hosts in rrdcached journal
#5189 Core & Setup: Fixed scheduling of checks after a start/reload of the Micro Core
#5203 GUI: Removed sorting of perfometers
#5228 WATO: WATO Web-API: now able to edit users which were created through the GUI
#5122 WATO: Service discovery: Find SNMP checks of not yet monitored type when using cached data
#5123 WATO: Service discovery: Fix moving services from 'Disabled services' to 'Vanished services' or 'Undecided services'
#5206 WATO: Ruleset quick search now excludes deprecated rulesets
#5126 WATO: Service discovery dialog: Fixed moving services to "Disabled services" for remote sites
#5124 WATO: Service discovery: Fixed permission if user is not allowed to manage services
#5207 WATO: Bulk discovery: Fixed "Maximum number of retries reached" error during bulk discovery
Version 1.4.0p11
#5184 Agent Bakery: Bake agents on restart only affects master sites now
#4565 Agent Bakery: Improving curl and python compatibility of cmk-update-agent
#5142 BI: BI aggregation: Increased compilation performance for large aggregations
#4860 Checks & Agents: mailman_lists: fixed path of python modules for some operating systems
#5199 Checks & Agents: winperf_if: DHCP was always shown as enabled
#5201 Checks & Agents: check_mkevents: Removed deprecated "less verbose output" option
#5055 Checks & Agents: quantum_libsmall_door: Fixed exception in scan function when . is not available
#5054 Core & Setup: SNMPv3 contextes were not always used during discovery
#5027 Core & Setup: Made communication with alert helper more robust.
#5057 Event Console: Fixed cancelling events by "syslog application" when using similar rules
#5169 GUI: LDAP: Fixed syncing contact groups / roles of users with special characters in their name
#5182 GUI: Fixed error "program_version" in master control snapin when disabling a site
#5056 GUI: WATO: Wrong list of groups shown on user edit page when syncing groups via LDAP
#5200 GUI: Removed CEE specific link to Reports from Bookmark list pages
#5198 GUI: Delete contact groups: Fixed error message when users have no alias
#5185 HW/SW-Inventory: Check_MK HW/SW Inventory: The service was executed too often by default
#5202 Reporting & Availability: Fixed timeouts when generating reports (regression in #4957)
#5168 WATO: Fixed highlighting of rules when searching for ineffective rules
#5139 WATO: Fixed baked agent download page when user had no global bakery permissions
#5140 WATO: WATO Web API: add_users/edit_users: now able to set password attribute
#5141 WATO: WATO Web API: Introducing parameter request_format
#5030 WATO: Skype section can now be enabled/disabled in agent bakery
#5183 packages: Updated shipped navicli to

You can find a list of all werks including older versions here.