Hello,
We are facing an issue with BigFix where some targeted servers are restarting immediately after installing updates and other servers not, even though the restart has already been scheduled for 8 hours later within Post Action. Unfortunately, this behavior is causing unexpected downtime during working hours.
Here are the logs and screenshots related to this incident:
At 15:43:43 +0300 - mailboxsite (http://LIFECYCLE.scb.local:52311/cgi-bin/bfgather.exe/mailboxsite1074185216)
Downloaded âhttp://SCCM.scb.local:52311/mailbox/files/18/19/181925c49a2c3f392c59648f627ef0d961c3a18fâ as âAction 63183.fxfâ
At 15:43:44 +0300 - mailboxsite (http://LIFECYCLE.scb.local:52311/cgi-bin/bfgather.exe/mailboxsite1074185216)
Gather::SyncSiteByFile adding files - count: 1
At 15:43:44 +0300 -
Successful Synchronization with site âmailboxsiteâ (version 195) - âhttp://LIFECYCLE.scb.local:52311/cgi-bin/bfgather.exe/mailboxsite1074185216â
Processing action site.
At 15:43:57 +0300 - mailboxsite (http://LIFECYCLE.scb.local:52311/cgi-bin/bfgather.exe/mailboxsite1074185216)
Relevant - MS25-SEP: Cumulative Update for Windows Server 2016 - Windows Server 2016 - KB5065427 (x64) (fixlet:63183)
At 15:46:04 +0300 -
Encrypted Report posted successfully
At 15:46:30 +0300 -
DownloadPing command received (ID=63183)
At 15:46:32 +0300 -
ActionLogMessage: (action:63183) Action signature verified for Downloads
DownloadsAvailable: checking for âhttp://SCCM.scb.local:52311/bfmirror/downloads/63183/0â
DownloadsAvailable: true (action id 63183)
ActionLogMessage: (action:63183) Non-Distributed - DownloadsAvailable
ActionLogMessage: (action:63183) Submitting download request
ActionLogMessage: (action:63183) Download url: âhttps://catalog.s.download.windowsupdate.com/d/msdownload/update/software/secu/2025/09/windows10.0-kb5065427-x64_b341c6fc803e28fc7257524e5f5de44551766bcf.msuâ
ActionLogMessage: (action:63183) Download url: âhttps://catalog.s.download.windowsupdate.com/d/msdownload/update/software/secu/2025/09/windows10.0-kb5065687-x64_3719efc71da546d91481f446ac57939a4b288a8b.msuâ
At 15:57:45 +0300 -
ActionLogMessage: (action:63183) Action signature verified for Execution
ActionLogMessage: (action:63183) starting action
At 15:57:46 +0300 - BigFix Inventory Discovery (http://sync.bigfix.com/cgi-bin/bfgather/bigfixinvdiscovery)
Downloaded âhttp://SCCM.scb.local:52311/bfmirror/bfsites/enterprisemirror_59_25/__fullsiteâ as â__TempUpdateFilenameâ
At 15:57:46 +0300 -
Successful Synchronization with site âBigFix Inventory Discoveryâ (version 25) - âhttp://sync.bigfix.com/cgi-bin/bfgather/bigfixinvdiscoveryâ
At 15:57:46 +0300 - actionsite (http://LIFECYCLE.scb.local:52311/cgi-bin/bfgather.exe/actionsite)
Command succeeded (Prefetch download manager collected file) prefetch windows10.0-kb5065427-x64_b341c6fc803e28fc7257524e5f5de44551766bcf.msu sha1:b341c6fc803e28fc7257524e5f5de44551766bcf size:1722980752 https://catalog.s.download.windowsupdate.com/d/msdownload/update/software/secu/2025/09/windows10.0-kb5065427-x64_b341c6fc803e28fc7257524e5f5de44551766bcf.msu sha256:a57a0bc707bb59e5d383ecdbded433cc86ca0d73f91b87c0de201ec7d290f329 (action:63183)
Command succeeded (Prefetch download manager collected file) prefetch windows10.0-kb5065687-x64_3719efc71da546d91481f446ac57939a4b288a8b.msu sha1:3719efc71da546d91481f446ac57939a4b288a8b size:12629561 https://catalog.s.download.windowsupdate.com/d/msdownload/update/software/secu/2025/09/windows10.0-kb5065687-x64_3719efc71da546d91481f446ac57939a4b288a8b.msu sha256:c679ac4d4b747688f9ecd83affe29ff0261dac4985122b03d26151d9ed91ccf9 (action:63183)
At 15:57:47 +0300 - actionsite (http://LIFECYCLE.scb.local:52311/cgi-bin/bfgather.exe/actionsite)
Command succeeded (evaluated true) continue if {exists running service âwuauservâ OR NOT exists service âwuauservâ whose (start type of it = âdisabledâ)} (action:63183)
Command started - waithidden âC:\Windows\system32\wusa.exeâ âC:\Program Files (x86)\BigFix Enterprise\BES Client__BESData\Enterprise Security__Download\windows10.0-kb5065687-x64_3719efc71da546d91481f446ac57939a4b288a8b.msuâ /Quiet /Norestart (action:63183)
At 15:58:49 +0300 -
Encrypted Report posted successfully
At 15:58:52 +0300 - actionsite (http://LIFECYCLE.scb.local:52311/cgi-bin/bfgather.exe/actionsite)
Command succeeded (Exit Code=0) waithidden âC:\Windows\system32\wusa.exeâ âC:\Program Files (x86)\BigFix Enterprise\BES Client__BESData\Enterprise Security__Download\windows10.0-kb5065687-x64_3719efc71da546d91481f446ac57939a4b288a8b.msuâ /Quiet /Norestart (action:63183)
Command succeeded (evaluated true) continue if {exists running service âwuauservâ OR NOT exists service âwuauservâ whose (start type of it = âdisabledâ)} (action:63183)
Command started - waithidden âC:\Windows\system32\wusa.exeâ âC:\Program Files (x86)\BigFix Enterprise\BES Client__BESData\Enterprise Security__Download\windows10.0-kb5065427-x64_b341c6fc803e28fc7257524e5f5de44551766bcf.msuâ /Quiet /Norestart (action:63183)
At 16:00:21 +0300 -
Encrypted Report posted successfully
At 17:15:44 +0300 - actionsite (http://LIFECYCLE.scb.local:52311/cgi-bin/bfgather.exe/actionsite)
Command succeeded (Exit Code=3010) waithidden âC:\Windows\system32\wusa.exeâ âC:\Program Files (x86)\BigFix Enterprise\BES Client__BESData\Enterprise Security__Download\windows10.0-kb5065427-x64_b341c6fc803e28fc7257524e5f5de44551766bcf.msuâ /Quiet /Norestart (action:63183)
Command succeeded action requires restart âb341c6fc803e28fc7257524e5f5de44551766bcfâ (action:63183)
At 17:15:51 +0300 - Enterprise Security (http://sync.bigfix.com/cgi-bin/bfgather/bessecurity)
Fixed - MS25-SEP: Cumulative Update for Windows Server 2016 - Windows Server 2016 - KB5065427 (x64) (fixlet:506542703)
At 17:15:51 +0300 -
ActionLogMessage: (action:63183) ending action
At 17:15:51 +0300 - mailboxsite (http://LIFECYCLE.scb.local:52311/cgi-bin/bfgather.exe/mailboxsite1074185216)
Not Relevant - MS25-SEP: Cumulative Update for Windows Server 2016 - Windows Server 2016 - KB5065427 (x64) (fixlet:63183)
At 17:16:14 +0300 -
Encrypted Report posted successfully
At 17:16:35 +0300 -
Encrypted Report posted successfully
At 17:16:38 +0300 -
BigFix Restart (Force count:1) from ActionID 63183
At 17:17:13 +0300 - BES Support (http://sync.bigfix.com/cgi-bin/bfgather/bessupport)
Relevant - Restart Needed - Triggered by a BES Action (fixlet:390)
Fixed - Restart Needed - Not Triggered by a BES Action (fixlet:391)
At 17:18:00 +0300 - Enterprise Security (http://sync.bigfix.com/cgi-bin/bfgather/bessecurity)
Fixed - MS25-SEP: Servicing Stack Update for Windows Server 2016 - Windows Server 2016 - KB5065687 (x64) (fixlet:506568705)
At 17:18:02 +0300 - Patching Support (http://sync.bigfix.com/cgi-bin/bfgather/patchingsupport)
Fixed - Task: Windows Update Service - Start the service (fixlet:12003)
Relevant - Task: Windows Update Service - Stop the service (fixlet:12004)
At 17:18:09 +0300 -
BigFix Restart (Force count:2) from ActionID 63183
At 17:21:29 +0300 -
Encrypted Report posted successfully
At 17:21:32 +0300 -
BigFix Restart (Force count:3) from ActionID 63183
At 17:26:20 +0300 -
Encrypted Report posted successfully
At 17:26:23 +0300 -
BigFix Restart (Force count:4) from ActionID 63183
At 17:27:07 +0300 - Patching Support (http://sync.bigfix.com/cgi-bin/bfgather/patchingsupport)
Relevant - Task: Windows Update Service - Start the service (fixlet:12003)
Fixed - Task: Windows Update Service - Stop the service (fixlet:12004)
At 17:28:28 +0300 -
DownloadPing command received (ID=63190)
At 17:30:02 +0300 -
DownloadPing command received (ID=63191)
At 17:30:37 +0300 -
Encrypted Report posted successfully
At 17:30:39 +0300 -
BigFix Restart (Force count:5) from ActionID 63183
DownloadPing command received (ID=63193)
At 17:30:40 +0300 -
Weâre trying to identify the root cause and provide a solution to prevent immediate restarts after updates.