Problem Description :

Windows Update on Windows 7 SP1 and Windows Server 2008 R2 can continuously run in a loop without failing or ending. Following error codes can be logged inside the WindowsUpdate.log . 0x8024000B , 8024D011 , 0x800B0001 .

Error Message :

Following error messages can be logged in C:\Windows\WindowsUpdate.log .

2016-05-11 21:45:32:274 960 e6c Setup WARNING: Trust verification failed for WuSetupV.exe. It will be deleted and downloaded, error = 0x800B0001
2016-05-11 22:33:36:532 988 edc AU # WARNING: Failed to find updates with error code 8024D011
2016-05-11 22:33:57:920 988 ec4 Agent WARNING: WU client failed Searching for update with error 0x8024001b
2016-05-11 22:33:57:920 988 edc AU # WARNING: Failed to find updates with error code 8024001B
2016-05-15 14:51:52:062 980 7a8 Agent * WARNING: Failed to filter search results, error = 0x8024000B

2016-05-11 20:31:58:851 924 7d4 AU # WARNING: Failed to find updates with error code 8024001F
2016-05-11 20:43:03:656 892 a78 Agent WARNING: WU client failed Searching for update with error 0x8024001b
2016-05-11 20:43:12:860 1564 870 Setup WARNING: CBS installation failed, error = 0x800F0806
2016-05-11 20:43:12:860 1564 870 Setup WARNING: Install of setup package "WUClient-SelfUpdate-Aux-TopLevel~31bf3856ad364e35~amd64~~7.6.7600.256" failed, error = 0x8024D00E
2016-05-11 20:43:12:860 1564 870 Setup FATAL: Failed to install package, error = 0x8024D00E
2016-05-11 20:43:12:860 1564 870 Setup WARNING: Installing applicable setup packages failed, error = 0x8024D00E
2016-05-11 20:57:08:881 2848 994 COMAPI - Download call complete (succeeded = 1, succeeded with errors = 0, failed = 0, unaccounted = 0)
2016-05-11 20:57:08:881 892 2d4 Agent WARNING: failed to calculate prior restore point time with error 0x80070002; setting restore point
2016-05-11 20:57:21:423 2848 b58 COMAPI - Install call complete (succeeded = 1, succeeded with errors = 0, failed = 0, unaccounted = 0)
2016-05-11 20:58:25:773 892 a78 Handler CBS called Error with 0x800f0816,
2016-05-11 20:58:31:529 892 bcc Handler CBS called Error with 0x800f0816,
2016-05-11 20:58:35:055 892 624 Handler CBS called Error with 0x800f0816,
2016-05-11 21:00:42:447 892 898 Handler CBS called Error with 0x800f0816,
2016-05-11 21:00:47:876 892 624 Handler CBS called Error with 0x800f0816,
2016-05-11 21:02:35:159 2052 458 Handler Completed install of CBS update with type=1, requiresReboot=0, installerError=0, hr=0x0
2016-05-11 21:04:15:290 2052 458 Handler Completed install of CBS update with type=3, requiresReboot=1, installerError=0, hr=0x0
2016-05-11 21:04:15:961 2052 458 Handler Completed install of CBS update with type=3, requiresReboot=1, installerError=0, hr=0x0
2016-05-11 21:04:16:694 2052 458 Handler Completed install of CBS update with type=3, requiresReboot=1, installerError=0, hr=0x0
2016-05-11 21:04:17:989 2052 458 Handler Completed install of CBS update with type=3, requiresReboot=1, installerError=0, hr=0x0
2016-05-11 21:05:10:592 2052 458 Handler Completed install of CBS update with type=3, requiresReboot=1, installerError=0, hr=0x0
2016-05-11 21:05:11:762 2052 458 Handler Completed install of CBS update with type=3, requiresReboot=1, installerError=0, hr=0x0
2016-05-11 21:05:13:072 892 55c AU # WARNING: Install call completed, reboot required = Yes, error = 0x00000000
2016-05-11 21:05:14:508 892 e28 AU WARNING: Returning due to error from GetDownloadProgressUx, error = 0x8024000C
2016-05-11 21:05:14:508 892 e28 AU WARNING: GetInteractiveInstallProgress failed, error = 0x8024000C
2016-05-11 21:12:34:110 948 760 AU WARNING: GetPostRebootResults failed, error = 0x80070005
2016-05-11 21:12:45:670 3924 f64 Handler Completed install of CBS update with type=3, requiresReboot=1, installerError=0, hr=0x0
2016-05-11 21:13:40:613 948 e1c AU # WARNING: Install call completed, reboot required = Yes, error = 0x00000000
2016-05-11 21:15:37:373 960 b28 AU WARNING: GetPostRebootResults failed, error = 0x80070005
2016-05-11 21:16:17:998 960 604 Handler CBS called Error with 0x800f0816,
2016-05-11 21:16:22:569 960 61c Handler CBS called Error with 0x800f0816,
2016-05-11 21:16:24:581 960 61c Handler CBS called Error with 0x800f0816,
2016-05-11 21:16:25:782 960 61c Handler CBS called Error with 0x800f0816,
2016-05-11 21:16:29:152 960 2e8 Handler CBS called Error with 0x800f0816,
2016-05-11 21:16:34:019 960 2e8 Handler CBS called Error with 0x800f0816,
2016-05-11 21:16:35:641 960 3d8 Handler CBS called Error with 0x800f0816,
2016-05-11 21:16:41:335 960 604 Handler CBS called Error with 0x800f0816,
2016-05-11 21:16:56:577 3764 ec4 Handler Completed install of CBS update with type=3, requiresReboot=1, installerError=0, hr=0x0
2016-05-11 21:17:00:851 3764 ec4 Handler Completed install of CBS update with type=3, requiresReboot=1, installerError=0, hr=0x0
2016-05-11 21:17:04:704 3764 ec4 Handler Completed install of CBS update with type=3, requiresReboot=1, installerError=0, hr=0x0
2016-05-11 21:17:10:585 3764 ec4 Handler Completed install of CBS update with type=3, requiresReboot=1, installerError=0, hr=0x0
2016-05-11 21:17:15:609 3764 ec4 Handler Completed install of CBS update with type=3, requiresReboot=1, installerError=0, hr=0x0
2016-05-11 21:17:20:289 3764 ec4 Handler Completed install of CBS update with type=3, requiresReboot=1, installerError=0, hr=0x0
2016-05-11 21:17:30:585 3764 ec4 Handler Completed install of CBS update with type=3, requiresReboot=1, installerError=0, hr=0x0
2016-05-11 21:17:44:079 3764 ec4 Handler Completed install of CBS update with type=3, requiresReboot=1, installerError=0, hr=0x0
2016-05-11 21:17:55:950 3764 ec4 Handler Completed install of CBS update with type=3, requiresReboot=1, installerError=0, hr=0x0
2016-05-11 21:18:10:460 3764 ec4 Handler Completed install of CBS update with type=3, requiresReboot=1, installerError=0, hr=0x0
2016-05-11 21:18:25:031 3764 ec4 Handler Completed install of CBS update with type=3, requiresReboot=1, installerError=0, hr=0x0
2016-05-11 21:18:29:383 960 70c AU # WARNING: Install call completed, reboot required = Yes, error = 0x00000000
2016-05-11 21:18:45:240 960 904 Agent WARNING: WU client failed Searching for update with error 0x8024000b
2016-05-11 21:19:46:705 956 804 AU WARNING: GetPostRebootResults failed, error = 0x80070005
2016-05-11 21:31:15:900 948 3c8 Handler CBS called Error with 0x800f0816,
2016-05-11 21:31:21:547 948 f74 Handler CBS called Error with 0x800f0816,
2016-05-11 21:31:24:520 948 f98 Handler CBS called Error with 0x800f0816,
2016-05-11 21:31:30:089 948 f74 Handler CBS called Error with 0x800f0816,
2016-05-11 21:31:32:569 948 f98 Handler CBS called Error with 0x800f0816,
2016-05-11 21:31:35:034 948 e4c Handler CBS called Error with 0x800f0816,
2016-05-11 21:31:37:686 948 3c8 Handler CBS called Error with 0x800f0816,
2016-05-11 21:31:39:714 948 e4c Handler CBS called Error with 0x800f0816,
2016-05-11 21:31:44:316 948 3cc Handler CBS called Error with 0x800f0816,
2016-05-11 21:31:51:211 948 3d0 Handler CBS called Error with 0x800f0816,
2016-05-11 21:31:54:097 948 3cc Handler CBS called Error with 0x800f0816,
2016-05-11 21:31:59:323 948 f98 Handler CBS called Error with 0x800f0816,
2016-05-11 21:32:01:694 948 e4c Handler CBS called Error with 0x800f0816,
2016-05-11 21:35:54:313 288 fb8 Handler Completed install of CBS update with type=1, requiresReboot=0, installerError=0, hr=0x0
2016-05-11 21:35:55:405 288 fb8 Handler Completed install of CBS update with type=3, requiresReboot=1, installerError=0, hr=0x0
2016-05-11 21:35:57:090 288 fb8 Handler Completed install of CBS update with type=3, requiresReboot=1, installerError=0, hr=0x0
2016-05-11 21:35:59:805 288 fb8 Handler Completed install of CBS update with type=3, requiresReboot=1, installerError=0, hr=0x0
2016-05-11 21:36:01:240 288 fb8 Handler Completed install of CBS update with type=3, requiresReboot=1, installerError=0, hr=0x0
2016-05-11 21:36:02:503 288 fb8 Handler Completed install of CBS update with type=3, requiresReboot=1, installerError=0, hr=0x0
2016-05-11 21:36:04:251 288 fb8 Handler Completed install of CBS update with type=3, requiresReboot=1, installerError=0, hr=0x0
2016-05-11 21:36:05:717 288 fb8 Handler Completed install of CBS update with type=3, requiresReboot=1, installerError=0, hr=0x0
2016-05-11 21:36:08:821 288 fb8 Handler Completed install of CBS update with type=3, requiresReboot=1, installerError=0, hr=0x0
2016-05-11 21:36:11:489 288 fb8 Handler Completed install of CBS update with type=3, requiresReboot=1, installerError=0, hr=0x0
2016-05-11 21:36:15:436 288 fb8 Handler Completed install of CBS update with type=3, requiresReboot=1, installerError=0, hr=0x0
2016-05-11 21:36:17:963 288 fb8 Handler Completed install of CBS update with type=3, requiresReboot=1, installerError=0, hr=0x0
2016-05-11 21:36:22:799 288 fb8 Handler Completed install of CBS update with type=3, requiresReboot=1, installerError=0, hr=0x0
2016-05-11 21:36:25:514 288 fb8 Handler Completed install of CBS update with type=3, requiresReboot=1, installerError=0, hr=0x0
2016-05-11 21:36:25:529 948 72c AU # WARNING: Install call completed, reboot required = Yes, error = 0x00000000
2016-05-11 21:36:33:696 948 2ac Agent WARNING: WU client failed Searching for update with error 0x8024000b
2016-05-11 21:38:29:442 960 634 AU WARNING: GetPostRebootResults failed, error = 0x80070005
2016-05-11 21:45:32:274 960 e6c Misc WARNING: Digital Signatures on file C:\Windows\SoftwareDistribution\SelfUpdate\Handler\WuSetupV.exe are not trusted: Error 0x800b0001
2016-05-11 21:45:32:274 960 e6c Setup WARNING: Trust verification failed for WuSetupV.exe. It will be deleted and downloaded, error = 0x800B0001
2016-05-11 21:50:41:335 960 f04 Handler CBS called Error with 0x800f0816,
2016-05-11 21:59:49:022 2100 62c Handler Completed install of CBS update with type=3, requiresReboot=1, installerError=0, hr=0x0
2016-05-11 22:08:10:375 960 3b4 AU # WARNING: Install call completed, reboot required = Yes, error = 0x00000000
2016-05-11 22:24:36:173 936 8c8 Agent WARNING: WU client failed Searching for update with error 0x8024000b
2016-05-11 22:33:36:532 988 ec4 Agent WARNING: WU client failed Searching for update with error 0x8024d011
2016-05-11 22:33:36:532 988 edc AU # WARNING: Failed to find updates with error code 8024D011
2016-05-11 22:33:57:920 988 ec4 Agent WARNING: WU client failed Searching for update with error 0x8024001b
2016-05-11 22:33:57:920 988 edc AU # WARNING: Failed to find updates with error code 8024001B
2016-05-11 22:34:07:545 3060 9f8 Setup WARNING: CBS installation failed, error = 0x800F0806
2016-05-11 22:34:07:545 3060 9f8 Setup WARNING: Install of setup package "WUClient-SelfUpdate-Aux-TopLevel~31bf3856ad364e35~amd64~~7.6.7600.320" failed, error = 0x8024D00E
2016-05-11 22:34:07:545 3060 9f8 Setup FATAL: Failed to install package, error = 0x8024D00E
2016-05-11 22:34:07:545 3060 9f8 Setup WARNING: Installing applicable setup packages failed, error = 0x8024D00E
2016-05-11 22:34:07:686 988 a5c Service WARNING: Failed to read back selfupdate handle from environment variable with error 0x800700cb
2016-05-11 22:39:09:211 988 f10 Agent WARNING: WU client failed Searching for update with error 0x8024000b
2016-05-11 23:28:58:656 968 b68 Agent * WARNING: Failed to filter search results, error = 0x8024000B
2016-05-11 23:28:58:719 292 bd0 COMAPI WARNING: Operation failed due to earlier error, hr=8024001E
2016-05-11 23:34:01:247 912 cdc Agent * WARNING: Failed to filter search results, error = 0x8024000B
2016-05-12 09:34:42:572 968 d78 Agent * WARNING: Failed to filter search results, error = 0x8024000B
2016-05-12 10:27:32:119 996 c88 Agent * WARNING: Failed to filter search results, error = 0x8024000B
2016-05-12 10:27:33:741 996 c88 Agent WARNING: WU client failed Searching for update with error 0x8024000b
2016-05-12 10:27:33:741 996 f80 Agent WARNING: WU client fails to call back to search call {A14EFC1D-2E1F-488B-8397-F1885C5D11A8} with error 0x800706ba
2016-05-15 14:11:12:356 980 f1c Agent * WARNING: Failed to filter search results, error = 0x8024000B
2016-05-15 14:11:26:061 980 c54 Agent WARNING: WU client failed Searching for update with error 0x8024000b
2016-05-15 14:43:15:511 980 d6c Agent * WARNING: Failed to filter search results, error = 0x8024000B
2016-05-15 14:45:10:361 980 6a4 Agent * WARNING: Failed to filter search results, error = 0x8024000B
2016-05-15 14:51:52:062 980 7a8 Agent * WARNING: Failed to filter search results, error = 0x8024000B

Solution :

This problem basically occurs because of a BUG inside Windows Update Agent. The mentioned below Hotfix KB3138612 resolved our problem in this case. Please be aware that the Hotfix requires a restart of your Server or PC to take affect. Once the PC or Server is restarted check again for windows updates.

Windows Update Client for Windows 7 and Windows Server 2008 R2: March 2016
https://support.microsoft.com/en-us/kb/3138612

If you want to further speed up Windows 7 Update after KB3138612 installation, please read the article below .

How to further speed up Windows 7 Update after KB3138612 Installation
http://www.kuskaya.info/2016/11/14/how-to-further-speed-up-windows-7-update-after-kb3138612-installation

Additional Useful Articles :

How to troubleshoot Windows 7 SP1 Update stuck at “Checking for updates …” .
http://www.kuskaya.info/2016/08/21/how-to-troubleshoot-windows-7-sp1-update-stuck-at-checking-for-updates/

Printers can disappear in (PMC) Print Management Console on Windows 8.1 or Windows Server 2012 R2 after May, June, July, August 2016 Updates
http://www.kuskaya.info/2016/08/26/printers-can-disappear-in-pmc-print-management-console-on-windows-8-1-or-windows-server-2012-r2-after-may-june-july-august-2016-updates/

Good luck !