A snippet from CBS log which have an reference about the error
2015-08-13 11:42:40, Info CBS Starting TiWorker initialization.
2015-08-13 11:42:40, Info CBS Ending TiWorker initialization.
2015-08-13 11:42:40, Info CBS Starting the TiWorker main loop.
2015-08-13 11:42:40, Info CBS TiWorker starts successfully.
2015-08-13 11:42:40, Info CBS Universal Time is: 2015-08-13 06:12:40.533
2015-08-13 11:42:40, Info CBS Loaded Servicing Stack v6.3.9600.17709 with Core: C:\WINDOWS\winsxs\amd64_microsoft-windows-servicingstack_31bf3856ad364e35_6.3.9600.17709_none_fa7932f59afc2e40\cbscore.dll
2015-08-13 11:42:40, Info CSI 00000001@2015/8/13:06:12:40.705 WcpInitialize (wcp.dll version 0.0.0.6) called (stack @0x7ff962627f19 @0x7ff962964984 @0x7ff9629641bb @0x7ff6a84ed69a @0x7ff6a84edf4f @0x7ff9742e2053)
2015-08-13 11:42:40, Info CBS SQM: Initializing online with Windows opt-in: False
2015-08-13 11:42:40, Info CBS SQM: Cleaning up report files older than 10 days.
2015-08-13 11:42:40, Info CBS SQM: Requesting upload of all unsent reports.
2015-08-13 11:42:40, Info CBS SQM: Failed to start upload with file pattern: C:\WINDOWS\servicing\sqm\*_std.sqm, flags: 0x2 [HRESULT = 0x80004005 - E_FAIL]
2015-08-13 11:42:40, Info CBS SQM: Failed to start standard sample upload. [HRESULT = 0x80004005 - E_FAIL]
2015-08-13 11:42:40, Info CBS SQM: Queued 0 file(s) for upload with pattern: C:\WINDOWS\servicing\sqm\*_all.sqm, flags: 0x6
2015-08-13 11:42:40, Info CBS SQM: Warning: Failed to upload all unsent reports. [HRESULT = 0x80004005 - E_FAIL]
2015-08-13 11:42:40, Info CBS NonStart: Set pending store consistency check.