Microsoft Office 365 update may fail if the download of update files to endpoint requires more time than the default Office timeout settings allow (usually because of network throttling or low network speed).
The following warning in the logs indicates that the download failure is caused by the download timeout:Failed to send HTTP response, error: An operation was attempted on a nonexistent network connection (0x000004CD)
The warning appears before the errors:
Office update installation failed
Please execute Click2Run tool manually using command line [C:\xxxxx] for troubleshooting
Workaround:
Modify the following registry value to change Office timeout parameter, for example, to 600000 milliseconds (10 minutes):
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Windows Registry Editor Version 5.00
[HKEY_USERS\.DEFAULT\Software\Microsoft\Office\16.0\Common\Internet]
"documentsynctimeout"=dword:000927C0
For more information about deploying Microsoft Office 365 updates with Patch Management Solution, see the Knowledge base article Deploying Microsoft Office 365 updates with Patch Management Solution