David M. Sterling - Architect, Principal Consultant: SharePoint ULS Error UserAgent not available, file operations may not be optimized

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Wednesday, February 18, 2015

SharePoint ULS Error UserAgent not available, file operations may not be optimized

ULS Error (repeating) in SharePoint 2013 shows:

UserAgent not available, file operations may not be optimized

A quick shout out to Richard Leeman for the fix - it means that the Blob Cache has to be cleared. Using PowerShell:

$webApp = Get-SPWebApplication "http://<Site>:<Port if needed>"
[Microsoft.SharePoint.Publishing.PublishingCache]::FlushBlobCache($webApp)

3 comments:

Anonymous said...: This only works after doing an IISreset!; December 4, 2015 at 7:55 PM
Daniel van der Gryp said...: Thanks David; August 17, 2016 at 1:52 PM
Project_eRally said...: I had this same issue when clicking About Me to access my site.

I ran the flush on our http:// and ran iisreset on all our Web servers and this resolved the issue.

Many thanks, Ellya; October 26, 2016 at 6:22 AM

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