Error pruning sharepoint versions (HTTP-status 401)

[O_Schmidt]

Hi,

we use sharepoint archiving.
On some files, we got the following error:

"HTTP-STATUS 401: Unauthorized. Error pruning file version"

I don´t know what this failure means. When i try to access on of the affected files directly in sharepoint with the VSA, i can open the file and all works correct.
The files are all in the same site collection and most of the sharepoint documents works fine but some didn´t work.
The VSA is  site collection administrator and local administrator on all affected sharepoint server.

This is our environment:

EV 11.0.1 CHF 3
Sharepoint 2010

[O_Schmidt]

I´ve still have the problem. This is a log from the IIS webserver from the sharepoint server:

<failedRequest url="http://sharepoint-archiv-vprd:80/leben-archiv/_vti_bin/EVCustom.asmx?"
               siteId="1088514587"
               appPoolId="WebApp_Portal_Pool"
               processId="7056"
               verb="POST"
               authenticationType="NOT_AVAILABLE"               activityId="{800072AC-0000-F200-B63F-84710C7967BB}"
               failureReason="STATUS_CODE"
               statusCode="401.2"
               triggerStatusCode="401.2"
               timeTaken="0"
               xmlns:freb="http://schemas.microsoft.com/win/2006/06/iis/freb"
               >

I don´t know whats the problem is. Archiving works fine. Only file pruning isn´t working.

Does anyone have an idea what I could do yet?