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"Cannot impersonate user for data source" - SSRS reports

We were getting this strange error while viewing our reports in SharePoint that was deployed using BIDS 2005:

An error has occurred during report processing. Cannot impersonate user for data source 'datasource' Logon failed

I tried many things but nothing worked. I did some research and found many blog posts which suggested me to reapply the password on the datasource file specified in the error message and save it again. That didn't work for me.



I saw some check boxes in the data source file that read "Use as Windows Credentials" and "Set Execution Context to this report" and I didn't know what they meant.

I unchecked those in my data source and then when the refreshed the page the report started displaying.
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Comments

Anonymous said…
Many many thanks....saved my days....
June 18, 2012 at 10:12 PM
Anonymous said…
Great....many thanks
June 18, 2012 at 10:13 PM
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