InSite shows the error: “The requested operation cannot be performed on a file with a user-mapped section open.”

Question: When running InSite I get an unexpected error that says “System.IO.IOException: The requested operation cannot be performed on a file with a user-mapped section open.”. What does this mean and how can I prevent it?

Answer: This error is caused by some anti-virus products. When InSite crawls your website it stores some information in temporary files on your hard drive. Some anti-virus products block access to these files while they are scanned, preventing InSite from reading them and causing this error message.

If you’re experiencing this problem please contact technical support for work-around instructions.