OpenXml and Unable to create mutex

Question

I tried to create Excel document through openXml lib, but when i wanna create Excel from large number of data, server shoe me Unable to create mutex. (Exception from

Answer 1

I agree with @Behrooz, change the the ApplicationPool's Identity to LocalSystem and it will work.

I didn't have this problem when the project was running on my PC's local host, but I did when I deployed it to the Server..

See this screenshot: