How to fix 'Microsoft Excel cannot open or save any more documents'

Question

I am running C# ASP.NET 4.5 web application on Windows 7 64-bit using IIS 7.5. The application pool it uses has the name \'ASP.NET v4.0\' and its identity is ApplicationPool

Answer 1

Test like this.Sometimes, permission problem.

cmd => dcomcnfg

Click

Component services >Computes >My Computer>Dcom config> and select micro soft Excel Application

Right Click on microsoft Excel Application

Properties>Give Asp.net Permissions

Select Identity table >Select interactive user >select ok