Overview

The GFI MailEssentials configuration will not open and will give the following error:

Error: 'Server Error in / MailEssentials Application'

'Exception Details: System.Web.HttpException: The current identity (NT AUTHORITY\NETWORK SERVICE) does not have write access to 'C:\WINDOWS\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files'.'

Environment

• GFI MailEssentials
• All supported environments

Root Cause

This error appears when .NET Framework 4 is installed but not registered. GFI MailEssentials will not give any notifications or errors that .NET Framework 4 is not on the system during installation.

Resolution

Please follow the procedure below to register ASP.NET:

1. Open the command prompt.
2. Change directory as follows:
   1. By default, the path should be C:\Windows\Microsoft.NET\Framework\v4.0.30319.
   2. Run the command aspnet_regiis.exe -i and press Enter. This will register/install the .NET Framework 4.
3. The IIS will now have to be reset:
   1. Open the command prompt.
   2. Enter the command iisreset and press Enter.