Overview

When trying to access the Licensing node of the GFI MailEssentials configuration interface, the following error is returned:

Error in the application. An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
Exception Details: System.ApplicationException: Error in the application.

Information

Environment

• GFI MailEssentials
• All supported environments.

Root Cause

Earlier versions of GFI Network Server Monitor temporarily placed a copy of fmcmn_rc.dll in the system32 folder for installation purposes. If the installation process was interrupted and not completed successfully, this file would remain there. Since Microsoft Windows loads modules from the system32 folder first, GFI MailEssentials would load the old version of fmcmn_rc.dll first and fail with the error message mentioned above.

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Process

To resolve this issue, you will have to remove the old version of fmcmn_rc.dll from the system32 folder, as follows:

1. Browse to the C:\WINDOWS\system32\ folder.
2. Locate the file fmcmn_rc.dll and rename it to fmcmn_rc.dll.old.
3. Reboot the GFI MailEssentials machine.
4. Browse to the C:\WINDOWS\system32\ folder.
5. Locate and delete fmcmn_rc.dll.old.

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