MailEnable Administrator console:Unable to load DLL 'MEAISO.DLL': The specified module could not be found. (Exception from HRESULT: 0x8007007E)

Symptoms

Unable to open MailEnable Administrator console, the following error appears:


CONFIG_TEXT: Unable to load DLL 'MEAIPO.DLL': The specified module could not be found. (Exception from HRESULT: 0x8007007E)
Unable to load DLL 'MEAISO.DLL': The specified module could not be found. (Exception from HRESULT: 0x8007007E)

Cause

Missing MailEnable related environment variable in PATH.

Resolution

It is required to add this variables to PATH. For that:

1. Log into the server via RDP.
2. Open Server Properties > Change Settings > Advanced System Settings > Environment Variables
3. Select PATH in System Variables > Edit
   
   
4. Add path to MailEnable binary directories there. For example, on Plesk Onyx that was not upgraded from previous versions, the following path should be added:

   PLESK_INFO: C:\Program Files (x86)\Plesk\Mail Servers\Mail Enable\Bin64;C:\Program Files (x86)\Plesk\Mail Servers\Mail Enable\Bin

5. Restart all related MailEnable services:
   

Note: path in step 4 may vary based on the upgrade history or installation specific. Adjust it accordingly.

Additional Information

MailEnable problem: Unable to load DLL 'MEAISO.DLL': The specified module could not be found. (Exception from HRESULT: 0x8007007E)"