You receive the following error message when upgrading to GFI MailEssentials:
Error 1306 Another application has exclusive access to avapicfg.mdb
Also Event id 1306 will be present in application event logs:
Error 1306. Another application has exclusive access to the file "avapicfg.mdb". Please shut down all other applications then click Retry.
- GFI MailEssentials
- All supported environments
- Go to Start > Run > type services.msc and hit Enter
- Right click Windows Management Instrumentation and click Stop
- Click Retry on the installation prompt and the installation will complete
The Microsoft Windows Management Instrumentation service is holding onto the avapicfg.mdb file, preventing the installation from continuing.