Another installation is already in progress. Complete that installation before proceeding with this install.

  • Article ID: 110520
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  • 7 customers rated this article 3.9 out of 6
  • Updated: 14 Feb 2013

Issue
When attempting to install Sophos Anti-Virus the following error is shown:

Another installation is already in progress. Complete that installation before proceeding with this install.

The 'Sophos Anti-Virus Install Log_yyyymmdd_hhmmss.txt' (located in C:\Windows\Temp) shows the following message near the end of the log file:

MainEngineThread is returning 1618

First seen in

Sophos Anti-Virus for Windows 2000+

Cause

This error is seen if another installation is in progress or has not completed properly.

What To Do

  1. Open the Task Manager on the local computer (right-click the system tray and select 'Start task Manager')
  2. Under the processes tab, select any processes named 'msiexec.exe' (there could be multiple entries) and then press 'End Process'.
  3. Perform the installation once more


 
If you need more information or guidance, then please contact technical support.

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