Body
Issue/Question
I've already removed my previous version of Office and each time I attempt installing Microsoft 365 I get the following error message:
Couldn't start Office installation
We're sorry, but we could not start your Office installation. Another installation is in progress. Please try again later.
Resolution
- Download the Fix It application.
- Run the Fix It application titled O15CTRRemove.diagcab.
- Select Next.
- It will take a couple of minutes before the Fix It application finishes removing all traces of previous Office installations.
- Select Finish.
- Restart computer.