Last Updated:  June 10, 2020


When users attempt to start an Office Application the following error may occur:

Windows cannot find "c:\program files\microsoft office\root\office16\outlook.exe" Make sure you typed the name correctly, and then try again.

This issue may occur for any Office application and for other non-Office applications.


The cases we investigated were due to Avast and confirmed in the Avast forum,  Per the guidance in that thread a fix has been released and you will get an automatic update.  Please see the specifics in that thread for more information.  

More Resources

Icon Experts (brain, gears)

Ask the experts

Connect with experts, discuss the latest news, updates, and best practices, and read our blog.

Microsoft Tech Community

Icon Community

Get help in the community

Ask a question and find solutions from Support Agents, MVPs, Engineers, and other Office users.

Office Forum on Answers

Icon feature request (light bulb, idea)

Suggest a new feature

We love reading your suggestions and feedback! Share your thoughts. We're listening.

Provide feedback

See Also

Fixes or workarounds for recent Office issues

Need more help?

Expand your skills


Get new features first


Was this information helpful?

What affected your experience?

Thank you for your feedback!