OUTLOOK 365 auto closes after around 1 minute whilst classic works fine . No problems with other 365 apps.

Question

OUTLOOK 365 auto closes after around 1 minute whilst classic works fine . No problems with other 365 apps.

Nigel Snape 0

Recently bought a new PC running windows 11 pro. Intel® Core™ Ultra 7 255H - with ARC graphics. Cannot use OUTLOOK 365 as auto closes after around 1 minute whilst classic works fine . No problems with other 365 apps. - App has been removed and re-installed. Add-ins have also been disabled, and tried new user. All to no avail

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Answer 1

Jeronimo Fuerte 45,750 Independent Advisor

If by “Outlook 365” you mean new Outlook for Windows, please try the following:

Go to Settings > Apps > Installed apps, locate Outlook (new), select the three dots > Advanced options, then try Repair. If Repair does not help, try Reset.
Check Windows Update, including any available optional driver updates, and then open Microsoft Store > Library > Get updates to make sure new Outlook and its components are fully updated.

Since you have already reinstalled Outlook and the problem remains, before performing another reinstall it would be useful to identify exactly what is terminating the application:

Right-click Start > Event Viewer
Open Windows Logs > Application
Start new Outlook and wait for it to close
Return to Event Viewer and look for an Application Error, usually Event ID 1000, at the exact time Outlook closed.

A screenshot will be fine to help you further.

Nigel Snape 0 Reputation points

2026-09-10T21:13:31.65+00:00

I have tried a Repair and reset but no luck - have also tried in Safe mode which works. So moved to show the Event viewer with the following result:

All help appreciated.
Jeronimo Fuerte 45,750 Reputation points Independent Advisor

2026-09-11T00:11:32.7866667+00:00
I would try the following next:

Close Outlook completely, press Windows + R, and run:

olk.exe --reset

It removes the local Outlook files and WebView2 cache and returns new Outlook to a first-run state. Then open it normally, sign in, and leave it running for several minutes to see whether it still closes
Jeronimo Fuerte 45,750 Reputation points Independent Advisor

2026-09-11T18:08:50.0033333+00:00

I'm glad to hear that it resolved the issue and that new Outlook has now remained open normally.

Thank you for confirming the result. This may also help other users experiencing the same behavior with new Outlook unexpectedly closing shortly after launch.

If this answers your query, please click Accept Answer and Upvote if you found it helpful.

Answer 2

Nigel Snape 0

Tried the olk.exe --reset and it has worked - been up for an hour now so brilliant- Thanks very much for your advice.

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