Summary

Having trouble launching Outlook on your PC?

Well show you what to do on your Windows 11 or Windows 10 PC.

Why Won’t Outlook Open?

Microsoft Outlook app.

Hannah Stryker / How-To Geek

Outlook doesnt open on your PC for many reasons.

You may have installed an add-in thats causing problems with the app.

Or, your PC may have a virus or malware infection, preventing your app from launching.

Open Outlook in safe mode.

Here, we list fixes for the possible causes, starting with the most likely culprit.

Go in order so you have best chance of getting back to your inbox as quickly as possible.

These add-ins may be working incorrectly, causing the app not to launch.

Select an add-in and choose “Remove."

In this case,open Outlook in safe mode where your add-ins arent loadedand remove any suspicious add-ins.

To do that, open Windows Run dialog box by pressing Windows+R.

When your add-ins are removed, close andrelaunch Outlook.

Choose “Full Scan” and select “Scan Now."

Your issue should now be resolved.

In this case,run a full virus check on your PCto find and remove any threats.

To do that, launch your PCs Windows Security app.

Select “Delete” in the menu.

In this app, navigate to Virus & Threat Protection > Scan Options.

Here, fire up the “Full Scan” option and choose “Scan Now.”

Wait for the antivirus to scan your system, find any viruses, and remove those items.

Select “Uninstall a Program."

Then, cycle your PC and launch Outlook.

Clear Your Outlook Cache

Outlook caches various files to speed up your app experience.

When you have issues with the app, its likely the apps cached files are corrupted.

Select the Microsoft Office installation and choose “Change."

In this case, youll have toremove your apps cacheto resolve your issue.

Your app will rebuild these files as you send and receive emails as well as use other app features.

To do that, launch the Run dialog box using Windows+R.

Select “Quick Repair” and click “Repair."

Here, select all files by pressing Ctrl+A.

Then, right-click a selected file and choose “Delete” (a trash can icon).

When your cache files are deleted, launch Outlook, and the app should open without problems.

Click “Account” in the left sidebar.

To enter the tool,open Control Paneland select “Uninstall a Program.”

Select your Microsoft Office installation on the list and choose “Change” at the top.

In the “User Account Control” prompt, select “Yes.”

Select Update Options > Update Now.

Youll see the Office repair tool on your screen.

Here, unlock the “Quick Repair” option and choose “Repair.”

Wait while the tool fixes your Outlook problem.

Reset Outlook’s view settings.

This option takes longer than the first one and requires an active internet connection to resolve your app issues.

Once youve used this app, launch your Outlook app, and it should work as expected.

Old app versions often have many issues, and these issues are usually fixed in newer versions.

You canupdate your Outlook appto resolve your launch problem.

To do that, launch a non-Outlook Office app on your PC.

Well use the Word app.

In the apps left sidebar, select “Account.”

On the right pane, choose Update Options > Update Now.

In this case, you canreset your view settingsbefore opening the app.

To do that, open Run using Windows+R.

Your issue should now be resolved.

And thats how you get Outlook to open without problems on your Windows 11 or Windows 10 PC.

Enjoy using your favorite email client!