How to Fix Outlook 365 Issues on Windows 10?

Outlook 365 is a reliable email client, but even a minor configuration issue can prevent it from working properly. Users often experience issues like

• Calendar or contacts fail to sync.
• Search functionality is not working.
• Outlook freezes or responds slowly.
• Emails are not sending or receiving.
• Outlook won’t open & keeps crashing.
• Outlook displays a “Disconnected” status.
• Outlook repeatedly asks for the passwords.
• Error messages appear while launching Outlook.

It is always beneficial to identify the root cause of the issue instead of trying random solutions like reinstalling Outlook. Let’s understand the concern completely & fix Outlook 365 issues on Windows 11 &10.

Reasons for Outlook 365 Issues on Windows 10

There can be several reasons behind Outlook 365 not working on Windows 10 and some of those are mentioned below:

• Anti-virus or firewall conflicts.
• Corrupted or damaged Outlook data file.
• Working with the corrupted Outlook profile.
• Problems with the installation of Outlook 365.
• Using outdated Outlook & Windows versions.
• Faulty COM add-ins & corrupted Office installation.
• Virus & malware attacks impact Outlook’s functionality.
• Oversized Outlook data files & poor internet connectivity.

Know Different Methods to Fix Outlook 365 Issues

We’ve presented the workable methods below to repair Outlook 365 issues in Windows 10 & 11. Read ahead to know more.

Method 1. Run Outlook in Safe Mode and Disable Add-ins

When Outlook does not function properly on your computer, run Outlook in Safe mode. Launching Outlook in safe mode loads the application without all the add-ins. Disabling the problematic add-ins may help you resolve the errors in Outlook.

Step 1. Press Windows + R keys, type in Outlook /safe. Then, press OK.

Step 2. If Outlook opens without any issue, it implies an issue with the add-ins. So, restart Outlook & tap on the File tab.

Step 3. Click on Options from the left pane, and a new window will open on your screen.

Step 4. Click on Add-ins and make sure that COM Add-ins is selected in the Manage section. Click on Go.

Step 5. Uncheck all the problematic add-ins in the COM Add-ins window and click OK.

Step 6. Enable the add-ins one by one & check the main cause of the issue. If found, disable them.

Method 2. Repairing Microsoft Office

Users can repair issues within Office 365 applications with the Quick Repair feature of Microsoft. This feature can repair Outlook 365 in Windows 11 & below versions. Follow the steps mentioned below to repair Microsoft Office:

Step 1.Press Win+R on your keyboard and type appwiz.cpl. Click OK.

Step 2.Choose Microsoft 365 Apps from the list and then click on the Change option.

Step 3.Now select the Quick Repair option and click Repair.

Step 4.Now, the repair process will start.

Step 5.After completion, restart your Microsoft Outlook application.

Method 3. Reinstall the Office Application

When the Outlook 365 application is not working correctly, you can try uninstalling and reinstalling the Office application. Through this process, you may get rid of corrupted files causing this issue.

Step 1. Close all instances of Outlook 365 running on your system.

Step 2. In the Run window, type “appwiz.cpl” & click on OK.

Step 3. On the Programs and Features window, find Microsoft Office 365 from the list of installed programs and click on Uninstall.

Step 4. Follow the process to complete the uninstallation process.

Step 5. Reinstall the latest version of the Office 365 desktop application from the official website.

Step 6. Open Outlook 365 and enter your login credentials. Then your account will be back in working condition.

Method 4. Change Your Firewall Settings

If Outlook 365 is blocking internet access due to a third-party firewall application, you can try changing your firewall settings to see if it can fix Outlook 365 issues.

Step 1. In the Run dialog box, type “firewall.cpl” and click OK.

Step 2. In the Firewall window, click on the Allow an app or feature through Windows Firewall option.

Step 3. Scroll down the programs list and find Microsoft Outlook. If it is not on the list, click on the Change settings button.

Step 4. Browse for Microsoft Outlook and click on it.

Step 5. Click on the Add button and hit OK. Restart your computer and launch Outlook 365.

Method 5. Using Microsoft Support and Recovery Assistant (SaRA)

Microsoft Support and Recovery Assistant (SaRA) is a free tool that can help to resolve various problems with Outlook on Windows 10, including connection, password authentication, and start-up issues. It can quickly detect and fix problems within Outlook, Microsoft Office, Microsoft 365, and Microsoft Teams, making sure that the root cause of the problem is resolved. Download this recovery assistant from here.

Method 6. Repair Corrupted Outlook Profile

Several issues arise in Outlook 365 due to corrupt Outlook profiles. So, there is a possibility that if we repair the Outlook profile, you can repair Outlook 365 issues. Follow the steps mentioned below to fix the corrupted Outlook profile

Step 1. Open Outlook and navigate to File.

Step 2. Choose Account settings > Account Settings.

Step 3. Choose the corrupt profile and click on Repair. Then, restart Outlook & check the status of the issue.

Note: You can also try to create a new Outlook profile to repair Outlook 365 in Windows 10 & 11.

Method 7. Disable Hardware Graphics Acceleration

Graphics acceleration can sometimes cause Outlook to freeze or display rendering issues. It is particularly helpful for users experiencing screen flickering or slow interface performance. Follow the steps below:

Step 1. Open Outlook & go to File > Options.

Step 2. Navigate to the Advanced > Display tab & enable Disable hardware graphics acceleration. Then, restart Outlook & check whether the issue is resolved or not.

Method 8. Rebuild the Outlook Search Index

This method is suitable when Outlook search returns incomplete or no results. Search performance can improve after the indexing process completes. Here are the steps:

Step 1. Open Control Panel & select the Indexing options.

Step 2. Go to the Advanced tab & choose the Rebuild option under Troubleshooting. Hit OK, as it allows Windows to recreate the search index.

Method 9. Repair Outlook PST Files

You might be facing issues with your Outlook 365 account because your PST files are corrupted. Corruption in PST files can affect Outlook’s functionality, which can hamper your work. Attempting to repair these files by manual methods like ScanPST.exe may not give satisfactory results & can also disturb data integrity.

Try taking the help of our Recoveryfix for Outlook PST Repair. You can resolve almost any Outlook error that may arise due to corrupt PST files.

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Conclusion to Fix Outlook 365 Issues

Users may face some errors while using Outlook 365 that can be troublesome. We’ve discussed the reasons behind the errors and have elaborated on some methods to fix Outlook 365 not working on Windows 10 issues.

If you’re facing issues with Outlook due to corruption in PST files, we recommend using professional software to repair Outlook PST files in a few steps and save them in the desired format at your chosen location.

FAQs

Q. Is it possible to fix the issues with the Windows update?

A. Yes. Updating Windows to the latest version can resolve compatibility, performance, and authentication problems that can affect Outlook.

Q. How do I know that my Outlook profile is corrupted?

A. There are some common signs of a corrupted Outlook profile, like frequent crashes, repeated password prompts, missing folders and startup failures.