In this article, I will discuss solutions for fixing the Microsoft Outlook 2010 Not Responding error.

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Install Latest Updates

To resolve the Microsoft Outlook 2010 Not Responding error, make sure to install the latest updates for your Windows operating system. Open the Control Panel and navigate to Windows Update to check for any available updates. Keeping your system up to date can help fix bugs and vulnerabilities that may be causing Outlook to freeze. After updating, restart your computer and open Outlook to see if the issue persists.

If the problem continues, try running Outlook in safe mode to see if any third-party plugins or add-ins are causing the error. To do this, press and hold the Ctrl key while opening Outlook. If Outlook opens in safe mode without any issues, you may need to disable or remove any recently installed plugins.

Additionally, check for any corrupted files or settings in your Outlook profile. You can create a new Outlook profile by going to Control Panel > Mail > Show Profiles, and then adding a new profile. Set the new profile as the default and see if Outlook responds properly.

Start in Safe Mode

To start Microsoft Outlook 2010 in Safe Mode, follow these steps:

1. Close Outlook if it is open.
2. Press the Windows key + R to open the Run dialog box.
3. Type outlook.exe /safe and press Enter.
4. Outlook will start in Safe Mode, which disables add-ins and other customizations.
5. Check if Outlook is responding properly in Safe Mode.
6. If Outlook works fine in Safe Mode, the issue may be caused by an add-in or customization.
7. Disable add-ins or troubleshoot other customizations to identify the root cause of the problem.

Starting Outlook in Safe Mode can help isolate the issue and determine if third-party add-ins or customizations are causing the program to not respond. This simple troubleshooting step can help resolve the error and get Outlook back to working normally.

Check for Open Dialog Boxes

Microsoft Outlook dialog box

  • Close any open dialog boxes in Microsoft Outlook 2010.
  • Check for any minimized dialog boxes that may be hidden.
  • Look for any pop-up notifications or alerts that require action.
  • Make sure all error messages or prompts have been addressed.
  • Restart Microsoft Outlook 2010 to clear any lingering dialog boxes.

Close Programs Using Outlook

If Outlook itself is not responding, you can also try ending the Outlook process in Task Manager to restart it. This can help resolve any issues that may be causing Outlook to freeze or not respond.

Closing programs using Outlook that are not responding can help improve the overall performance of your computer and prevent any further errors or issues.

Disable Add-ins

1. Open Microsoft Outlook 2010.
2. Click on the “File” tab in the top left corner.
3. Select “Options” from the menu.
4. In the Outlook Options window, click on “Add-ins” in the left-hand menu.
5. Under the “Manage” dropdown menu at the bottom, select “COM Add-ins” and click on “Go…”
6. Uncheck any add-ins that you want to disable and click “OK.”
7. Restart Outlook for the changes to take effect.

Repair Office Programs

To repair Microsoft Outlook 2010 when it is not responding, follow these steps:

Step 1: Close any other programs or windows that may be open to free up system resources.

Step 2: Restart your computer to refresh the system and clear any temporary issues.

Step 3: Open Outlook in safe mode by holding down the Ctrl key while opening the program.

If Outlook still does not respond after these steps, try repairing the Office programs:

Step 4: Go to Control Panel and select “Programs and Features.”

Step 5: Find Microsoft Office in the list of installed programs and select “Repair.”

Step 6: Follow the on-screen prompts to complete the repair process.

By repairing Office programs, you may be able to resolve any underlying issues causing Outlook to not respond.

Repair Outlook Data Files

Next, click on Settings and then Repair to start the repair process. Follow the on-screen instructions to complete the repair. If the issue persists, try running a Windows Update to ensure your operating system is up to date.

Reduce Mailbox Size

Delete old or unnecessary emails: Go through your inbox and delete emails that are no longer needed or are old.

Archive emails: Move older emails to an archive folder to free up space in your mailbox.

Empty the Deleted Items folder: Regularly empty the Deleted Items folder to permanently remove deleted emails.

Remember to also check your Sent Items folder and other folders for unnecessary emails that can be deleted or archived.

Turn Off Antivirus Temporarily

To resolve the Microsoft Outlook 2010 Not Responding error, one solution is to turn off your antivirus temporarily. Antivirus software can sometimes interfere with the functioning of Outlook, causing it to become unresponsive. By disabling your antivirus temporarily, you can check if it is the cause of the issue.

After turning off your antivirus, try opening Outlook again to see if the problem persists. If Outlook now responds without any issues, you may need to adjust the settings of your antivirus to allow Outlook to function properly.

If turning off the antivirus does not resolve the problem, you can explore other troubleshooting steps such as checking for software updates, repairing the Outlook installation, or creating a new Outlook profile.

Create New User Profile

To create a new user profile in Microsoft Outlook 2010, follow these steps:

1. Close Outlook if it is running.
2. Press Windows key + R to open the Run dialog box.
3. Type Control and press Enter to open the Control Panel.
4. In the Control Panel, click on Mail.
5. Click on Show Profiles.
6. Click on Add to create a new profile.
7. Enter a name for the new profile and click OK.
8. Follow the prompts to set up the new profile with your email account.
9. Once the new profile is set up, open Outlook and select the new profile from the profile list.
10. You can now use the new profile to see if the “Microsoft Outlook 2010 Not Responding” error is resolved.

Check for Large Processes

Large Processes Description
Outlook.exe Microsoft Outlook main executable process
SearchIndexer.exe Windows Search Indexer process
Antimalware Service Executable Windows Defender Antivirus process
Cortana.exe Windows personal assistant process

Disable AppData Redirection

Disable AppData Redirection - Microsoft Outlook settings menu

1. Open the Control Panel on your Windows computer.
2. Click on “Folder Options” and then select the “View” tab.
3. Scroll down and uncheck the box that says “Hide protected operating system files (Recommended).”
4. Click “Apply” and then “OK” to save the changes.

Next, navigate to the AppData folder:

1. Press Windows key + R to open the Run dialog box.
2. Type “%appdata%” and hit Enter.
3. Locate the Microsoft folder and open it.
4. Find the Outlook folder and delete it.

Finally, recreate the Outlook profile:

1. Open Outlook and go to File > Account Settings > Account Settings.
2. Click on the Data Files tab and then Add a new Outlook data file.
3. Follow the prompts to set up a new profile.


How do I fix Outlook 2010 not responding?

To fix Outlook 2010 not responding, you can start by installing the latest updates, ensuring that Outlook is not being used by another process, checking for issues with external content, investigating possible add-in issues, and assessing whether your mailbox is too large.

How do I restart Outlook that is not responding?

To restart Outlook that is not responding, you can close the program, then open it in safe mode by typing “Outlook.exe /safe” in the Start menu search bar in Windows 10. This can help resolve the issue and allow you to open Outlook normally again.

Is Outlook 2010 no longer supported?

Outlook 2010 is no longer supported as of October and will not receive any further updates or security patches.

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