Alex Ruben
How to Fix the 0x80070021 Error in Outlook
The 0x80070021 error can disrupt your ability to send and receive emails in Outlook. This guide walks you through several troubleshooting steps to effectively resolve this issue. By following these steps, you will learn how to identify the problem and implement solutions to restore your email functionality.
Step 1: Run Outlook as Administrator
Begin by ensuring that Outlook has the necessary permissions. To do this:
- Right-click on the Outlook shortcut.
- Select Run as administrator.
This can resolve permission issues associated with the error.
Step 2: Disable Antivirus Software Temporarily
Your antivirus software may be interfering with Outlook’s operations. You can test this by temporarily disabling it:
- Locate your antivirus program in the system tray.
- Right-click the icon and select the option to disable or turn off.
Remember to enable it again after testing to ensure ongoing security.
Step 3: Check for Windows Updates
Sometimes, missing updates can cause software conflicts. Ensure your Windows operating system is up to date:
- Press Windows + I to open Settings.
- Select Update & Security.
- Click on Check for updates and install any available updates.
Step 4: Repair Outlook
If the previous steps haven’t resolved the issue, you may need to repair your Outlook installation:
- Open the Control Panel.
- Select Programs and Features.
- Locate Microsoft Office (or Outlook) in the list.
- Right-click and choose Change.
- Select Repair and follow the prompts.
Step 5: Create a New Profile
If the error persists, try creating a new Outlook profile:
- Open Control Panel and select Mail.
- Click on Show Profiles.
- Select Add to create a new profile.
- Follow the prompts to set up your email account on the new profile.
Step 6: Check File Permissions
The error can sometimes be caused by issues with file permissions on your PST or OST files. Verify their permissions:
- Locate your Outlook data file (look in the default location, usually at
C:\Users\YourUsername\AppData\Local\Microsoft\Outlook). - Right-click on the file, select Properties, and navigate to the Security tab.
- Ensure your user account has full control. If not, adjust the permissions.
Extra Tips & Common Issues
Here are some additional tips:
- Always back up necessary data before making changes.
- Keep your software and antivirus updated to prevent future issues.
- If problems continue, consider reaching out to Microsoft Support for further assistance.
Conclusion
By following these steps, you should be able to resolve the 0x80070021 error in Outlook and enhance your email experience. If issues persist, you may want to explore additional resources or reach out for professional help.
