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Are you getting a lot of confusing problem how to Fix ‘Error Code 0x80070021’ issue in outlook? Don’t worry! You might feel scared about this problem, but don’t be; we’re here to help. Our goal is to make the issue easier to understand, find possible reasons like damaged files or issues with syncing, and show you simple steps to get your inbox back to how it was.
We can help you whether you’re a tech pro or just starting to play around with computers. In simple terms, our guide breaks down the problem, names possible culprits, and walks you through workable solutions. It’s like having a friend with you as you fix Outlook and get rid of the 0x80070021 problem for good.
Let’s work together to solve this problem, so get your virtual tools ready! This guide is meant to be simple, with clear explanations and useful solutions to make your email life more peaceful again. Take a deep breath, follow the ways how to Fix ‘Error Code 0x80070021’ issue in outlook with purpose and ease, and let’s get past this Outlook problem together!
What is ‘Error Code 0x80070021’ issue in outlook
Error Code 0x80070021 means you might be having trouble with Outlook. This could be because you can’t view or sync your files, especially when you’re sending, receiving, or syncing emails. Most of the time, the problem is with the Outlook data file (PST), which means that Outlook can’t access the file correctly, possibly because the data is damaged or inconsistent.

There is a tool called Scanpst.exe that comes with Outlook that you can use to fix this issue. There is a tool that can fix the Outlook data file. It’s also possible to make a new Outlook folder and load a new data file into it. It is very important to make sure that your Outlook is always on the most recent version because updates often fix problems that people already know about.
Causes for ‘Error Code 0x80070021’ issue in outlook
- Corrupted Files: If certain Outlook files get damaged or corrupted, it can trigger error code 0x80070021.
- Incomplete Installations: Issues during the installation of Outlook or incomplete installation processes may lead to this error.
- Conflict with Antivirus Software: Sometimes, antivirus programs can interfere with Outlook operations, causing the error to appear.
- Outdated Software: Using an outdated version of Outlook or related software can be a factor in encountering this error.
- Network Connection Problems: Poor or unstable internet connections may contribute to the occurrence of error code 0x80070021 in Outlook.
- Storage Limitations: Running out of storage space on your device or mailbox can also be a cause for this error.
How to Fix ‘Error Code 0x80070021’ issue in outlook
Update Outlook
- Ensure you have the latest version of Outlook.
- Open Outlook and go to the “File” tab.
- Select “Office Account.”
- Click on “Update Options.”
- Choose “Update Now” to install the latest updates.
Disable Add-ins
- Problematic add-ins may cause Outlook errors.
- Disable all add-ins and re-enable them one by one to find the culprit.
- Go to “File,” choose “Options,” and select “Add-ins.”
- Disable all add-ins and restart Outlook.
- If the error disappears, re-enable each add-in individually until you identify the problematic one.
Repair Outlook Data Files
- Close Outlook.
- Open the Control Panel on your computer.
- Go to “Programs” and select “Programs and Features.”
- Locate Microsoft Office in the list, right-click, and choose “Change.”
- Select “Quick Repair” and follow the on-screen instructions.
Check if Outlook still running

- Open the Task Manager.
- In the Processes tab, select Outlook if it’s listed under Apps, and press the End task button.
- If Outlook is not listed under the Apps, check Background processes. If Outlook is listed there, select Outlook and click End task.
Troubleshoot in a Clean Boot State

- Clean Boot initiates the system with only Microsoft services and apps active.
- Third-party services and applications are disabled during a Clean Boot.
- Access Clean Boot via the MSConfig utility.
- In Clean Boot, open Outlook and save the PST file.
- Check for the error occurrence.
- If the error is resolved, identify the culprit application or service.
Check Antivirus and Firewall Settings
- Antivirus or firewall settings might affect Outlook’s operation.
- Temporarily disable your antivirus and firewall.
- Check for the ‘Error Code 0x80070021.’
- If the error is gone, reconfigure your security software to permit Outlook.
Conclusion
Last but not least, fixing the “Error Code 0x80070021” issue in Outlook is necessary for email contact to work properly. In order to fix this problem, users can simply follow a few easy steps to fix the mistake and get their Outlook application working normally again. Dealing with damaged files, fixing the Outlook data file, and changing the firewall settings are all easy things to do in this order.
These kinds of mistakes can also be avoided by keeping the software up to date and making regular copies of important data. When fixing technology issues, it’s important to stress how important it is to keep trying and pay close attention to the little things. If users use these methods, they can get rid of the annoying “Error Code 0x80070021” and use Outlook without any problems.
Question and Answer
If Outlook is giving you trouble, try fixing it first. Reinstalling should only be done, if nothing else works. If you decide to reinstall Outlook, you might lose data, so make sure you back it up first.
If the issues persist, create a fresh Outlook profile, upgrade to the most recent version, or contact Microsoft Support for assistance. They can help you solve any problems that are still bothering you.
Antivirus or other protection software could make Outlook not work right. You could briefly block Outlook processes by turning off your antivirus software or changing its settings. This might help you see if it fixes the issue you’re having.