Written By Akash Singh
Updated on March 31st, 2022
Summary:- MS Outlook is the most popular email client that allows users to store their information and is suggested by many industry professionals worldwide. It uses Outlook Data File(PST) to store entire mailbox data, and users can manage their emails, attachments, notes, journals, calendars, etc., efficiently. But sometimes, when any other program runs in the background or is improperly closed off the Outlook app, then there is a possibility that users may face an Outlook error 0x80070021.
In this technical write-up, you will find the maximum possible solutions to fix Outlook error code 0x80070021. Before that, let us discuss something more about the error 0x80070021.
Outlook error 0x80070021 is one of the most common problems users face while entering wrong credentials or oversized PST file corruption. An error also occurs while using Outlook express, and even though it is not that complex, it still can make the Outlook account unreachable. When an error occurs, one can not access their email but can’t send it.
There are plenty of reasons behind the occurrence of Outlook indexing error 0x80070021. Some of the common errors are listed below:
Applications Running in the Background
The issue occurs due to several other applications running in the background that may use Outlook’s features for their process like Microsoft Office Communicator, Google Calendar Sync, Skype, etc.
Outlook Application ShutDown Directly
An issue occurs when one can shut down the Outlook application directly. Also, your Outlook may not close properly because of different obstacles like add-ins that are enabled is in the working stage.
Received Email is Corrupt or Infected
In Outlook 2016, 2013, 2010, etc., error code 0x80070021 occurs due to receiving corrupt or infected emails. It could come on any sent or received email items.
Configuration Setting in Outlook
If you are trying to add your Outlook account to another mail app, you might need the POP, IMAP, or SMTP settings for Outlook. But maybe a possibility that the issue occurs due to the wrong Configuration Setting.
Hardware failure is also a reason behind the Outlook error, and due to this, users also may face the PST file corruption or damage issue. It can occur in the Data storage device, network device, and sudden power failure.
Now, let’s check out different best methods to fix Outlook error 0x80070021. All the steps are easy to perform, and there are no chances of Outlook mailbox data loss.
You can use Task Manager on your system to close the working of the Outlook app and restart it again to fix the issue. Thus, follow the steps to-do-so:
By restoring your system, you can troubleshoot the issue. Follow the steps to perform so, Start your PC as an administrator.
To fix the Outlook Error 0x80070021, you will also have to Remove the Indexing Tool. So to remove that, implement the below procedure:
Error 0x80070021: The process cannot access the file and also occur due to maximum usage of programs. Hence, you will have to try the clean boot to use Outlook with a minimum set of programs.
Step-By-Step Guide to Perform Clean Boot
If you have this installed Microsoft Office Communicator, then uninstalling it will help you to overcome the possibility of Outlook Error 0x80070021 or Outlook Error Code 0x800ccc0e occurrence.
Follow the steps to uninstall from your System
One of these above methods will surely help you to fix the Outlook error 0x80070021 without losing integrity. However, if you still face any issue, then there is maybe a possibility that your PST file gets corrupted. Thus, to fix the corruption of the Outlook PST file, you may opt for the inbox repair tool(SCANPST.exe).
After fixing the corruption of the PST file, start Outlook and check whether the error 0x80070021 is solved. Moreover, if your Outlook PST file corruption can not get fixed manually, you can go through with a professional solution.
PST Data Recovery Tool is an effective and best software to restore MS Outlook PST file data. It is competent enough to recover corrupt PST data like Emails, Contacts, Calendars, Tasks, etc. Moreover, the software saves the recovered data into different file formats like PST, MBOX, MSG, DBX, EML, etc.
Know How to Fix the Corruption of Microsoft Outlook Data File(PST) in steps
To conclude, this blog has introduced you to the top 5 best solutions to fix Outlook Error 0x80070021 in simple steps. These error pop-ups on your screen while you can manage your Outlook application. Thus, we understood the possible methods to troubleshoot the error successfully.
Moreover, If you are finding a better solution to fix the corruption of the PST file, you can use the best PST Data Recovery Tool. It supports all the versions of Outlook PST like 2019, 2016, 2013, 2010, etc.
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