Author Archives: Douglus James

ByDouglus James

Getting Error 0x80070021 in Outlook PST Locked by Another Process

Well most of the Outlook users may be known to error 0x80070021. When this error message is displayed it generally denotes ‘the process cannot access the file because another process has locked a portion of the file’. So when the error is encountered it makes the PST file inaccessible and prevents to perform any operations in Outlook. It halts the service to send/receive mails via Outlook. So users ask questions ‘How to Fix Outlook Error 0x80070021’ and why Outlook PST Locked by another process.

Careful methods have to be adopted as this error prevents to access .pst file. The PST file is the main file over which Outlook works and if the file gets corrupts it poses threat to Exchange Server Database too. So, here are some steps by which Outlook PST error can be removed easily.

Causes of Error Code 0x80070021 in Outlook

There are many reasons which could corrupt PST like

  • When the MS Outlook application is not closed properly last time
  • If the MS Outlook is running, even if it is closed then PST is used by another resource error is displayed
  • Data Storage Problem
  • Large size of Outlook PST

These are some common errors that causes PST vulnerable and restricts Outlook usage

Solving the error 0x80070021 in Outlook

Following are some easy solutions to solve ‘Outlook Used by another process’

Close Outlook Application Completely

  • Close the Outlook and exit
  • Quit outlook from notification tray as well
  • Remove Outlook from running applications in Task Manager

One thing to note here is that you have to close the application and not the account.

Data is not stored in PST

If the drive in which outlook PST is stored gets corrupt then this error may appear. So, it is recommended to check the drive, folder in which PST is stored. Check that the folder is not removed or deleted.

Large size of PST is also the main reason why Outlook shows error 0x80070021. If the PST is about to reach storage limit then, remove the un-necessary attachments, media files and other data to reduce the size.

Close Applications Using Outlook

There are many applications which uses MS outlook. Suppose you visit a website that is asking for e-mail authentication, then it will restart Outlook automatically. Close the website or any similar applications and check whether you can access PST file or not.

System Restore to Latest Point

Well, if the above techniques doesn’t work out, then you can use system restore

  • Login to computer as administrator
  • Go to Start, select Programs and then Accessories
  • Select System tools and then ‘System Restore Setting’
  • A new dialog box will appear, click on “Restore my computer to earlier time”
  • Select latest restore point available and then next
  • When the process gets complete, restart system and check the problem is solved or not

With these simple 4 methods you can avoid error 0x80070021 in Outlook. However if the manual method does not fix the problem then you can select Outlook PST repair tool. It quickly repairs the damaged file and restore in new PST File. An additional features of this tool is that you can split large pst files to reduce size of PST.

ByDouglus James

Solution to Repair Common Outlook Error Codes

MS Outlook is one of the popular email client used across the globe. Microsoft Outlook provides amazing features. We can save our contacts, mails, share calendar, offline storage and many others. All this data is stored in PST (Personal Storage Table).

Microsoft Outlook versions have different PST file size. PST file is the most important part of Outlook and a corrupted file effects performance. MS Outlook may face errors due to large amount of data, corrupt PST file and account settings. Common Errors that occur in MS Outlook are:

1. MAPI Error

DLL (Dynamic Link Library)files of Outlook are prone to error. If Mapi32.dll file is corrupt then you can get the error message 0x8007000E. it generally occurs if Outlook doesn’t get enough resources to run from OS.

Solution: You can try closing some running programs in windows. If that doesn’t work out then use MAPI Repair Tool (Fixmapi.exe). Run Fixmapi.exe tool and restart Outlook.

2. Error in Sent items file (Outlook Express)

If you get the error code 0x800C013B than there could be a chance that your sent items folder file is damaged. Follow below steps to resolve this issue

  • Find the Sent Items.dbx file by clicking on start menu
  • Go to Look in Box>>primary disk(C: drive) and click Find Now.
  • Right Click on Sent Items.dbx file and rename it to Sent Items.old>>OK.
  • Restart Outlook and the file will be changed automatically to Sent Items.dbx.

 3. Server Time Out

Sometimes we face the error Server time out. It may be due to poor internet connection or any other network problem. To resolve this issue we can increase the server time-out setting.

  • Open Outlook in your system
  • Go to File menu>>Info>>Account Settings (2010 and above versions). For Outlook 2007 (Tools>>Account Seetings)
  • Select POP3 account>>Click Change
  • Go to More Settings>>Advanced tab
  • Increase the limit of server time-out setting

4. Corrupt PST file

Corrupt PST file can cause problems with Outlook. All mails, contacts, messages, calendar events, tasks are stored in PST. Damaged PST file could result in performance issues.

You can repair PST file with built in scanpst.exe tool. Scan the pst file for any errors and if it asks to repair, click on start button to repair file and recover data. You can scan file two or more times for fast and reliable performance of Outlook.

5. Other General errors may occur in Outlook due to other reasons. In that case you can troubleshoot problems by:

  • Restart system and make sure it is connected to internet properly.
  • Check that Account Settings are properly configured
  • For Security issues, update antivirus and check windows firewall settings.
  • Delete any suspicious emails from your mail box.
ByDouglus James

Best Outlook PST Repair Software for Outlook 2016

Microsoft Outlook is most widely used email client worldwide; It stores emails and other user information into a single file known as Personal Storage Table (PST) file. The Outlook PST file is also responsible for most of the errors which occurs due to corruption of PST file.

Once the PST file is corrupted all emails, contacts, tasks, journals, calendars etc. gets inaccessible. To overcome this situation Microsoft does provide a free utility called scanpst.exe also known as Inbox Repair Tool. The motive of this utility is to repair PST file and get Outlook back to running.

However, the limitation of Inbox Repair Tool is that it is not able to repair severely corrupted PST file. Only small errors like header corruption can be removed with scanpst.exe. There are many other third party PST Repair Software available in the market which claims to remove all kinds of errors from damaged PST file. Today we will discuss few best outlook pst repair software for Outlook 2016 with their features.

Let’s Check Best PST Recovery Tools for Outlook 2016

  1. Stellar Phoenix Outlook PST Repair Software

Stellar Phoenix Outlook PST Recovery tool is by far the best and affordable outlook pst recovery software which I have ever tried. It’s easy to use interface makes it number one choice among Outlook users who wish to repair damaged Outlook PST file with minimum hassles.

The latest version of Stellar phoenix Outlook PST Repair tool supports Windows 10 and Outlook 2016. It allows user to locate the PST file if the location is not known to the user. Outlook repair tool from Stellar Phoenix allows user to retrieve all data from encrypted PST file also.

It creates a new PST file and store all recovered information into newly created PST file which can be imported to Outlook to access all emails again. Moreover software provides option to save recovered items to EML, MSG, RTF, HTML, and PDF formats.

Emails lost after emptying Deleted Items Folder can also be recovered with this pst recovery software. Using this software you can also recover selective messages from PST file. Priced at $99 it’s truly a value for money tool to go for.

  1. DataNumen Outlook Repair

DataNumen Outlook Repair formerly known as Advanced Outlook Repair is another good choice as far as repairing damaged Outlook PST file is concerned. DataNumen Outlook Repair claim to recover more data than any other tool available in the market. The recovery rate of this tool is best in the industry. DataNumen Outlook Repair software supports latest version of Microsoft Outlook i.e Outlook 2016 and latest OS Windows 10.

With the use of DataNumen Outlook Repair software you can repair PST file as big as 16777216 TB (I.e. 17179869184 GB) in size. You can also split large PST file into smaller manageable pst files with the use of this tool. Items recovered using this software can be saved to ext, RTF and HTML formats easily. The best part is you can simultaneously repair many PST file thus saving a lot of user time.

The only negative of this software is its price, priced at $199 for single user license is a bit too much as compared to other products available in the market.

ByDouglus James

Repair PST File in Outlook 2016

Microsoft Outlook is one of the popular email client used for personal and business purpose worldwide. Outlook offers number of user friendly features with other counterparts failed to provide which make it number one choice for email communication. It also allows user to access emails even when the internet connectivity is not available.

Outlook stores emails and other user data in a .pst file which is stored at user location, sometimes this .pst file gets inaccessible due to various reason bringing communication to a halt. So it is important to learn how to repair pst file when such situation arises.

In today’s article we will look at the various reasons which makes PST file corrupt or inaccessible and methods which can be followed to repair corrupt PST file in Outlook 2016.

Download Stellar PST Repair Tool to Repair PST FileDownload PST repair

Common Reasons for Corrupt PST File in MS Outlook 2016

Microsoft Outlook 2016 is the latest version of Outlook, Though a lot of new features are added to Outlook 2016 there are some issues which still remain the same as in previous versions. Microsoft Outlook 2016 pst file tends to become corrupt frequently like any older version PST file. Some common reasons for corrupt PST file includes –

  • Large Size of PST file: The limit on PST file size in Outlook 2016 is 50 GB but using Outlook on daily basis for communication the size would increase eventually. When the pst file is big there are problems archiving the pst file which results into corruption of PST file.
  • Virus Attacks: The other main reason of corruption of PST file is virus attack, when we download software from unreliable sources a piece of software is installed with the program you download and make your health and working PST file to corrupt and inaccessible one. So it is always advised to download software from a genuine source only.
  • Use of Unreliable Tool: When the PST file grows big and you use some software from unreliable source to clip the PST file can make your PST file corrupt. There are some free methods to reduce the size of PST file like Archiving, Import/Export and Moving Data to a new PST file.
  • Unclean Shutdown: It is advised to shut down Outlook program properly, Unexpected shutdown of system when the MS Outlook program is still open may lead to corrupt PST file and loss of data.

When your PST file gets corrupted from the reason mentioned above or any other unknown reason you are not able to access emails or any other information. To overcome this situation steps is to be taken to repair damaged pst file which are mentioned in next section of this article.

Repairing Corrupt Outlook 2016 PST file

Microsoft does provide free Inbox Repair Tool which is also known as scanpst.exe to remove errors from PST file and get Outlook back to the working again.  Microsoft Outlook 2016 also include Inbox Repair Tool but the location of scanpst.exe in Outlook 2016 is different from previous versions.

Steps to Repair PST File in Outlook 2016

  1. Exit Outlook
  2. Make a copy of PST file ( PST files in Outlook 2016 are stored in Documents\Outlook Files folder if it is anew install. If you have upgraded from Outlook 2007 or previous version the file is hidden at drive:\Users\user\AppData\Local\Microsoft\Outlook).
  3. Find Inbox Repair Tool (Scanpst.exe) – The location of inbox repair tool in Outlook 2016 is usually <drive name>:\Program Files\Microsoft Office\Office16.
  4. Once you have located the scanpst.exe, Double Click on it
  5. Click Browse to locate the PST file you want to repair


repair pst file outlook 2016


  1. Now Click on “Start” button to repair pst file.
  2. After the process is complete you have to open outlook and create new Outlook profile.
  3. Now drag and drop recovered items from Lost and Found Folder to your newly created PST file.
ByDouglus James

Prevent PST File Corruption

All the data that is stored on your computer through MS Outlook, Windows Messaging and MS Exchange Client are saved in .pst file format. MS Outlook is very important software in the working of an organization. Almost all the work depends on this software, be it from keeping a track of your emails or messages, or keeping your calendar updated for any meetings or scheduling any meeting and informing all the people in your contact list, or making memos and reminder, and much more. MS Outlook is the heart of the business and any loss in the data can cost you and your business a lot. The .pst files are very fragile and they need to be kept safe by preventing pst file corruption and this can be done by keeping few necessary things in mind.outlook-repair

What steps can be taken to prevent pst file corruption?

  • Do not exceed the size of the PST file. PST files are delicate and they can easily get corrupt if they have larger size or if they are bloated. Even if your MS Outlook version supports up to 50 GB data in the PST file, then also you should keep your PST file up to 10 GB only for any data loss. Moreover, the scanning and processing of operations with small PST files are faster than the larger ones which is one of the major reasons why one should create several small PST files.
  • For the older versions of PST files. The 2002 and before version of MS Outlook have a memory storage limit of 2 GB. One will start facing several problems as soon as the memory of the PST files reaches up to 2 GB and it is therefore suggested to keep the average size of the older version PST files up to 1.5 GB.
  • Storing your PST file on server or network drive can cause corruption. PST files are meant to be saved on computers. Data loss and corruption can be prevented if the PST files are not shared on the network drive or server, as they cannot handle such dense PST files and moreover access by multiple users will increases the chances of getting corrupted PST files.
  • NEVER EVER shut down the system without quitting the MS Outlook. This task can be tiring at times but making sure that the Outlook is closed before you shut down your system is a good practice as it can prevent the PST files from getting corrupted and you can save all your hard earned data.
  • Keep a track of your Antivirus program. Large PST files contain lots of emails and data and these files are scanned and protected by the Antivirus program in your PCs. Any modulations in the operation of the Antivirus program will affect the PST files as well. This can be a cause for your PST files getting corrupted. Always check your Antivirus program according to your PST files’ need.
  • Create backups. It is a good practice to always create a backup of your PST files in a period manner. This will ensure that your data is safe even if the PST files are corrupt.

It is always said that “Prevention is better than cure”, so keep these things in mind and prevent your .pst files from getting corrupted and the loss of your data too.