How To Fix Outlook CRC Error?

How To Fix Outlook CRC Error


Let’s catch complete detail on Outlook PST file CRC error; like what it is, what causes CRC error in Outlook, and how to fix Outlook CRC error.

What Is Outlook CRC Error?

Cyclic Redundancy Check CRC Error indicates error encountered in any specific file or mainly in the hard drive. It doesn’t show that your Outlook application is having any kind of issue. Actually it indicates that there are some issues with the place where Outlook PST file is kept in the hard drive.

So, it is found that this Outlook CRC error usually comes when trying to copy the PST file which is located in the bad sector of the hard disk.

Besides that, you will also encounter CRC error in Outlook at the time of downloading emails from Outlook. This ultimately shows that your Outlook PST file has got broken or corrupted somehow. On the other hand, can’t open Outlook attachments or cannot start Outlook; like issues is a sign of critical corruption cases.

But you don’t need to panic; as there are some fixes through which one can easily get rid of this Outlook CRC error.

Before that let me explain why you are frequently getting this Outlook CRC Error.

 Error message:

“File path\filename.pst could not be accessed. Data error. Cyclic redundancy check”.

Outlook CRC Error

What Are The Causes For Outlook CRC Error?

Most common reasons behind the occurrence of this Outlook CRC Error are:

  • Incomplete download of Outlook emails.
  • Upgrading Outlook application may lead to corruption of PST files
  • Virus or malware attack can destroy all data including PST files
  • Improper or abrupt closing of Outlook application leads to the corruption of Outlook PST files.
  • Cyclic redundancy check error usually comes when there is a bad sector present on the hard drive.
  •  The occurrence of some sort of Outlook app malfunction.

How To Fix Outlook PST File CRC Error [Manual Ways] ?

You can fix Outlook PST file CRC error by following the below-given methods. So, in our first section, we will learn how to fix Outlook CRC error manually.

Whereas, in our second section we will learn how to resolve CRC error in Outlook using any appropriate Outlook PST file repair software tool.

To fix CRC error manually follows the below steps.

Method 1: Check Hard Disk For Errors

If Outlook CRC error has occurred in the hard disk then immediately follow down the steps given below.

  • Click “Start”, open Run and type cmd and hit Enter.


  • When the command windows open, type chkdsk/f and hit Enter.


  • You will be notified with the following message – the type of the file system is NTFS, cannot lock the current drive.
  • It means that chkdsk cannot perform as the volume used by other processes. Would you like to schedule this volume to be checked next time the system restarts? (Y/N).


  • You must press Y and perform restart your computer. Now open the MS Outlook, if your CRC is solved its good, if not then follow another method below mentioned.

Method 2: Fix Outlook CRC Error With Scanpst.Exe Tool

The second manual solution through which you can fix CRC Error in Outlook is by using the Outlook inbuilt utility Scanpst.Exe Tool.

As this tool is quiet efficiently scan each of the object folders and also make a check for the data integrity issues.

So, let’s know where does this Scanpst.Exe Tool locate and how to use it.

In different Outlook version Scanpst.Exe Tool is located in different locations:

In Outlook 98/97: C:\Program Files\Common Files\Windows Messaging\SCANPST.EXE

In Outlook 2000: C:\Program Files\Common Files\System\MAPI\\NT\SCANPST.EXE

In version 2002/XP: C:\Program Files\Common Files\System\MAPI\\SCANPST.EXE

In Outlook 2003: C:\Program Files\Common Files\System\MSMAPI\ to locate Inbox Repair Tool.”

In Outlook 2007:  C:\Program Files\Microsoft Office\Office12

In Outlook 2010: C:\Program Files\Microsoft Office\Office14

In version 2013: C:\Program Files\Microsoft Office\Office15

In Outlook 2016: C:\Program Files\Microsoft Office\Office16

Following are steps to run Scanpst.Exe Tool

1: First of all close your Outlook application if in case it is already opened.

2: Make a double click on the Outlook application to start it.

3: Tap on the Browse option to reach the folder path where your entire PST file is got saved.

scanpst 1

4: Then, hit the start button to begin the scanning process. After then don’t forget to repair .OST and.PST files.

5: Now this tool will search all your files and folders for the errors. You will get the list of reported errors at the end of the process.

scanpst 2

6: At the end tap to the Repair option for the recovery of MS Outlook data file.

scanpst 3

How To Fix Outlook CRC Error [Automatic Ways]?

After following the above two manual methods even if your PST files are showing CRC error. Then it is recommended that you must use professional and appropriate Outlook PST File Repair Tool to fix corrupt PST files.


The tool recovers and repairs Outlook PST files safely and securely. You can try a free version of the Outlook PST file repair tool to know the functionality of the software. The software is compatible with almost every Windows OS version.

Steps To Recover Outlook PST files:

Step 1: Install and Run Outlook PST Repair tool. Click ‘Select Outlook File‘ to choose a corrupt PST file.


Step 2: Once the PST file is selected, click on ‘START‘ button to begin the scanning.


Step 3: When the scanning process completes, all the recovered mailbox folder and other items will be viewed on the left panel. You can select any item you want to recover.


Step 4: After selecting all or some of the items click on the ‘Save Recovered File’ button to recover the PST file on the desired location on PC.


Step 5: When the saving process completes, a dialog box will confirm the process and show the ‘Destination path’ and ‘Recovered File Size’.



Now that you know, among several causes of Outlook inaccessibility issue, one foremost cause is the data CRC error.

However, after following the above solutions you will be able to fix Outlook CRC error in a simple and easy manner.