Categories: Outlook

How to Fix Data Cyclic Redundancy Check(CRC) Error in Outlook PST

MS Outlook is a largely used email client software that is developed by Microsoft. Apart from being just an email application it also offers multiple functionalities in the form of a contact manager, note-taking, journal, calendar, etc. While offering different features it also prone to corruption for various reasons, and one of the serious corruption cause is “Data Error (CRC)”.

If any interruption is caused while using Outlook, your data file might be prone to CRC error. And no longer data can be used. Follow the below sections to know about the easiest solution to fix the data cyclic redundancy check (CRC) error in Outlook. Before that, learn about causes of cyclic redundancy check error below.

Causes of cyclic redundancy check error in Outlook.PST:

  • Abrupt termination of Outlook application
  • Incomplete download of MS Outlook emails
  • PST File Size Issue
  • Malware infection

There are plenty of errors that affect Outlook email client on a daily basis. Problem with Outlook can directly affect your work routine. Firstly, to fix the data CRC errors try out these few simple methods as indicated in the coming sections.

Data Cyclic Redundancy Check Error:

Basically, CRC is an error-detecting code that is commonly used to detect accidental changes to raw data in digital network and storage devices. It is called CRC (cyclic redundancy check) because the algorithm used to check error is cyclic codes. It majorly helps in indicating any errors in the PST file during read and write operations.

Is it possible to fix data cyclic redundancy check error in Outlook?

Yes, there exist two manual methods to fix CRC error in Outlook. One is using chkdsk command in the command prompt and another is scanpst.exe (inbox repair tool). Inbox repair tool is an inbuilt service provided by the Microsoft company to repair OST and PST files.

Method 1: Fixing data CRC error in Outlook with chkdsk command

A command prompt (cmd) is a command-line interpreter that is available in most of the Windows operating systems. It’s a program that helps a long way in fixing the CRC error using the following sequence of commands.

  • Step 1: Go to search bar and type cmd. Run the application
  • Step 2: Type “chkdsk disk name: /f” and press enter. Disk name refers to the disk that is chosen to run for scanning. In case error “Access Denied as you do not have sufficient privileges. You have to invoke the utility running in an elevated mode” occurs
  • Step 3: Go to the initial step and click on “Run as Administrator”.
  • Step 4: Type “chkdsk disk name: /f” and press enter.
  • Step 5: After completing close chkdsk and restart the computer.

Usually, these steps won’t resolve errors completely. Since, it requires a high knowledge of command-line execution, a single line error in execution leads to the complicated run in command prompt.

If the problem continues, storage drive has to be formatted. Formatting will erase all the data from the storage device. If you don’t want to lose any data, it is safe to use SFWare PST Repair tool, which is more effective and an optimum way to repair PST files.

Method 2: Fixing data CRC error in Outlook with scanpst.exe tool

It is an inbuilt utility provided by the Microsoft company to fix data cyclic redundancy check error in Outlook PST and repair files. It works by scanning each object folder by folder and checks for data integrity issues. Furthermore, where scan-PST is located and how does it help with fixing data CRC error is given below.

Where is scanpst.exe located? – simple steps to locate the inbox repair utility

  • Open task manager on Windows PC
  • Then, go to the process tab
  • Right-click on Outlook and select “Open File Location”.
  • Option to convert data without Outlook installation.
  • Now the Inbox repair tool is located in this folder by the name “scanpst.exe”.

Or manually locate scanPST.exe by setting the path,

  • In Outlook 2016, go to C:\Program Files\Microsoft Office\Office16
  • In version 2013, go to C:\Program Files\Microsoft Office\Office15
  • In Outlook 2010, go to C:\Program Files\Microsoft Office\Office14
  • In Outlook 2007, visit path C:\Program Files\Microsoft Office\Office12
  • In Outlook 2003, go to C:\Program Files\Common Files\System\MSMAPI\ to locate Inbox Repair Tool.
  • In version 2002/XP, visit link C:\Program Files\Common Files\System\MAPI\\SCANPST.EXE
  • In Outlook 2000, go to C:\Program Files\Common Files\System\MAPI\\NT\SCANPST.EXE
  • In Outlook 98/97, visit path C:\Program Files\Common Files\Windows Messaging\SCANPST.EXE

Following are the instructions for using the Microsoft Inbox utility to fix OST and PST files:

  • Step 1: Close the Outlook application if its currently open.
  • Step 2: Next, double-click on the application to launch it.
  • Step 3: Click on the Browse button to go to the folder path where the PST file is saved.
  • Step 4: Then, click on Start to initiate the scanning process and repair Outlook data files (.PST and .OST).
  • Step 5: Now, each file and folder will be searched to find errors. These will be reported at the end of the process.
  • Step 6: Finally, click on the Repair button to Recover Microsoft Outlook data file.

Advantages of using scanpst.exe tool:

Following are some of the benefits of using an Inbox repair tool for fixing Outlook data files (.OST and .PST):

  • It scans every folder or file to find out what is wrong with the current profile.
  • It is completely free to repair Outlook.

Drawback of scanpst.exe tool:

Listed here are some of the shortcoming that might require you to look for an alternative to ScanPST.exe

  • The time taking steps can be very tricky and locating PST file can be difficult for a home or regular user. Sometimes you find Outlook
  • Often messages are recovered in different folders than the original. Data integrity is not ensured by the Outlook inbox repair tool.
  • Repairing errors using tool may cause more damage to data

Although Scanpst.exe is convenient and free, it might not be capable of repairing the severely broken PST file. Scanpst.exe starts working directly on the original file and alters the content While SFWare utility does a copy of original file and allow changes, SFWare PST Repair tool helps retaining data integrity as well as helps in scanning and minimize the data corruption without any hassle.

Fix data cyclic redundancy check error in Outlook using SFWare PST repair tool:

SFWare Repair Outlook (PST) tool has a programmed process to repair fix PST files.

Download SFWare Repair PST tool and install in the system. Launch the software.

    • Step 1: The main screen displays three options, select one as per the need:
      • Open Default PST File
      • Select PST File Manually
      • Find All your PST Files
    • Step 2: Next screen displays two different scanning options – Normal Scan and Smart Scan. Scanning process depends on the requirements given. Provide the destination path to save repaired PST file.
    • Step 3: Then click on Repair option to start the repairing process
    • Step 4: Once the process gets over, preview all the recovered Outlook Items to evaluate fixing of data error CRC in PST files


    There are certain reasons for which Outlook PST file cannot be accessed, one foremost cause is data cyclic redundancy check error. However, after going through this article you will be able to fix the errors in a simple manner using SFWare repair tool.


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