In computing, the CRC (Cyclic Redundancy Check) is an error-checking code, which is used by most of the Windows applications including Microsoft Outlook. Generally used CRCs have finite field GF(2). The finite filed generally has two elements, 1 and 0. In some situations, while opening Microsoft Outlook and accessing data from the PST (Personal Folder) file, you encounter CRC errors. These errors indicate PST file corruption and make it inaccessible. In these cases, you encounter data loss problems and require PST Repair.

In a practical scenario, after MS Outlook downloads the emails to your system, you might encounter any of the below given messages:

1-"File path\filename.pst could not be accessed. Data error. Cyclic redundancy check."

In above error message, the path\filename.pst correspond the file name and location of the PST file for instance, D:\mypst.pst.

2-Data error (cyclic redundancy check)

Furthermore, you might not be able to see and access some of the downloaded emails. When you click the Deleted Items folder, you might come across the below error message:

"Error 0×80040116″

This whole behavior of Microsoft Outlook renders all of your mission critical data inaccessible and critical data loss situations. At this point, you need to find out the cause of this problem and go for PST Recovery by sorting it out.

Root of the issue

This problem generally occurs due to corruption to the Outlook PST file. The PST file might get damaged due to virus infection, power outages, improper system shutdown, application malfunction and other such issues. All these cases make the file unusable and it become essential to resolve it as quickly as possible to gain access of your valuable data.

Resolution

In order to sort out this problem, first check the hard drive for possible errors and then re-create the Outlook PST profile. To do so, go through underwritten steps:

Check Hard Drive for Errors

1-Click Start button, select Run and then type "cmd" in Open box and press Enter key.

2-At command prompt, type chkdsk /f and press Enter key.

Note- If you encounter an error message similar to following one, press Y, press Enter and then reboot the system:

"The type of the file system is NTFS. Cannot lock current drive.

Chkdsk cannot run because the volume is in use by another process. Would you like to schedule this volume to be checked the next time the system restarts? (Y/N)"

3-when disk checking process completes successfully, close command prompt.

4-Start Microsoft Outlook and if the problem remains, go for the next solution.

Re-create the PST (Personal Folder) file

1-Close Microsoft Outlook and then start MS Windows Explorer.

2-Create backup of PST file (Outlook.pst). The location of PST file might be different, depending upon the version of Microsoft Windows.

3-Rename Outlook.pst as the Old.pst.

4-Use Inbox Repair Tool to repair Old.pst file.

5-Create new PST file. For this, follow given steps:

-Start MS Outlook.

-In Create/Open Personal Folder File dialog box, type new file name in File Name text box and click Open.

-Change settings as required, click OK and then Yes button.

6-Import data from the Old.pst file to newly created PST file using Import and Export wizard of Outlook.

7-You might see two PST files in Outlook Folder List. Right-click on one, which represents original Outlook.pst file and click Close on shortcut menu.

The above solutions are helpful in a number of PST corruption situations and can help you to sort out the issue. But in case if they do not work, you need to use third party PST Recovery Software to work around this problem.

These software are specifically designed to thoroughly scan the damaged PST file and extract all of its objects including emails, notes, contacts, tasks, calendar entries, journal and so forth. With self-descriptive and rich graphical user interface, these PST Recovery Software are completely easy to use. They have read-only conduct to ensure safe and original recovery.

Stellar Phoenix Outlook PST Repair is the most advanced and efficient tool to carry out successful recovery in all cases of PST corruption. It supports recovery from the PST files of Microsoft Outlook 2007, 2003, 2002 (XP) and 2000. This software is compatible with Microsoft Windows Vista, 2003, XP, 2000 and NT4 (SP6).