Fix “extend.dat file missing” In Outlook

MS Outlook is used for storing personal information like mails, appointments, tasks, notes, calendar, attachments, journals etc. It is simple to contact person with the help of this mail management application, with the help of this application one can simply manage mails without contacting server each and every time. MS Outlook permits to cache registry entries by using add-ins such as contact-verification application. At times some modifications are made in MS Outlook as a result of it extend.dat file missing error is shown to user in following error:

"An extension failed to initialize. Cannot open file: extend.dat. The file may not exist, you may not have permission to open it, or it may be open in another program. Right-click the folder that contains the file, and then click Properties to check your permissions for the folder. You don't have appropriate permission to perform this operation"

After emergence of above error PST files becomes totally inaccessible.

Cause of Error

Users come across with extend.dat missing error due to Outlook programming fault and it is essential to fix this issue earliest to avoid severe corruption issues.

Resolution

• First of all you need to open MS Outlook.
• After that you need to click on Help menu which is located in the top of the screen.
• You need to Select “Detect and repair” from the options available in Help menu.
• After that you need to click on Start button for beginning the recovery process.
• File found by MS Outlook need to be renamed in order to fix this issue.
• You need to click on Start button from the desktop for creating new file.
• After that you need to click on Search button from the Start menu.
• You need to type “extend.dat” from the search box so that search process is completed.
• After that you require to right click on the file and click on the rename option from the menu.
• Type “extend.old” and then rename the file.
• Finally you need to restart Outlook it will be helpful for searching out the file.

In case extend.dat file missing error is not fixed with above process then to solve out this issue you need to make of PST repair tool. With the help of this application all the corruption issues related to Outlook will be fixed with few clicks.