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OLK File Extension

Introduction:

The OLK file extension is used by Outlook email application to store contact information related to Outlook address book. OLK files are also known as Outlook Address Book. It stores data like phone numbers, names, addresses, company data and other contact information. Basically OLK is a virtual file created in Outlook temporary folder i.e. OutlookSecureTempFolder.

Format Type:

  • Binary

Default Location in Microsoft Outlook

C:\Users\\AppData\Local\Microsoft\Windows\INetCache\Content.Outlook\A3EPPL7S\

Supported Operating System:

  • Windows Server 2003/2008/2012
  • Windows 8
  • Windows 7
  • FreeBSD
  • NetBSD
  • Linux
  • OpenBSD
  • Mac OS X
  • Android
  • iOS

Programs Supporting OLK File:

  • Microsoft Outlook
  • Microsoft Word

MIME Type

Application/octet-stream

Primary Association:

  • MS Mail Mailbag Lock
  • Outlook Address Book (Microsoft Corporation)
  • FileViewPro

OLK File Registry Keys Location:

Click on File for OLK File Extension Registry Key

Common Errors in OLK File:

  • Trouble to access the file or file may become Corrupted.
  • The program can't start because filename.olk is missing
  • The OLK Extractor is not installed or corrupted.
  • filename.olk failed. The specified module could not be found
  • Windows cannot properly load your filename.olk file
  • Access violation in module 'filename.olk'
  • Invalid Registry key Entry. In this situation, you may get the following error message:
Click on File for OLK File Extension Registry Key

Extract OLK File:

To extract your OLK file requires correct application to be installed in your Computer. These application must be associated with the OLK extension to extract or edit the file. If associated programs are installed then double-click on the OLK file to open the file. In a situation, if it is not installed then one can use OLK file exporter to extract the file.

Note: Text-editor like Notepad can also be used to extract and edit the OLK file as it contain unformatted plain-text and support the file format.

Recover Hidden OLK File:

Outlook save the attachments in a sub-directory of Temporary Internet Files folder. Because it check the registry file to examine that the OLK folder is created or not. If it is created, Outlook save the files into the existing folder. If it is not created, the Outlook first copy the attachments as a temporary file then it searches the registry to locate the path for TEMP OLK folder. If the Path is not found then it automatically creates the registry and folder along with random name.

By default OLK hidden folder path: C:\Documents and Settings\\Local Settings\Temporary Internet Files\OLKxxx

Note:

  • username: Name of currently log-in user
  • xxx: Randomly generated number & letter sequence

Conclusion:

This article discuss OLK file extension, common errors in OLK File, How to extract the OLK folder files and describe a note to find the hidden OLK folder. It is very hard to find the OLK folder. But by finding the file location, it can be easy to make several changes in an attachment. Before saving the file if your PC crashes, then the file can be found in the Outlook Temporary OLK folder. Also the recovered file can be found at discussed location.