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OLK File Extension

The OLK file extension was created by Microsoft and is also known as the Outlook Address Book File. OLK is classified as a Data Files and This File type categories under Zip, Text, Binary and XML, however, the format of this file format has not been determined yet. You can open OLK files in Microsoft Outlook program.

Outlook Address Book File Type

Outlook Address Book File Type
Extension .olk
Developer Microsoft
Popularity 3.0 (16 Votes)
Mime Type mime-type/not.available
Default Program Microsoft Outlook
Category Data Files
Format Binary
Updated 7/1/2025

What is a OLK File Type?

The OLK files can be opened manually by typing the command Outlook.exe / l olk _ filename in Outlook 2003. OLK files can also be opened by Microsoft Word 2003 and used to merge e-mails with d' other document operations.

Outlook contacts are stored in the form of personal addresses (.PAB) files.

Free Online OLK Tools & Apps

Access powerful and secure free online OLK tools to convert, view, edit, merge, split, and compare OLK files — all without installing any software. Our tools support the .OLK (Outlook Address Book File) file extension and run smoothly in any modern browser.

Select a tool below to explore features and manage your OLK files directly from your device with ease.

OLK Files Common Issues

There are few common issues with the Outlook Address Book File .OLK File Extensions while opening the .OLK files on Windows and MacOs, we have solution to those issues such as:

Can't Open OLK Files?

  1. You must have supported software programs installed for Outlook Address Book File on your system such as Microsoft Outlook.
  2. Associate default Microsoft Microsoft Outlook program for *.olk (Outlook Address Book File) files.

    Associate OLK Default Program on Windows
    1. Right-click a *.OLK (e.g example.olk) file and click Open With.
    2. In the Open with dialog box, click Microsoft Microsoft Outlook program Or click Browse to locate the program (*.exe) that you want.
    3. Select check box for Always use this app to open .olk files.

    Associate OLK Default Program on MacOs
    1. Click *.OLK (e.g example.olk) file and click information -> Open With.
    2. In the programs list, click Microsoft Microsoft Outlook program Or other appropriate program that you want.
    3. Confirm Change for all... and Contine.
    4. A message will appear "This change will be applied to all files with .Microsoft Outlook extension. By clicking Continue you confirm your selection", click Contine to apply changes.

All Platform Software Programs for OLK File Extension

List of all softwares that can open the OLK files on each platforms such as Windows, Mac, iOS, Linux, Web and Android, you may click the each software link for more details for other supported formats for each software and the verified direct download links for each software with complete lisensing details.

Microsoft Windows logo image Open OLK File on Windows

Software License Developer
Microsoft Office image. Microsoft Office 2019 for Windows Commercial Microsoft
Microsoft Outlook image. Microsoft Outlook 365 for Windows Commercial Microsoft
Microsoft Word image. Microsoft Word 365 for Windows Commercial Microsoft

MacOs logo image - FileProInfo.comOpen OLK File on Mac OS

Software License Developer
Microsoft Office image. Microsoft Office 2019 for MacOs Commercial Microsoft
Microsoft Outlook image. Microsoft Outlook 365 for MacOs Commercial Microsoft
Microsoft Outlook 365 image. Microsoft Outlook 365 000 for MacOs Free+ Microsoft
Microsoft Word image. Microsoft Word 365 for MacOs Commercial Microsoft

Linux logo image - FileProInfo.comOpen OLK file on Linux

Software License Developer

Website logo image - FileProInfo.comOpen OLK file on Web

Software License Developer

iOS logo image - FileProInfo.comOpen OLK file on iOS

Software License Developer

Android logo image - FileProInfo.comOpen OLK file on Android

Software License Developer

About Licensing

  1. Free Trial This software are often used for an attempt period, like 14 days, before requiring payment. Some trial versions have a reduced feature set.
  2. Free This software is liberal to use. Examples include open-source , freeware software, like free programs supported by advertising.
  3. Free+ This software is liberal to download and use, but contains in-app purchases (IAP) to unlock additional content or functionality.
  4. Paid This software must be purchased so as to use it. it's going to be offered as a perpetual license or ongoing subscription.
  5. Included with OS This software is bundled with an OS , like Windows, macOS, or Android.

OLK file extension icon image.About OLK - Outlook Address Book File

FileProInfo is to help you understand about the Outlook Address Book File with *.OLK suffix, and provide the complete detail as how to open, edit, convert, merge, split and compare it with other related software programs, software download links and free online apps and tools.

Our professional team members at FileProInfo have been individually researched and verified the details for OLK. We want to be 100% accurate and publish the information about file formats, tools, apps and software programs that we have tested and validated.

If you would like to suggest any additions or updates to this page for OLK, please let us know.

Updated 7/1/2025