Kinds of OLK Files

Chief OLK Description

.OLK

File ID:	.olk
Category:	Outlook Address Book File

The OLK file is an address book created by Microsoft Outlook. The OLK file may contain contact information for people and organizations. The OLK file can store names, phone numbers, addresses, titles, organization data, and other contact information. The OLK file is used for saving and loading contacts.

Developer:	Microsoft Corporation
Division:	Data Files
Folder:	HKEY_CLASSES_ROOT\.olk

Software Programs That Open The Outlook Address Book File:

Microsoft Word by Microsoft Corporation

Windows

Mac

Microsoft Outlook 2016 by Microsoft Corporation

	Windows
	Windows Phone

iOS

Android

OS X El Capitan

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Understanding OLK Issues

Common OLK Opening Problems

Microsoft Word Not Present

If you attempt to load your OLK file, you experience a message such as "Can't Open OLK Files". Generally, this is experienced in %%os%% because Microsoft Word isn't installed on your PC. The typical path of opening your OLK with a double-click won't work because %%os%% cannot make the program connection.

Tip: If you know of another program that can open your OLK file, you can try opening it by selecting the application from the programs listed.

Microsoft Word Requires Update

In other instances, your Outlook Address Book File file version may not be supported by your version of Microsoft Word. Download the latest Microsoft Word version from the Microsoft Corporation website to ensure you have the correct one installed. This problem is predominately due to having a Outlook Address Book File file version that was created by a newer version of Microsoft Word than what you have installed on your PC.

Tip: Investigate your OLK file by right-clicking and selecting "Properties" to find clues on what version you need.

Summary: Not having the right Microsoft Word version on your computer can cause problems opening OLK files.

Additional OLK Opening Issues

Even with the correct version of Microsoft Word installed, you can still experience difficulties opening OLKs. If you are continuing to have errors with loading OLK files, other external issues might be to blame. Issues that aren't software-related:

• OLK file references in the Windows Registry are broken
• Unintentional removal of the description of the OLK file inside the Windows Registry
• Corrupt install of Microsoft Word or other OLK-related program
• OLK file corruption
• OLK file integrity has been compromised by malware
• Hardware associated with OLK has outdated drivers
• Insufficient system resources to successfully open Outlook Address Book File files