Types of WEF Files

Primary WEF File Association

.WEF

File Name:	.wef
Class:	Microsoft Exchange File System Format

The WEF extension is related to Microsoft Exchange software, which is a calendaring and mail suit created by Microsoft. WEF format saves the workflow process, properties, and common script out in File System Format which will make it suitable to transfer files to people who don't have access to the exchange server.

Organization:	Microsoft Corporation
Class:	Data Files
Folder:	HKEY_CLASSES_ROOT\.wef

Software Programs That Open The Microsoft Exchange File System Format:

Microsoft Exchange Server by Microsoft Corporation

Windows

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WEF Troubleshooting

Typical WEF Opening Challenges

Missing Microsoft Exchange Server

You attempt to load your WEF file and get an error such as "%%os%% Can't Open The WEF File Extension". When this happens, it is commonly due to Microsoft Exchange Server missing in %%os%%. The typical path of opening your WEF with a double-click won't work because %%os%% cannot make the program connection.

Tip: If you have another software that you know opens WEF files, you can select it by hitting the "Show Apps" button.

Microsoft Exchange Server is Out-of-Date

In other instances, your Microsoft Exchange File System Format file version may not be supported by your version of Microsoft Exchange Server. Visit the Microsoft Corporation website to download (or purchase) the latest version of Microsoft Exchange Server. The primary cause of this problem is that your Microsoft Exchange File System Format file was created by a different (newer) version of Microsoft Exchange Server than what's installed.

Tip: Sometimes you can get a clue about the version of WEF file you have by right clicking on the file, then clicking on "Properties" (Windows) or "Get Info" (Mac OSX).

Summary: In either case, the majority of problems opening WEF files are related to not having the correct software application installed on your computer.

Associated Difficulties Loading WEF Files

Assuming you have the right Microsoft Exchange Server version installed, other problems can prevent you from opening WEF files. If you are continuing to have errors with loading WEF files, other external issues might be to blame. These issues include:

• Windows Registry WEF file paths that are incorrect
• Deletion of the WEF file description from the Registry by mistake
• Partial installation of Microsoft Exchange Server that did not fully complete
• The WEF itself is corrupted
• The WEF is infected with a virus
• WEF-related hardware has device drivers that obsolete
• Windows has inadequate resources to open your Microsoft Exchange File System Format file