Files with wer extension can be found as some kind of error log reports generated by certain versions of Microsoft Windows.

There is one other file type using
the WER file extension!

empty icon.wer - WinSQL E/R diagram

Detailed description

Software that open wer file

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WER file extension - Microsoft Windows application error report

What is wer file? How to open wer files?

File type specification:

Various data file type icon Various data file type

Text file type icon Text file type

wer file icon: wer filetype icon

File extension wer is used for temporary report files generated in Microsoft Windows and Windows Mobile operating system, created with Microsoft Winqual service.

A .wer file contains crash report data in text form, stores list of errors, information about crashes for applications and operating system.

These files can be removed with the Disk Cleanup function (right-click the drive icon in Windows Explorer and select Properties → Tools tab.

Updated: August 2, 2022

The default software associated to open wer file:

Microsoft Windows icon

Microsoft Corporation logoMicrosoft Windows  Microsoft Windows software

Company or developer:
Microsoft Corporation

A family of operating systems developed by the Microsoft Corp. The first Windows was released in 1985 as a GUI add-on to MS-DOS. MS-DOS based Windows versions were developed to 2000, when was released the last version called Windows ME. Windows based on NT core started in 1993. Windows NT family are developed to these days, the latest version is called Microsoft Windows 11.

Windows Mobile icon

Microsoft Corporation logoWindows Mobile  Windows Mobile/CE software

Company or developer:
Microsoft Corporation

Microsoft Windows Mobile is operating system based on Microsoft Windows CE kernel and is intended for smart phones, Pocket PCs, GPS navigation devices etc.

Windows Mobile was introduced in 2000 and in 2010 was replaced by Windows Phone 7 operating system. The basic applications installed in WM are Internet Explorer Mobile, Microsoft Office Mobile, Windows Media Player for WM etc.

Windows Mobile is able to sharing Internet to other computers or mobile devices and supports multitasking. Other applications are available in Windows Marketplace for Mobile or downloadable on the Internet. They are three editions of Windows Mobile: Professional, Standard, Classic.

It was replaced by Windows Phone platform.

Help how to open:

The .wer files can be viewed in any text editor.

How to convert:

It does not seem likely that a conversion for this type of error logs is doable or even useful. But you can work with them much like any othe text files.

List of software applications associated to the .wer file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open wer file, edit wer file, convert wer file, view wer file, play wer file etc. (if exist software for corresponding action in's database).

Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting wer files.

Software that open wer file - Microsoft Windows application error report

Programs supporting the exension wer on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for open wer file action.

Apple macOS / Mac OS X:

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