File Extension Search

.diagpkg File Extension

Developer: Microsoft
File type: Troubleshooting Pack File
You're here because you have a file that has a file extension ending in .diagpkg. Files with the file extension .diagpkg can only be launched by certain applications. It's possible that .diagpkg files are data files rather than documents or media, which means they're not meant to be viewed at all.

what is a .diagpkg file?

One system file format used by Microsoft Windows-based computers for the WTP Wizard applet bundled with these platforms is also called the troubleshooting pack file format. These files are stored in the DIAGPKG format and implemented with encoding specifications and standards proprietary to Microsoft. The "WTP" in the WTP Wizard applet stands for Windows Troubleshooting Platform, and this application is bundled with Microsoft Windows-based systems. Also known as the Microsoft Support Diagnostic Tool, the WTP Wizard applet to provide assistance to users for finding, troubleshooting and resolving issues and problems present in the Microsoft Windows-based computer. These issues can be problems with hardware devices connected to the computer and problems encountered by applications installed in the system. The "DIAGPKG" in the DIAGPKG file format stands for diagnostic packages, since genuine .diagpkg copies used to troubleshoot and resolve certain hardware and software problems can be posted by its creators for download. Users should check the digital signatures integrated into the DIAGPKG file to ensure its authenticity.

how to open a .diagpkg file?

Launch a .diagpkg file, or any other file on your PC, by double-clicking it. If your file associations are set up correctly, the application that's meant to open your .diagpkg file will open it. It's possible you may need to download or purchase the correct application. It's also possible that you have the correct application on your PC, but .diagpkg files aren't yet associated with it. In this case, when you try to open a .diagpkg file, you can tell Windows which application is the correct one for that file. From then on, opening a  .diagpkg file will open the correct application. Click here to fix .diagpkg file association errors

applications that open a .diagpkg file

Microsoft Support Diagnostic Tool

Microsoft Support Diagnostic Tool

Microsoft Support Diagnostic Tool or the so called WTP Wizard software collects data that can be used by Microsoft Support for troubleshooting your computer problem, an ActiveX Control that can enhance user’s support experience and make it easier for the user to submit a support incident. It also gathers diagnostic information, such as system information, registry settings, files, and similar data from your computer and uploads this information to the support engineer over a secure channel. This information can be utilized to analyze the problem that the users are having on your computer. To gather this system information, the Microsoft Support Diagnostic Tool downloads tools onto your computer if they do not already exist. A troubleshooting set cabinet file is saved in the DIAGCAB format, and this file format is categorized as a system file developed by Microsoft. The WTP Wizard and these DIAGCAB files are utilized by the Microsoft Windows OS for troubleshooting and resolving issues associated to hardware resources connected to the computer as well as to installed software resources that have came across freezes and crashes among other initialization and performance problems.

a word of warning

Be careful not to rename the extension on .diagpkg files, or any other files. This will not change the file type. Only special conversion software can change a file from one file type to another.

what is a file extension?

A file extension is the set of three or four characters at the end of a filename; in this case, .diagpkg. File extensions tell you what type of file it is, and tell Windows what programs can open it. Windows often associates a default program to each file extension, so that when you double-click the file, the program launches automatically. When that program is no longer on your PC, you can sometimes get an error when you try to open the associated file.

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