DIAGSESSION Types

Leading DIAGSESSION Type

.DIAGSESSION

File Name:	.diagsession
Class:	Diagnostics Session File

The file extension is associated with the Internet Explorer (a Windows web browser), or Microsoft Visual Studio(an IDE for Windows). A DIAGSESSION file basically stores diagnostics data for a debug session which enables developers to troubleshoot computer problems such as performance or memory issues.

Company:	Microsoft Corporation
Division:	Developer Files
Location:	HKEY_CLASSES_ROOT\.diagsession

Software Programs That Open The Diagnostics Session File:

Internet Explorer by Microsoft Corporation

Windows

Mac

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Understanding DIAGSESSION Issues

Typical DIAGSESSION Opening Challenges

Internet Explorer Not Present

Double-clicking your DIAGSESSION file prompts the message "%%os%% Can't Open DIAGSESSION File". Customarily, this means that Internet Explorer is not installed on %%os%%. You won't be able to double-click to open your DIAGSESSION because your OS doesn't know what to do with it.

Tip: Another DIAGSESSION-related program can be selected to open the file by clicking "Show Apps" and finding the application.

Internet Explorer is Out-of-Date

Occasionally, you might have an outdated version of Internet Explorer installed that's incompatible with your Diagnostics Session File type. Installing the latest version of Internet Explorer from Microsoft Corporation is recommended. Your Diagnostics Session File file was probably created by a newer release of Internet Explorer than what's currently installed your computer.

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

Ultimately, most of the difficulties opening DIAGSESSION files are due to having the wrong version of Internet Explorer installed.

More Causes of Problems Opening DIAGSESSIONs

Assuming you have the right Internet Explorer version installed, other problems can prevent you from opening DIAGSESSION files. If you are continuing to have errors with loading DIAGSESSION files, other external issues might be to blame. Issues that aren't software-related:

• Invalid DIAGSESSION file references in the Windows Registry (the "phonebook" of the Windows Operating System)
• Deletion of the DIAGSESSION file description from the Registry by mistake
• Invalid installation of a DIAGSESSION-associated program (eg. Internet Explorer)
• File corruption affecting your DIAGSESSION file
• Your DIAGSESSION has adversely impacted by malware
• Hardware related to DIAGSESSIONs has device driver corruption
• Your computer does not have the adequate system resources to open the Diagnostics Session File format