Fiddler Classic 5.0.20245.10105 crashes on startup

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Fiddler Classic Windows
David
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David asked on 10 Jan 2025, 03:46 PM | edited on 10 Jan 2025, 04:01 PM

I recently upgraded to the latest version of Fiddler Classic and the application no longer starts up.  It crashes silently (no error message pop-up) and the Fiddler window is never displayed. 

Running on Windows 10. 

The Windows Application Log shows the following:

Faulting application name: Fiddler.exe, version: 5.0.20245.10105, time stamp: 0x670fd121
Faulting module name: KERNELBASE.dll, version: 10.0.19041.5198, time stamp: 0xd1eefc71
Exception code: 0xc06d007e
Fault offset: 0x000000000003b699
Faulting process id: 0x3e54
Faulting application start time: 0x01db636fee33f9f3
Faulting application path: C:\Users\XXXXX\AppData\Local\Programs\Fiddler\Fiddler.exe
Faulting module path: C:\Windows\System32\KERNELBASE.dll
Report Id: 8bf8de2d-211a-4462-93da-34efc27e8337
Faulting package full name: 
Faulting package-relative application ID: 

I have tried uninstalling and re-installing but the results are the same.

Any ideas for how this can be fixed?  Thanks.

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Nick Iliev
Telerik team
answered on 13 Jan 2025, 11:42 AM

Hello David,

 

Could you provide more details about your version of Windows 10? We are currently unable to replicate the issue using Windows 10 H22 or newer versions. Additionally, you may want to try the solution suggested in the following Microsoft post: https://learn.microsoft.com/en-us/answers/questions/1180906/geeting-error-while-running-custom-service-faultin.

 

Regards,
Nick Iliev
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Nick Iliev
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