Visual Studio 2005 debugger is launched upon closing browser while viewing website




11 years ago
9 years ago


(Reporter: josejr39, Unassigned)


3.0 Branch
Windows XP

Firefox Tracking Flags

(Not tracked)


(Whiteboard: [CLOSEME 2010-07-30], URL)



11 years ago
User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a8) Gecko/2007091216 GranParadiso/3.0a8
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9a8) Gecko/2007091216 GranParadiso/3.0a8

When I visit the website and close Firefox the Visual Studio 2005 (VC8) debugger is launched. The debugger states "An unhandleld win32 exception occurred in firefox.exe [2668].". When I tell it to debug it brings me to Visual Studio 2005 and a pop up says "Unhandled exception at 0x7c918fea in firefox.exe: 0xC0000005: Access violation writing location 0x00000010". Afterwards it brings me to a locked file named free.c and breaks in line 115.

Reproducible: Always

Steps to Reproduce:
1. Visit
2. Close Firefox
Actual Results:  
The Visual Studio 2005 debugger is launched.

Expected Results:  
Not have the Visual Studio debugger launch (because there is no unhandled error).

Comment 1

11 years ago
When I had visual studio installed I would randomly get the visual studio 2005 debugger dialog popup. It would not always happen on any particular page. It seemed random. I now have visual studio un-installed and now I get this error message box popup whenever I close a firefox window:

An unhandled win32 exception occurred in firefox.exe [2408]. Just-In-Time debugging this exception failed with the following error: No installed debugger has Just-In-Time debugging enabled. In Visual Studio, Just-In-Time debugging can be enabled from Tools/Options/Debugging/Just-In-Time.

Visual studio is not even installed. Why is it looking for visual studio debugger?
Jose: Can you send in a Breakpad crash report (see with a current trunk build and write down the Breakpad ID in the bug here?
Does this still happen in firefox 3.6.6 or later in a fresh profile?
Whiteboard: [CLOSEME 2010-07-30]
Version: unspecified → 3.0 Branch
No reply, INCOMPLETE. Please retest with Firefox 3.6.8 or later and a new profile ( If you continue to see this issue with the newest firefox and a new profile, then please comment on this bug.
Last Resolved: 9 years ago
Resolution: --- → INCOMPLETE

Comment 5

9 years ago
Don't see this problem anymore. please close this bug. Using 3.5 something. This was orignally posted in 2007. Kind of slow in responding I would say.
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