Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: Firefox is not responding Windows 7 ApphangB1

21 Jan 2012   #1

Windows 7 Ultimate x32
Firefox is not responding Windows 7 ApphangB1


Around once a week, Firefox freezes (sometimes when I'm away and sometimes when I'm using it) and Windows returns an ApphangB1 error on my laptop. I also occasionally see an ApphangB1 error when using Word and Explorer. Any thoughts? Thanks!

Memory dump (136MB):

System info:
Manufacturer Dell Inc.
Model XPS M1330
Total amount of system memory 4.00 GB RAM
System type 32-bit operating system
Number of processor cores 2
64-bit capable Yes

Processor Intel(R) Core(TM)2 Duo CPU T8100 @ 2.10GHz 5.6 3.1
Memory (RAM) 4.00 GB
Graphics Mobile Intel(R) 965 Express Chipset Family
Windows 7 Ultimate

A problem caused this program to stop interacting with Windows.

Problem signature:
Problem Event Name: AppHangB1
Application Name: firefox.exe
Application Version:
Application Timestamp: 4ef15e74
Hang Signature: c1af
Hang Type: 0
OS Version: 6.1.7601.
Locale ID: 1033
Additional Hang Signature 1: c1af38ef43f07b8322cb7bf9b61ad04f
Additional Hang Signature 2: 9d22
Additional Hang Signature 3: 9d22fe617582c9a09b65d46ab91db94d
Additional Hang Signature 4: c1af
Additional Hang Signature 5: c1af38ef43f07b8322cb7bf9b61ad04f
Additional Hang Signature 6: 9d22
Additional Hang Signature 7: 9d22fe617582c9a09b65d46ab91db94d

My System SpecsSystem Spec
21 Jan 2012   #2

Win 7 Ultimate 64-bit. SP1.

Hello there,

* Have you tried uninstalling & reinstalling Firefox?

* Are you running the lastest version of Firefox?

* Are your Extensions & Plug ins up to date?

* Have you tested Firefox in safe mode?
Safe Mode - MozillaZine Knowledge Base

* Have you tried making a new profile & seeing if the problem still exists?
Creating a new Firefox profile on Windows - MozillaZine Knowledge Base

* FYI...
Firefox hangs - MozillaZine Knowledge Base

Problematic extensions - MozillaZine Knowledge Base
My System SpecsSystem Spec

 Firefox is not responding Windows 7 ApphangB1

Thread Tools

Similar help and support threads
Thread Forum
AppHangB1 - error outlook 2010 does not responding
Problem signature Problem Event Name: AppHangB1 Application Name: OUTLOOK.EXE Application Version: 14.0.4760.1000 I got this error only for outlook 2010 in Office Pro when i try to send email.My outlook freezes and does not responding. I disable plug-ins and i boot in safe mode and still...
Microsoft Office
Help - FireFox Has Stopped Responding (I don't have FireFox installed)
Hi guys, I wasn't sure where to post this. Intermittently (every 2-3 days) when I start up my computer I constantly get a pop up stating that Firefox has stopped responding. The trouble is I don't even have Firefox installed. As a diagnostic step I downloaded and installed Firefox then used Revo...
General Discussion
Firefox not running after latest update, error AppHangB1
Hello, 2 days ago I uninstalled Microsoft Security Essentials from my pc. Yesterday I update my Firefox from v. 14.0.1 to v.15.0, since then firefox won't run on this pc. I tried downgrading it to version 14 but it wont work. Here's the error msg: ...
Browsers & Mail
Firefox not responding
Hi, not sure if this is in the right place on the forum but I seem to be having a problem with the latest level of Firefox 6.0.2 which I recently was advised to upgrade to where it freezes frequently (not responding) and I don't seem to recall this problem with previous levels, only since this...
Browsers & Mail
my Firefox not responding
some time i get firefox not responding idk why that and it take to much in start up idk why i have amd phonem quad core X 4 965 black and my ram is 2 GB and usbale is 1.75 AND THANKS
Browsers & Mail

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 06:17.
Twitter Facebook Google+ Seven Forums iOS App Seven Forums Android App