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Crashing when downloading/uploading file window opens *Solved*

  • 3 replies
  • 3 have this problem
  • 14 views
  • Last reply by FredMcD

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Every time I attempt to upload or download a file to or from Firefox, it crashes. I believe the problem began when I downloaded MS Office 2016 which happened to coincide with when I downloaded the latest FF version.

Things I have done: -Updated to latest Java (as per suggests in similar questions)

-Updated to latest Adobe Flash (as per suggests in similar questions)

-Repaired MS Office 2016

-Uninstalled MS Office 2010 (which was already installed when I installed '16)

-Adjusted file settings to NOT automatically expand (as per suggests in similar questions)

-Restarted Firefox with add ons disabled (as per suggests in similar questions)

-Restarted Computer in Safemode to replicate problem (with networking) (as per suggests in similar questions)

-Reset Firefox user settings

-Downloaded CCleaner, Cleaned Firefox.

-Uninstalled and Reinstalled Firefox (twice) (deleted lingering user files the second time) (which subsequently wiped out my crash reports, I will edit this later when I replicate crash and have a citeable crash report).


The problem still persists.

The problem does not seem to affect Internet Explorer. The problem does not exist on my laptop Firefox (which can upload/download files just fine, laptop does not have MS Office Installed).

Link to the crash report: https://crash-stats.mozilla.com/report/index/67fe5107-1905-4490-8f47-2b44c2160518

In the crashing thread portion, one file that appears in red over again is something called "msoshext.dll".

Every time I attempt to upload or download a file to or from Firefox, it crashes. I believe the problem began when I downloaded MS Office 2016 which happened to coincide with when I downloaded the latest FF version. Things I have done: -Updated to latest Java (as per suggests in similar questions) -Updated to latest Adobe Flash (as per suggests in similar questions) -Repaired MS Office 2016 -Uninstalled MS Office 2010 (which was already installed when I installed '16) -Adjusted file settings to NOT automatically expand (as per suggests in similar questions) -Restarted Firefox with add ons disabled (as per suggests in similar questions) -Restarted Computer in Safemode to replicate problem (with networking) (as per suggests in similar questions) -Reset Firefox user settings -Downloaded CCleaner, Cleaned Firefox. -Uninstalled and Reinstalled Firefox (twice) (deleted lingering user files the second time) (which subsequently wiped out my crash reports, I will edit this later when I replicate crash and have a citeable crash report). The problem still persists. The problem does not seem to affect Internet Explorer. The problem does not exist on my laptop Firefox (which can upload/download files just fine, laptop does not have MS Office Installed). Link to the crash report: https://crash-stats.mozilla.com/report/index/67fe5107-1905-4490-8f47-2b44c2160518 In the crashing thread portion, one file that appears in red over again is something called "msoshext.dll".

Modified by dhpn

Chosen solution

http://www.freefixer.com/library/file/msoshext.dll-103665/ msoshext.dll's description is "Microsoft Office Shell Extension Handlers"


dhpn said

-Repaired MS Office 2016 -Uninstalled MS Office 2010 (which was already installed when I installed '16)

I would suspect a conflict between the older version of Office and the newer version, where some of the older version files didn't get removed and now there is a conflict that affects Firefox alone.

I think you should uninstall MS Office 2016 using Revo Uninstaller Professional - Free Version and get a fresh start with Office. And if REVO shows the older MS Office 2010 version as "hanging around", make sure you clean that one out, too. There maybe Registry strings that didn't get cleared when MS Office 2010 was uninstalled.

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Chosen Solution

http://www.freefixer.com/library/file/msoshext.dll-103665/ msoshext.dll's description is "Microsoft Office Shell Extension Handlers"


dhpn said

-Repaired MS Office 2016 -Uninstalled MS Office 2010 (which was already installed when I installed '16)

I would suspect a conflict between the older version of Office and the newer version, where some of the older version files didn't get removed and now there is a conflict that affects Firefox alone.

I think you should uninstall MS Office 2016 using Revo Uninstaller Professional - Free Version and get a fresh start with Office. And if REVO shows the older MS Office 2010 version as "hanging around", make sure you clean that one out, too. There maybe Registry strings that didn't get cleared when MS Office 2010 was uninstalled.

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I feel silly because I thought "well, how the heck am I going to download it if firefox keeps crashing during downloads?". It took me half a day to realize/remember I still had a functioning MS Internet Explorer. Thank you, this really made a difference.


However, upon re-downloading MS Office 2016, uploading still crashes firefox. It looks like I will either have to track down MS office 2013 or wait it out and see if future updates will solve the problem.

Final Edit on the issue: Uninstalled Office 16 again. Firefox worked properly. I went to find a download for 13 when I realized I had been mindlessly downloading the 32 bit download instead of the 64 bit download. Silly me, problem solved. I have MS Office 13 installed and I am able to download/upload files again.

Modified by dhpn

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Separate Security Issue: Update your Adobe Reader Version 2015.016.20039 Note: Other Software is offered in the download.