This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Caută ajutor

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Află mai multe

Acest fir de discuție a fost arhivat. Adresează o întrebare nouă dacă ai nevoie de ajutor.

The exception illegal instruction

  • 3 răspunsuri
  • 2 au această problemă
  • 1 vizualizare
  • Ultimul răspuns de ecirs

Brandle
Brandle
more options

We have had FireFox as a published Citrix app for our users for years. As of Friday (10/13/17) users started getting an application error upon startup - The exception Illegal Instruction. FireFox is installed on two of our Citrix servers (2008 R2) and cannot run locally, as admin, in safe mode, and after refresh.

Currently running up to date version 56.0.1 (64bit). No updates or changes to the servers or Windows have occurred prior to FireFox error. I cannot find anyone else on the web having this issue either.

We have had FireFox as a published Citrix app for our users for years. As of Friday (10/13/17) users started getting an application error upon startup - The exception Illegal Instruction. FireFox is installed on two of our Citrix servers (2008 R2) and cannot run locally, as admin, in safe mode, and after refresh. Currently running up to date version 56.0.1 (64bit). No updates or changes to the servers or Windows have occurred prior to FireFox error. I cannot find anyone else on the web having this issue either.

Toate răspunsurile (3)

Brandle
Brandle Deținătorul întrebării
more options

For some reason I couldn't upload the screenshot of the error the first time. Here it is:

ecirs
ecirs
more options

I have the same issue with Firefox on Citrix, seems to have started with ver 56.0.1. Happens on all 6 Citrix servers in the farm. Can find nothing in Application or System logs. No crash reports either.

Citrix XenApp 6.0 running on Server 2008 R2 Standard. 64-bit Firefox, now on 56.0.2.

My organization prioritizes security so downgrading to an earlier version is not an option.

Modificat în de ecirs

ecirs
ecirs
more options

Happy112 with the solution here:

https://support.mozilla.org/en-US/questions/1180385#answer-1021637

Follow that article to the linked Citrix article and disable XenApp API hooks for firefox.exe.