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

Search Support

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.

Learn More

This thread was archived. Please ask a new question if you need help.

How do I correct an install and start problem

jjrobbins27012
jjrobbins27012
more options

I am running Windows 7. I installed Firefox without difficulty. All other running software including ZoneAlarm were turned off. When I tried to start Firefox I got the error message "Couldn't load XRE functions" and was unable to start the program. I uninstalled Firefox, rebooted my computer and reinstalled the software. Experienced the same problem. Any suggestions.

I am running Windows 7. I installed Firefox without difficulty. All other running software including ZoneAlarm were turned off. When I tried to start Firefox I got the error message "Couldn't load XRE functions" and was unable to start the program. I uninstalled Firefox, rebooted my computer and reinstalled the software. Experienced the same problem. Any suggestions.

Chosen solution

This is likely caused by Zone Alarm. Please try the instructions to turn off virtualization in the following support question http://support.mozilla.com/en-US/questions/880170

Read this answer in context 👍 0

All Replies (2)

rstrong
rstrong
more options

Chosen Solution

This is likely caused by Zone Alarm. Please try the instructions to turn off virtualization in the following support question http://support.mozilla.com/en-US/questions/880170

jjrobbins27012
jjrobbins27012 Question owner
more options

Suggestion to turn off ZoneAlarm Virtual Browser was the answer. Firefox is working well. Thanks for your help