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.

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

Mozilla not opening/taking too long to open

  • 2 replies
  • 1 has this problem
  • 11 views
  • Last reply by FredMcD

more options

I have Windows 10. Yesterday had a problem with Windows Explorer (was using 75%+ CPU) but it's now fixed. Tried to open Mozilla now and it won't start. Although, it opens after 3-5 minutes. I can see the process in the Task Manager, I've tried running it on safe mode and open the Profile Manager but it won't open too. Also tried to reinstall but didn't work too.

I have Windows 10. Yesterday had a problem with Windows Explorer (was using 75%+ CPU) but it's now fixed. Tried to open Mozilla now and it won't start. Although, it opens after 3-5 minutes. I can see the process in the Task Manager, I've tried running it on safe mode and open the Profile Manager but it won't open too. Also tried to reinstall but didn't work too.

Chosen solution

That was very good work. Well done. Please flag your last post as Solved Problem so others will know.

Further information can be found in the Troubleshoot Firefox issues caused by malware article.

Run most or all of the listed malware scanners. Each works differently. If one program misses something, another may pick it up.

Read this answer in context 👍 0

All Replies (2)

more options

Seems like the problem was my computer was infected. Used an anti-malware system and it got rid of the malwares. All working fine now.

more options

Chosen Solution

That was very good work. Well done. Please flag your last post as Solved Problem so others will know.

Further information can be found in the Troubleshoot Firefox issues caused by malware article.

Run most or all of the listed malware scanners. Each works differently. If one program misses something, another may pick it up.