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

Lolu chungechunge lwabekwa kunqolobane. Uyacelwa ubuze umbuzo omusha uma udinga usizo.

0xffffffff error

  • 2 uphendule
  • 1 inale nkinga
  • 11 views
  • Igcine ukuphendulwa ngu molough

more options

I am using Windows 2000 with a version of thunderbird 3.1.20 which has run perfect for a long time until I got the following error and crash:

Instruction at 0x77fcb0c8 Reference memory at 0xffffffff

This only applies when opening thunderbird.

Can you please assist me with a fix for this?

Many Thanks Martin

I am using Windows 2000 with a version of thunderbird 3.1.20 which has run perfect for a long time until I got the following error and crash: Instruction at 0x77fcb0c8 Reference memory at 0xffffffff This only applies when opening thunderbird. Can you please assist me with a fix for this? Many Thanks Martin

All Replies (2)

more options

That sort of error is often caused by anti virus programs or add-ons. However neither Windows 2000 or Thunderbird 3 are still supported, so I really think you might need to update both.

more options

Thanks Matt. On that particular machine I have some old specialised software which won't work if I update the operating system. Might see if there is anyway around this problem regarding the anti virus progs or add-on's. It has worked fine for years until now!! Thanks again