Important Notice: We're experiencing email notification issues. If you've posted a question in the community forums recently, please check your profile manually for responses while we're working to fix this.

On Monday the 3rd of March, around 5pm UTC (9am PT) users may experience a brief period of downtime while one of our underlying services is under maintenance.

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

Thunderbird won't run after Firefox update

  • 2
  • 1 nwere nsogbu anwere nsogbu a
  • 28 views
  • Nzaghachi ikpeazụ nke Archie

more options

After Firefox update to version 74.0 (64 bit) attempting to open Thunderbird results in "Your Thunderbird profile cannot be loaded. It may be missing or inaccessible".

After Firefox update to version 74.0 (64 bit) attempting to open Thunderbird results in "Your Thunderbird profile cannot be loaded. It may be missing or inaccessible".

All Replies (2)

more options

Interesting, does it continue if you do a re install?

more options

Hi Matt, I assume you refer to a reinstall of Firefox? If so how does this help Thunderbird recover profiles?

NB I have found Thunderbird profiles - if these a re the missing ones - what to do next.

I have been using both Thunderbird and Firefox for many years and never encountered such a problem.

Best regards Graham