Join the Mozilla’s Test Days event from Dec 2–8 to test the new Firefox address bar on Firefox Beta 134 and get a chance to win Mozilla swag vouchers! 🎁

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

Hierdie gesprek is in die argief. Vra asseblief 'n nuwe vraag as jy hulp nodig het.

Thunderbird not responding

  • 3 antwoorde
  • 1 het hierdie probleem
  • 4 views
  • Laaste antwoord deur christ1

more options

Since some upgrade of W10 and then W11 even the last version of Thunderbird shows "not responding" when download e-mails, irrespective of the e-mail address. From "resource monitor" when looking for the origin of the freezing the threads responsible point to ucrtbase.dll Even sending the e-mail is excruciating slow. Any suggestion? Thanks in advance Francesco

Since some upgrade of W10 and then W11 even the last version of Thunderbird shows "not responding" when download e-mails, irrespective of the e-mail address. From "resource monitor" when looking for the origin of the freezing the threads responsible point to ucrtbase.dll Even sending the e-mail is excruciating slow. Any suggestion? Thanks in advance Francesco

All Replies (3)

more options

What is your antivirus software?

more options

Try to start Windows 10 in safe mode with networking enabled.

Does the problem go away?

Windows safe mode disables anti-virus software. This is a troubleshooting step, not a solution.