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

every time i start thunderbird i get an error message to reboot my computer to complete upgrade

  • 8 odgovori
  • 2 ima ovaj problem
  • 43 views
  • Posljednji odgovor poslao rkrmr

more options

just installed Thunderbird on a new laptop ( a Dell) every time i try to start T bird an error message comes up saying your computer must be restarted to complete a previous upgrade of T bird do you want to reboot now? , this is the first install, the same message comes up when i try to uninstall T bird. restarted computer 5 or 6 times,

Another question installed T bird on a desk top windows 10 (an H P )every time T bird is started an error message pops up to turn off cookies on your browser cookies are not shut off the only thing turned off is don't except third party cookies and delete all cookies on shut down

just installed Thunderbird on a new laptop ( a Dell) every time i try to start T bird an error message comes up saying your computer must be restarted to complete a previous upgrade of T bird do you want to reboot now? , this is the first install, the same message comes up when i try to uninstall T bird. restarted computer 5 or 6 times, Another question installed T bird on a desk top windows 10 (an H P )every time T bird is started an error message pops up to turn off cookies on your browser cookies are not shut off the only thing turned off is don't except third party cookies and delete all cookies on shut down

Izabrano rješenje

Clearly something has gone wrong with install. re: the same message comes up when i try to uninstall T bird.

I'm assuming you are using a Windows OS as you have not mentioned what you are using. Thunderbird would have installed here: If 64 bit computer:

  • C:\Program Files (86)\Mozilla Thunderbird\

If 32 bit computer:

  • C:\Program Files\Mozilla Thunderbird\

Locate and delete the 'Mozilla Thunderbird' folder. Then empty the Recycling bin.

Download and install a fresh version from this link, choosing the preferred language and correct OS for your computer. https://www.thunderbird.net/en-US/thunderbird/all/

Pročitajte ovaj odgovor sa objašnjenjem 👍 1

All Replies (8)

more options

Odabrano rješenje

Clearly something has gone wrong with install. re: the same message comes up when i try to uninstall T bird.

I'm assuming you are using a Windows OS as you have not mentioned what you are using. Thunderbird would have installed here: If 64 bit computer:

  • C:\Program Files (86)\Mozilla Thunderbird\

If 32 bit computer:

  • C:\Program Files\Mozilla Thunderbird\

Locate and delete the 'Mozilla Thunderbird' folder. Then empty the Recycling bin.

Download and install a fresh version from this link, choosing the preferred language and correct OS for your computer. https://www.thunderbird.net/en-US/thunderbird/all/

more options

yes this is a windows 10 os uninstalled T bird and deleted from recycle bin downloaded new version tried to install it got the same message to restart computer. T bird is not listed in program files (64 or 32bit) would there be something left in the registry if so how can it be removed what would i look for

more options

using Kaspersky? There is someone else on this forum with the same general installer issue and it appears to be related to kaspersky forcing updates.

more options

not using kaspersky,using mcafee for now that came with this laptop just had this two weeks now, guess will go with A V G

more options

did manage to reinstall T bird on lap top it works now


On second question it should read error message pops up to turn on cookies on your browser not off.cookies are turned on except third party cookies

more options

Cookies in Thunderbird. Due to being forced to use oauth for some mail providers for authentication, cookies in Thunderbird have to be turned on. oAuth authentication is a browser security that certain providers are forcing into mail clients.

Setting is in options > privacy

more options

Hi rkrmr, Could you please give more detailed description on how did you manage to reinstall Tbird? I am struggling with the same problem.

more options

Hi Ppawel mb first i had to uninstall everything to do with t bird there was T bird and Mozilla maintenance service Toad-hall above tells how to do it .or go to the control panel >programs > uninstall programs then find Mozilla Thunderbird(x86) and delete then download new copy of Tbird and reinstall https://www.thunderbird.net/en-US/thunderbird/all/