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I am updating computers from Windows 10 to 11 on new PC, how do I transfer all my emails?

Peter Thompson

I am upgrading from my old HP computer running Windows 10 (not window 11 compatible) to a new Lenovo PC running windows 11. How can I transfer all my emails and email files to the new computer sothat I do not lose them?

I am upgrading from my old HP computer running Windows 10 (not window 11 compatible) to a new Lenovo PC running windows 11. How can I transfer all my emails and email files to the new computer sothat I do not lose them?

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  1. ensure thunderbird is NOT running on old machine
  2. enter %appdata% in search window on task bar and press Enter key
  3. this should open windows file explorer in Appdata\roaming folder
  4. highlight the Thunderbird folder and copy to external media
  5. ensure thunderbird is installed on second computer, started once and NOT running
  6. enter %appdata% in search window on task bar and press Enter key
  7. you should be in Appdata\roaming folder. DELETE the thunderbird folder there
  8. now , paste your copied thunderbird folder there.
  9. start thunderbird and all should be there

Hi David, I did backup my files from the old computer, but for some reason it turned out to be unnecessary. Once I had downloaded Thunderbird to me new Lenovo Windows 11 computer and opened the program my old emails and files stared to load themselves? I guess this must be something to do with syncing my BT accounts? But thanks for your help anyway.

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