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Upgraded Computer - 32bit to 64bit file structure different, how to I export/import?

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  • Last reply by sfhowes

martyn13
martyn13
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Hi,

I have a very old 32bit computer with Windows 10 which has Thunderbird profile located in C:\Users\mbc0\AppData\Local\Mozilla Thunderbird

The new computer Windows 11 64bit has the profile stored in C:\Users\mbc0\AppData\Local\Thunderbird

The file structure also looks completely different, how do I move all my email/address books etc to the new installation please?

Hi, I have a very old 32bit computer with Windows 10 which has Thunderbird profile located in C:\Users\mbc0\AppData\Local\Mozilla Thunderbird The new computer Windows 11 64bit has the profile stored in C:\Users\mbc0\AppData\Local\Thunderbird The file structure also looks completely different, how do I move all my email/address books etc to the new installation please?

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sfhowes
sfhowes
  • Top 10 Contributor
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You can ignore ...AppData\Local, as the relevant data are in ...AppData\Roaming. With TB closed, copy the Thunderbird folder from Roaming on the source PC to Roaming on the target PC. It will work best if the TB version is the same on both computers, but it doesn't matter if the source TB is 32-bit and the target TB is 32 or 64-bit.

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