I think the import wizard fails if you select 'everything', but works if you import mail and address books separately. Failing that, it might work better with an older version of TB such as v. 24.

Another option for the mail is to use MailStore. Contacts can also be saved as vCards in Outlook and imported to TB.

https://support.mozilla.org/en-US/questions/1218201

Thanks for your time; but that is the same answer we keep hearing for years now. when will the import wizard be fixed. and notice that I've installed the 64 bit version.

If you like, you can post questions on bugzilla about the progress of this issue, as it is more likely to get the attention of TB developers.

Note that the x64 version is not yet officially supported, and is probably less refined than the x86 version.