I'm running 60.3.3 (32-bit) on 64-bit Windows 8.1. According to Tool > Options > Advanced > Update
this is the latest 32-bit version.
Spelling using English (UK), or indeed any other language, just will not work as I write an email.
During composition, Options > Check Spelling
displays no dictionary.
From the main Mozilla interface, Tools > Options > Spelling
shows no listed dictionaries and when I select Download More Dictionaries
, all "English (GB) Language Pack" versions state "This add-on is not compatible with your version of Thunderbird." (including older versions).
If I choose the Add-Ons
version for "British English Dictionary (Marco Pinto) v2.70", this claims to be compatible and after installation (either automatically or using the manual method), the dictionary is listed as an Add-on.
Why is this not working?
C:\Users\USER\AppData\Roaming\Thunderbird\Profiles
.C:\Program Files (x86)\Mozilla Thunderbird
and ofC:\Users\USER\AppData\Local\Thunderbird
. You may also take a backup image of the system disk, if you like. And, yes, you are right to be nervous, because nothing is guaranteed. I hope that by copying the profile you won't be propagating the problem.