I have just had to install thunderbird on a new PC, and the email setup system is causing serious crash errors (red boxes with lots of text and Stack Overflow programming bugs (the actual thing not the website) ). I want to try installing an older version of Thunderbird, specifically 78.13.0
You would first have to install Thunderbird to two different locations. You can then use the Profile Manager, i.e. C:\Program Files\Mozilla Thunderbird\thunderbird.exe" -p for each instance to create and select the profile you want to use.
In theory, you could store the profile directory in the same location as the installation directory if you really wanted to. You might be better off just creating two shortcuts to the same installation, which use different profiles, by using "C:\Program Files\Mozilla Thunderbird\thunderbird.exe" -P "Default User" for instance.
With version 60, Gecko started using the CLDR project for localization, including datetime formatting, which uses different settings than most other software based purely on LC_TIME. There is a bug report for this issue that includes workarounds with varying effects. To achieve ISO-8601-formatted dates in Thunderbird and a week beginning on Monday, use LC_TIME=lt_LT thunderbird.
Note: Versions mentioned in the description apply only to the upstream thunderbird package and not the thunderbird package as distributed by Oracle.See How to fix? for Oracle:8 relevant fixed versions and status.
Note: Versions mentioned in the description apply only to the upstream thunderbird package and not the thunderbird package as distributed by Oracle.See How to fix? for Oracle:9 relevant fixed versions and status.
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