- Windows 7
- Windows 8
- Windows 10
- Windows Server 2008 R2
Please note that while the 32-bit and 64-bit versions of Windows can be used to run Thunderbird, only 32-bit builds of Thunderbird are supported at this time.
Note that as of Thunderbird 53, Thunderbird only supports Windows 7, 8, 10, and Windows Server 2008 R2.