Thunderbird G5 is not just incompatible, it will not install on NVDA 2026 Beta 1.

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Richard Wells

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Feb 7, 2026, 10:57:31 PM (11 days ago) Feb 7
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I would really like to see this one updated soon for Beta testing. Here
is the message I get when I attempt to install it. "Failed to install
add-on from C:\Users\Richard
Wells\NVDA\userConfig\addonStore\_dl\thunderbirdPlusG5-2601.09.00.nvda-addon"


joseph....@gmail.com

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Feb 8, 2026, 12:57:44 AM (10 days ago) Feb 8
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Hi,
Cause: the installation routine for this add-on uses a code path that was removed in NVDA 2026.1. This is one of the cases where replacing the code path should be sufficient to get the add-on working.
Cheers,
Jsoeph
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