Syncthing 1.27.1 and Windows 7

Warning: Updated Syncthing v1.27.1 crashes when launched on Windows 7.

This is due to Go 1.21, which dropped support for Windows 7.

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Go 1.20 is the last release that will run on any release of Windows 7, 8, Server 2008 and Server 2012. Go 1.21 will require at least Windows 10 or Server 2016.

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Go 1.20 Release Notes

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If you want to continue using Syncthing on Windows 7, disable autoupdate in the config.xml file (change the value to 0):

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        <autoUpgradeIntervalH>0</autoUpgradeIntervalH>

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And downgrade to v1.27.0 (rename syncthing.exe.old to syncthing.exe)