Microsoft announced that they are ending support for OneDrive Desktop application (sync client) on macOS Sierra 10.12 and macOS High Sierra 10.13 starting from 11 September 2021. Only the three most recent versions of macOS will be supported. When a new major version of macOS is released, they will support the new version and the previous two versions.
To ensure a smooth transition, please upgrade your machines to macOS Mojave 10.14 or above. For the best user experience and longest support lifecycle, it is recommended by Microsoft to upgrade to macOS Big Sur 11.0 or above.
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