Thank you for reaching out on RePost!
I understand that the error is specific to your Amazon Workspaces and the upgrade notification appears despite the WorkDocs client being installed at the latest version(as opposed to WorkDocs Sync client which is set to deprecate on October 15 2022). This could be a result of residual registry keys or directories/files from a previous installation of the WorkDocs Sync application.
In order for us to troubleshoot further, we will need to perform a review of the installed applications and related registry keys on impacted Workpaces. For this, please feel free to open a support case with AWS using this link This will help us request the correct set of logs and review your Workspaces to diagnose the issue better.
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