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BugZero found this defect 539 days ago.
This article documents how to unhide the Reason tab in the Restore Wizard after the "Do not show me this page again" option has been checked, causing the Reason tab to no longer appear during future restores.
The "Do not show me this page again" setting and other user-specific UI preferences are stored in the user.config files stored in: %localappdata%\Veeam_Software_Group_GmbH Each application will have a subfolder containing a version number, and within that will be the user.config file.
Related Article KB4487: How to Remove Servers From Veeam Backup & Replication Console Launcher