Windows Defender Exclusion Bulk Cleanup Guide
When the Windows Defender exclusion list accumulates a large number of useless entries, you can clean them all at once with a PowerShell one-liner. This article details the entire process, including backup, cleanup, and verification. Prerequisites Modifying Defender configuration requires administrator privileges. Open a terminal with sufficient permissions as follows: Click the Windows Start menu and search for PowerShell Right-click Windows PowerShell in the search results, then select Run as administrator Click Yes in the User Account Control (UAC) window to confirm authorization Step 1: Backup Existing Exclusions (Highly Recommended) Before cleaning, it is recommended to back up the current exclusion list to prevent accidentally deleting entries you want to keep. If needed later, you can restore from the backup file.
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