Deletes all instances of Microsoft's GDID and prevents minting of new ones

A PowerShell tool called deGDID removes Microsoft's Global Device Identifier (GDID)—a server-assigned tracking identifier that Windows can install on machines even with local accounts—and prevents new instances from being created. The tool is designed for personal, unmanaged Windows systems and works by blocking the DeviceAdd path through hosts file entries and firewall rules. A 2026 court case revealed Microsoft had linked GDID to user URLs, timestamps, and IP addresses, prompting the creation of this hardening utility.