Originally published on cert-depot.com . Free, open-source self-signed certificate generator — no signup, keys never stored. How to Trust a Self-Signed Certificate on Windows Add your certificate to the Windows Trusted Root store — the GUI and PowerShell ways. Windows maintains certificate stores for both the current user and the local machine. For a certificate to be trusted system-wide, install it into Local Machine › Trusted Root Certification Authorities . Method 1: Double-click (easiest) Rename your certificate to .crt if it's .pem (Windows recognizes both, but .crt triggers the install dialog on double-click). Double-click the file. The Certificate dialog opens. Click Install Certificate… . Select Local Machine (requires admin confirmation). Click Next. Choose Place all certificates in the following store , then Browse . Select Trusted Root Certification Authorities , click OK, then Next, then Finish. Confirm the security warning dialog.…