Problem: When you try to use Windows Update or update Windows Defender to check for and install updates, you receive one of the following error messages:
Windows Defender error code 0x80072efd
Windows Updateerror code 80072efd
1. Click the "Start" Button, click "All programs", and click "Accessories". 2. Right-click “Command Prompt” Run as administrator". If you are prompted for an administrator password or confirmation, type the password or provide confirmation. 3. Type "netsh winhttp
reset proxy" (without quotes) at the command prompt, and press Enter. 4. Try the update again.
Alvise C. Microsoft® MVP Windows Insider - Blogger on angolodiwindows.com - Google Certified - Comptia Security + Certified
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