Fix Windows 10 Activation Failed Error Code 0x803F7001 I show you a quick workaround for this annoying error.
1. Click Start / Settings / Update & security / Activation / Change the product key then enter the new product key then click Next to Activate Warning: please make sure you use the right product key for your windows edition or it won’t work.
2. Enter the Windows 10 Default Product Key.
Win 10 Home: YTMG3-N6DKC-DKB77-7M9GH-8HVX7
Win 10 Pro: VK7JG-NPHTM-C97JM-9MPGT-3V66T
Win 10 Home N: 4CPRK-NM3K3-X6XXQ-RXX86-WXCHW
Win 10 Home Single Language: BT79Q-G7N6G-PGBYW-4YWX6-6F4BT
Win 10 Home Country Specific: 7B6NC-V3438-TRQG7-8TCCX-H6DDY
Win 10 Professional N: 2B87N-8KFHP-DKV6R-Y2C8J-PKCKT
3. It will probably fail to activate but don’t worry.
4. Click Start / Settings / Update & security / Activation / Change the product key then enter the new product key then click Next to Activate
5. Enter the Windows 7, Windows 8 or Windows 10 Product Key