Incorrect system time can cause security handshake failures. If possible, use the in Recovery Mode to set the correct date manually. Apple Support Community Advanced Solutions
: Wi-Fi in Recovery Mode can be unstable. If possible, use an Ethernet cable activate mac failed to create activation request
You have just wiped your Intel-based Mac (MacBook Pro, MacBook Air, iMac, Mac mini, or Mac Pro) to sell it, give it away, or perform a clean installation of macOS. You boot up, connect to Wi-Fi, and step through the setup assistant. Then, just as you reach the “Activate Mac” screen—a hurdle you never expected—you see it: Incorrect system time can cause security handshake failures
to ensure "iOS Device Activation" (which also affects Macs) is green. Time and Date Sync If possible, use an Ethernet cable You have
Short author note (optional)
Unstable Wi-Fi, restrictive firewalls, or VPNs preventing the Mac from reaching Apple's servers.
Incorrect system time can cause security handshake failures. If possible, use the in Recovery Mode to set the correct date manually. Apple Support Community Advanced Solutions
: Wi-Fi in Recovery Mode can be unstable. If possible, use an Ethernet cable
You have just wiped your Intel-based Mac (MacBook Pro, MacBook Air, iMac, Mac mini, or Mac Pro) to sell it, give it away, or perform a clean installation of macOS. You boot up, connect to Wi-Fi, and step through the setup assistant. Then, just as you reach the “Activate Mac” screen—a hurdle you never expected—you see it:
to ensure "iOS Device Activation" (which also affects Macs) is green. Time and Date Sync
Short author note (optional)
Unstable Wi-Fi, restrictive firewalls, or VPNs preventing the Mac from reaching Apple's servers.