"Unable to verify MacOS" when upgrading to Monterey

Solution 1:

Got same error here, i think that this line matters: Oct 26 12:26:09 Aayushs-MacBook-Pro osinstallersetupd[965]: Personalization summary: 20G165 -> 21A559 (Customer), global = 0, variant = multiple, client = osinstallersetupd, user auth = 0, tdm = 0, prod fused = 1, model = j132ap, bridge = 18.16.14759.0.1,0, session = 1377012F-B0D8-4061-8C5A-23057FB93DCE: Error Domain=OSPErrorDomain Code=201 "An error occurred during personalization." UserInfo={NSLocalizedDescription=An error occurred during personalization., NSUnderlyingError=0x7fe18798ab70 {Error Domain=AuthInstallErrorDomain Code=14 "(null)"}} I think it's due to you're in a VPN network or sth that makes apple think that you're in a different country? I solved it by turning off my VPN agent.