Windows update doesn't work, it just keeps on checking for updates then later on have an error code 80072F78 that has something to do with correct time and date synchronization. My time and date is sync correctly with regards to my location. The error in Event viewer states: "NtpClient was unable to set a manual peer to use as a time source because of DNS resolution error on ''. NtpClient will try again in 3473457 minutes and double the reattempt interval thereafter. The error was: No such host is known. (0x80072AF9)" see attachment for the actual error in WU. Thanks in advance for helping.