The time provider NtpClient cannot reach or is currently receiving invalid time data from %1.

Typically, a Network Time Protocol (NTP) package is returned when the local NTP sends a request to the time service. The package is then verified.

The time provider NTPclient did not receive a reply from the time service, or the reply was not valid because the NTP package failed the verification sequence. The time provider NTPclient will try eight times to contact the time service and then log a W32time Event ID 47 event.

Do one or all of the following:

• Verify that the time source is available.
• Verify that the time service does not support symmetric mode.
• Verify that the request is not being sent to a third party. Some third parties might not return a package, or they might return a package that does not follow the NTP protocol and is therefore marked as invalid.
• Choose a different time source.