Event viewer system log not updating
Windows Defender will revert back to the last known-good engine and a platform update will be attempted.Windows Defender will soon require a newer platform version to support future versions of the antimalware engine.Download the latest Windows Defender platform to maintain the best level of protection available. The Windows Defender client encountered an error when using the Dynamic Signature Service to download the latest definitions to a specific threat.This error can occur when the client encounters an error while trying to load the definitions, or if the file is corrupt.
Windows Defender will attempt to revert back to a known-good set of definitions.
Windows Defender AV records event IDs in the Windows event log.
Event viewer system log not updating comments