This is supported by the wikipedia page for Windows Update:
"Critical Update Notification Utility (initially Critical Update Notification Tool) is a background process that checks the Windows Update web site on a regular schedule for new updates that have been marked as "Critical". It was released shortly after Windows 98."
Unfortunately, the citation for that is no longer active on MS's site, and the archive.org version no longer works either.
"Critical Update Notification Utility (initially Critical Update Notification Tool) is a background process that checks the Windows Update web site on a regular schedule for new updates that have been marked as "Critical". It was released shortly after Windows 98."
Unfortunately, the citation for that is no longer active on MS's site, and the archive.org version no longer works either.