Microsoft fixed a Y2K-style bug that broke Exchange email
 

Microsoft is starting 2022 with a flashback to Y2K bugs. Bleeping Computerreports the company has released a temporary fix for a bug that broke email delivery for on-premises Exchange 2016 and 2019 servers on New Year's Day. As users discovered, Exchange was trying to store version date checks for its antivirus scanning engine in a 32-bit integer variable — a big problem when any date from January 1st, 2022 onward was too large. Any new checks made the malware engine crash and left email stuck in a queue.

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