Microsoft Exchange Y2K22 Bug

Microsoft Exchange Y2K22 bug According to numerous reports from Microsoft Exchange admins worldwide, a bug in the FIP- FS engine is blocking email delivery with on-premise servers starting at midnight on January 1st, 2022. Security researcher and Exchange admin Joseph Roosen said that this is caused by Microsoft using a signed int32 variable to store the value of a date, which has a maximum value of 2,147,483,647. However, dates in 2022 have a minimum value of 2,201,010,001 or larger, which is greater than the maximum value that can be stored in the signed int32 variable, causing the scanning engine to fail and not release mail for delivery.

A screenshot-style news post explains the Microsoft Exchange Y2K22 bug, in which a signed int32 date value overflowed and caused the FIP-FS scanning engine to stop releasing email for delivery starting on January 1, 2022. The joke references the classic Y2K software bug and is shared as a reaction to programmers mishandling dates, especially when a calendar date changes and systems suddenly break. EN: A screenshot-style news post explains the Microsoft Exchange Y2K22 bug, in which a signed int32 date value overflowed and caused the FIP-FS scanning engine to stop releasing email for delivery starting on January 1, 2022. The joke references the classic Y2K software bug and is shared as a reaction to programmers mishandling dates, especially when a calendar date changes and systems suddenly break.

• @ithueti / 5403 2022-01-02