Microsoft fixes 2022 bug that crashes Exchange mail servers

Microsoft fixes “2022 bug” that crashes Exchange mail servers

Microsoft started 2022 with a flashback of the 2000 errors. Due to a bug in the FIP-FS module, which protects e-mails from spam and malware, the operation of the Microsoft Exchange mail server was interrupted on January 1, 2022. It has now been announced that the developers have released an interim fix to address this issue.

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The problem with mail servers arose because the value of the current date is stored in a 32-bit Int32 variable with a maximum value of 2,147,483,647. According to the logic of the program, the dates in 2022 start with a value of 2 201 010 001, which is greater than the maximum allowable value. This leads to a crash and emails are not delivered to the intended recipients. The problem affects Exchange Server 2016 and Exchange Server 2019. It is not possible to fix this problem yourself, but disabling the FIP-FS scanner restores the e-mail functionality, but increases the risks associated with receiving it of spam and potentially malicious software.

The released patch includes using PowerShell to stop two services, replace several antivirus engine files that use the new numeric sequence, and restart operations. Troubleshooting requires manual command entry and can be time consuming in large organizations. Microsoft is reportedly working on a patch for automatic distribution and installation.

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Robbie Elmers

Robbie Elmers is a staff writer for Tech News Space, covering software, applications and services.

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