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I'm sure that was the patch.

The current patch actually just changed the number of days allowed in December, to give the team time to patch it properly. The date reported is December 33rd, 2021.

Source?

Another tale to tell your grandkids when they ask about those weird dates...?

> The version of the updated scan engine starts with 2112330001; is this right? Should we be concerned that it seems to reference a date that does not exist?

> The newly updated scanning engine is fully supported by Microsoft. While we need to work on this sequence longer term, the scanning engine version was not rolled back, rather it was rolled forward into this new sequence. The scanning engine will continue to receive updates in this new sequence.[0]

[0] https://techcommunity.microsoft.com/t5/exchange-team-blog/em...

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