question

raminsa-6505 avatar image
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raminsa-6505 asked KyleXu-MSFT commented

all mail disapear

Hi dear expert

after install kb5001779 all inbox,sent and... mail in some user mailbox disappear

please give me hand to fix issue

Tank you in advance

office-exchange-server-administration
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ManuPhilip avatar image
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ManuPhilip answered

Check the missing emails from outlook are appeared in other mail clients (owa, mobile etc.). If so, try recreating the profile in outlook and check the missing mails are back

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KyleXu-MSFT avatar image
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KyleXu-MSFT answered KyleXu-MSFT commented

@raminsa-6505

First, there doesn't exist any feedback about that this KB will cause email missing. It isn't an issue that caused by this Security Update,

Use command below to check whether there exist emails in this mailbox Inbox and Sent Items:

 Get-MailboxFolderStatistics User1 | ft Identity,FolderAndSubfolderSize

88955-qa-kyle-13-40-56.png

If emails exist in this mailbox, you can try to check from OWA or create a new profile. You can also use New-MailboxExportRequest to export emails from this mailbox.

If there real doesn't exist emails in this mailbox inbox, try to check whether there exist emails in "Deletions" or "Purges", if there exist emails in those folders, it means those email was delete by mistake. You can follow this picture below to recover those emails:
88971-qa-kyle-14-00-11.png

If there doesn't exist emails in those folders, you will cannot find and recover those emails.


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@raminsa-6505
I am writing here to confirm with you any update about this thread now?
If the above suggestion helps, please be free to mark it as an answer for helping more people.

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