Recovery Items root 無法刪除

將信箱從2010搬去2016時卡住，很神奇的它有Recovery Items 1085671個

Get-MailboxFolderStatistics -Identity cch\169102 | ft name,itemsinfolder -AutoSize












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工具
https://mfcmapi.codeplex.com/


將recovery Item顯示出來
http://hasslauer.com/blog/?p=245

2010信箱搬移至2016時，OUTLOOK OWA都無法連線

因為有些帳號是從20年前從exchange5.5轉過來，一直linked的舊的樹系

但從EXCHANGE 2000 2003 2007 2010 轉換都沒問題，現在到2016就不行了

也許是用mapi https關係吧..


Set-User -Identity 4781122 -LinkedMasterAccount $null

設成NULL就正常了

get-mailbox -OrganizationalUnit "ou=Dc=cdd,dc=com,dc=tw" -resultsize unlimited -RecipientTypeDetails LinkedMailbox | Set-User -LinkedMasterAccount $null

2010信箱搬移至2013/2016時，OUTLOOK無法連線

將從2010信箱搬移至2016時，有時用OUTLOOK 201X信箱會無法連線，autodiscvoer打完密碼後無法継續下個步驟就停住了，但OWA郤可以正常進入

在每一台2016上執行，Restart-WebAppPool MSExchangeAutodiscoverAppPool，重設過等個五分鐘就正常了



http://www.admin-enclave.com/en/articles/exchange/266-troubleshooting-connection-issues-from-users-migrated-from-exchange-2010-to-exchange-2013-2016.html

Solution 02:

As written in KB 3097392 the MSExchangeAutodiscoverAppPool needs to be restarted on the affected Exchange 2016 server (keep noted if you have a cluster you need to perform that on all of them)

Restart-WebAppPool MSExchangeAutodiscoverAppPool

You might wish to run that on a periodic state (e.g. every 30min). If you wish to do that check the follow URL.