office 2016 remove repeated activation

 this fix is for VLC activation:

Close the activation window and all Office apps.

Open regedit (using run or type it at the start menu)

It is always very important to make backup of registry or the registry key you are changing or deleting first.(use export under file menu)

navigate to:

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Office\16.0\Common\OEM

Edit>Delete.

Do the same with this key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\16.0\Common\OEM

Close the Registry Editor and start Office again.

 

resources:

https://support.office.com/en-us/article/Office-repeatedly-prompts-you-to-activate-on-a-new-PC-a9a6b05f-f6ce-4d1f-8d49-eb5007b64ba1

 

Exchange 2016 user mailbox export

using exchange powershell command:

New-MailboxExportRequest -Mailbox UserName -FilePath “\\server\export\username.pst”

windows 10 system recovery drive remove drive letter

 From elevated command prompt:

diskpart

list volume

In my case the drive letter for the system partition was D

select volume D

remove letter=D

Close Command Prompt and restart your PC