Mailbox has been temp moved

There are two users in the organization
one user is windows 10 and office 365 - he cannot open his Outlook 2016.. he is getting this error " your mailbox has been temporarily moved...." (pic 1 ) . deleted the profile and added another one .. it seems to work.. but when i close outlook and go back in .. it is giving the same error. also repaired office 2016. still no luck . any ideas?
second user has windows 10 and office 2016 - he also had the above same error and when i deleted his profile and added another one. getting this error while setting  his mailbox -- "log onto exchange activesync mail server ....... cannot be found " (pic 2 ). i cannot setup his mailbox again.
any ideas as how to resolve this issue.
we host our exchange server 2010.
pic1pic2.docx
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o0JoeCool0oAsked:
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Anurag Apps4RentConnect With a Mentor Commented:
Copy below mentioned text as-is in notepad and save the file with .reg extension. Do not save it as text file but as .reg. Now double click the file, it will prompt for registry changes, click on Yes. For your ease, the .reg file is attached and you can use this file.

Note: Investigation so far reveals that this issue is specific to Windows 10 machine and users who login to desktops via Office 365 service (authenticating against “Connected to Azure AD).  When users login into desktop using Office 365 or Azure AD service, Windows 10 forces MS Outlook to connect to Office 365 mail services automatically.

Below is registry text:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System]
"NoConnectedUser"=dword:00000001

[HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\AutoDiscover]
"ExcludeExplicitO365Endpoint"=dword:00000001
Outlook.reg
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MaheshArchitectCommented:
try to remove cached mode and check from outlook setting

OR

rename ost file and start outlook and let it built new ost file
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o0JoeCool0oAuthor Commented:
yes did the above with no help. renamed the ost file and could start outlook with a new ost file.. again after closing outlook and opening it... had the same error.
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Making Bulk Changes to Active Directory

Watch this video to see how easy it is to make mass changes to Active Directory from an external text file without using complicated scripts.

 
MaheshArchitectCommented:
move affected user mailbox from one server / database to another database and check
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o0JoeCool0oAuthor Commented:
there is only database
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Anurag Apps4RentCommented:
Follow below steps.

Sign out from Outlook and close it.
Create below mentioned registry entries.


HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\AutoDiscover
DWORD32: ExcludeExplicitO365Endpoint
Value=1

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System
NoConnectedUser

Restart the laptop/desktop.
Create new outlook profile.
Sign in to outlook again.
After entering password and clicking on OK, you will prompted to add the account to windows. Skip this option.
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o0JoeCool0oAuthor Commented:
how to create the below mentioned registry values in a proper way. one system is using office 365 and the other user is using office standalone product.

HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\AutoDiscover
DWORD32: ExcludeExplicitO365Endpoint
Value=1

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System
NoConnectedUser
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o0JoeCool0oAuthor Commented:
Thanks a  lot !! Anurag Apps4Rent . your fix helped out this user.

my another issue is with a non domain laptop .. he is on another subdomain .... This user has windows 10 and office 2016 - he also had the above same error (pic 1 ) and when i deleted his profile and added another one. getting this error while setting  his mailbox -- "log onto exchange activesync mail server ....... cannot be found " (pic attached again - outlook 2 error  ). i cannot setup his mailbox again or add it again.
any ideas as how to resolve this issue.
Outlook-2.JPG
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