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No comment has been added to this question in more than 21 days, so it is now classified as abandoned.<br />
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I have recommended this question be closed as follows:<br />
<br />
Accept: Adam Brown (<a href="https:#a42112842" rel="ugc">https:#a42112842</a>)<br />
<br />
If you feel this question should be closed differently, post an objection and the moderators will review all objections and close it as they feel fit. If no one objects, this question will be closed automatically the way described above.<br />
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seth2740<br />
Experts-Exchange Cleanup Volunteer
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No comment has been added to this question in more than 21 days, so it is now classified as abandoned.

I have recommended this question be closed as follows:

Accept: Adam Brown (https:#a42112842 [https:#a42112842])

If you feel this question should be closed differently, post an objection and the moderators will review all objections and close it as they feel fit. If no one objects, this question will be closed automatically the way described above.

seth2740
Experts-Exchange Cleanup Volunteer

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Hello,<br />
<br />
I installed a new Exchange 2016, before we had a 2013 server exchange, it died ... I cleaned the AD with ADSI and I installed a successful Exchange 2016 server,<br />
<br />
Here is the error I receive for users who were on the old exchange server.<br />
<br />
Thanks<br />
<br />
<br />
WARNING: The object lablab.com/Users/ABCD &nbsp;has been corrupted or isn't compatible with Microsoft support<br />
requirements, and it's in an inconsistent state. The following validation errors happened:<br />
WARNING: Database is mandatory on UserMailbox.<br />
WARNING: Database is mandatory on UserMailbox.
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Hello,

I installed a new Exchange 2016, before we had a 2013 server exchange, it died ... I cleaned the AD with ADSI and I installed a successful Exchange 2016 server,

Here is the error I receive for users who were on the old exchange server.

Thanks


WARNING: The object lablab.com/Users/ABCD  has been corrupted or isn't compatible with Microsoft support
requirements, and it's in an inconsistent state. The following validation errors happened:
WARNING: Database is mandatory on UserMailbox.
WARNING: Database is mandatory on UserMailbox.

WARNING: Database is mandatory on UserMailbox. exchange 2016

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

Databases are organized collections of data, most commonly accessed through management systems including schemas, tables, queries and processes that allow users to enter and manipulate the information or utilize it in other fashions, such as with web applications or for reporting purposes.