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Summary: The article discusses the importance of a mandatory Exchange 2016 database for user mailboxes during an upgrade. Some users have concerns about performance and data loss. It offers solutions, including creating a new database, adding resources to the Exchange server, and using repair tools like Kernel for Exchange Server Recovery. The tool is recommended for its data recovery capabilities, including EDB to PST conversion, Office 365 support, and data integrity preservation. A free trial is available, making it a reliable solution for addressing Exchange 2016 database errors and mailbox issues.

As an integral component of the Exchange 2016 upgrade, the implementation of a new mandatory database becomes imperative for all user mailboxes. This newly introduced database serves as the repository for critical information essential to the seamless operation of the upgraded mail system.

Anticipation is building among numerous users who are eagerly looking forward to the exciting new features and enhancements that Exchange 2016 has to offer. However, there is a contrasting sentiment among some, as they approach the installation of the new database with apprehension. Their concerns revolve around potential performance degradation and even the risk of data loss. On occasion, when attempting to access the Exchange 2016 database within a user mailbox, an error message may be encountered, stating: “Exchange 2016 database is mandatory on usermailbox.”

Exchange 2016 database is mandatory on usermailbox

Fix “Exchange 2016 database is mandatory on usermailbox” error

If you encounter the “Exchange 2016 database is mandatory on usermailbox” error when attempting to access your Exchange 2016 mailbox, rest assured that there are several potential causes and corresponding solutions to explore. Below, we present a range of remedies you can consider:

Use a dedicated Exchange database availability group (DAG)

One potential root cause could be the configuration of your Exchange 2016 server, specifically if it’s set up to utilize a dedicated Exchange Database Availability Group (DAG). To resolve this issue, it’s essential to initiate the creation of a fresh mailbox database within the DAG and subsequently migrate your mailbox to this newly created database. To do this, follow these steps:

  1. On your Exchange 2016 server, open the Exchange Management Shell.
  2. Type the following command and press Enter:
  3. New-MailboxDatabase -Name -Server -EdbFilePath -LogFolderPath
  4. Type the following command and press Enter:
  5. Move-Mailbox -Identity -TargetDatabase

Once the mailbox has been moved, you can delete the old mailbox database. Moreover, you can also reset exchange mailbox password for an added layer of security.

Create a new mailbox on Exchange 2016 Server

Another possible cause is that you do not have an Exchange 2016 mailbox. In this case, you will need to create a new mailbox on an Exchange 2016 server. If you receive the error “Exchange 2016 database is mandatory on usermailbox” while trying to create a new mailbox in Exchange 2016, it means that you have not yet created an Exchange 2016 database. To do so, follow these steps:

  1. Open the Exchange Management Shell. Run the following command:
  2. New-MailboxDatabase -Name -Server
  3. Once the database has been created, you can then create your mailbox by running the following command:
  4. New-Mailbox -Name -Database
  5. Once all of the mailboxes have been created, you will need to mount the database. You can do this by using the following command:
  6. Mount-Database

Finally, you will need to set the permissions on the database so that the users can access it. After this, you should now be able to access your mailbox. If you have any further issues, please contact your Exchange administrator.

Add more resources to Exchange Server

A potential underlying factor for this problem could be insufficient resources on your Exchange server, which may hinder its capacity to accommodate additional databases. Furthermore, when your Exchange Server experiences resource shortages, it can manifest in the form of an error message such as “Exchange 2016 database is mandatory on usermailbox.”

This means that the Exchange server requires a database in order to function properly. You can either add more resources to your Exchange Server or optimize your Exchange Server to make better use of the resources you have. With the right resources in place, you can resolve the “Exchange 2016 database is mandatory on usermailbox” error and get back to using your Exchange Server as normal. If you’re not sure how to do this, you can contact your Exchange experts or Microsoft Support for help.

Use Exchange Recovery tools

An alternative approach involves utilizing Exchange repair tools to rectify any errors or warnings that could be triggering the database’s corruption flag. In the event you encounter errors, you will need to address each one individually through troubleshooting to effectively resolve the underlying issue.

To simplify your situation, we offer the ultimate solution. Look no further than Kernel for Exchange Server; a highly acclaimed Exchange Server recovery software designed to address the “Exchange 2016 database is mandatory on usermailbox” issue. This exceptional tool excels in transforming corrupted or damaged EDB files into Outlook PST files. By using it, users gain effortless access to their Exchange account data within MS Outlook.

Exchange Server Recovery

In addition to PST files, this software provides robust support for retrieving data from EDB to Office 365 and Live Exchange Server. One of its standout advantages lies in its unwavering commitment to preserving data integrity and accuracy throughout the entire recovery and conversion process. Furthermore, you can effortlessly export your offline global address list from Outlook using this versatile tool. To top it off, a free trial version is available, allowing you to thoroughly assess the software’s capabilities before making a purchase.

Final say

If you encounter the “Exchange 2016 database is mandatory on usermailbox” error, it’s crucial to address it promptly before proceeding. The encouraging aspect is that resolving this problem is straightforward, and we provide a comprehensive set of steps to assist you in doing so. Alternatively, you can efficiently resolve this issue by utilizing a reputable third-party solution such as Kernel for Exchange Server Recovery.

This software has been meticulously crafted to swiftly recover and restore corrupted Exchange databases or retrieve deleted Exchange server databases within mere minutes. It extends its support to all versions of MS Exchange Server, providing users with seamless and expeditious recovery solutions. If you find yourself in need of an efficient remedy for addressing Exchange 2016 database errors or rectifying user mailbox issues, don’t hesitate to acquire its trial version today and witness its effectiveness firsthand!

Kernel for Exchange Server