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APPLIES TO: 
2013 2016 2019 Subscription Edition 
SharePoint in Microsoft 365
Rule Name: Databases require upgrade or not supported.
Summary: The databases require upgrade because their versions are earlier than the backward-compatible range, or the databases are not supported because their versions are later than the current version of SharePoint Server.
Cause: Versions of databases are earlier than the backward-compatible range, or are later than the current version of SharePoint Server.
Resolution: Upgrade databases to SQL Server 2014.
- See the following resource for information about how to upgrade databases: Upgrade SQL Server.