Sign in with Microsoft
Sign in or create an account.
Select a different account.
You have multiple accounts
Choose the account you want to sign in with.


Assume that the is_media_read_only column value is '1' for a data file in sys.database_files and sys.master_files in SQL Server 2016 or 2017. The column indicates that the underlying media hosting the data file is read-only. The is_media_read_only value remains unchanged even though the media is no longer read-only. Restoring or attaching the database that the file belongs to still may not change the column value. Because of this issue, some operations will fail including enabling TDE on the database. You may receive an error message that resembles the following:

Msg 33118, Level 16, State 2, Line LineNumber

Cannot enable or modify database encryption on a database that is read-only, has read-only files or is not recovered.


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.


This issue is fixed in the following cumulative updates for SQL Server:

About cumulative updates for SQL Server:

Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server:


Learn about the terminology that Microsoft uses to describe software updates.

Need more help?

Want more options?

Explore subscription benefits, browse training courses, learn how to secure your device, and more.

Communities help you ask and answer questions, give feedback, and hear from experts with rich knowledge.

Was this information helpful?

What affected your experience?
By pressing submit, your feedback will be used to improve Microsoft products and services. Your IT admin will be able to collect this data. Privacy Statement.

Thank you for your feedback!