Core component of SQL Server for storing, processing, and securing data
The reason for this error message is that you are trying to restore the database on an instance of SQL Server Express Edition, which up to SQL 2022 had a limit of 10 GB. This limit was increased to 50 GB in SQL Server 2025 Express Edition.
There are two ways to resolve the problem. One is to restore the backup to a different edition of SQL Server. If the purpose of the restore is testing or your own education, you can use Developer Edition which has no limits, but just like Express Edition it is free. However, in difference from Express Edition it is not licensed for production usage, so you need be careful. If the database is intended for production use, you need to use one of Standard or Enterprise Edition, which both come with a hefty license fee.
The other alternative is to upgrade to SQL Server 2025 Express Edition, and this will work if the size of the database is in the range 10 to 50 GB. If the database is bigger than 50 GB, this alternative will not help you.
You find downloads for SQL 2025 here: https://www.microsoft.com/en-us/sql-server/sql-server-downloads.
If you want to find downloads for Developer Edition for older versions of SQL Server, I refer you to Google (since I don't know exactly which version you want).