Microsoft.Data.SqlClient.SqlException (0x80131904): The C compiler encountered a failure (4380244)

When trying to do anything SQL related, like browsing in the WebShop, errors like thes occur in the logs:

:2025-08-04 06:28:31.2946 ERROR ( WebLog aswo0rjif3t4ru5kvefdv4ch) : An error occurred while processing the request: 

System.Exception: An error occurred while processing the request: GET <url>

---> System.Exception: Error while evaluating IsRequestable 

---> VI.DB.DatabaseException: Datenbankfehler 41313: The C compiler encountered a failure. The exit code was 2.

---> Microsoft.Data.SqlClient.SqlException (0x80131904): The C compiler encountered a failure. The exit code was 2.

The 0x80131904 error is usually caused by one (or more) of the following:

1. SQL server is running out of disk space.
2. Content database transaction log is full
3. The System Database tempdb is out of space

Check tand make sure that there is sufficient space on the SQL Server's drive and that the transaction logs aren't full.

If you are using SQL Server 2022, there is also a known issue and patch for a similar error:
https://learn.microsoft.com/en-us/troubleshoot/sql/releases/sqlserver-2022/cumulativeupdate6#2472403