Sean,

> All users and SYSTEM have full control security rights.
> Yes, I can edit the databases when login in as SYSDBA.
>
> The problem occured when opening a query on a table and has just

occured

> when connecting to a database in IBExpert.
> All this makes me think it's a problem with Windows Server.

You are correct!

The problem is with the server, it needs to be restarted.


Sean