Lost all admin rights NPM after editing with multiple tabs?

Version 2

    The troublemaker:

    NEVER EDIT ACCOUNTS IN MULTIPLE TABS!

    If you do, you'll probably loose all admin rights for all accounts (like I did).

     

    The solution:

    1. Open "Database Manager"
    2. Expand "NetPerfMon"
    3. Right-click "Accounts", choose "Query table ..."
    4. Click "Execute query", then "Enable table editing"
    5. Scroll to column "AllowAdmin"
    6. Change value from "N" to "Y" for your admin-account.
    7. Click "Enable table editing" again.
    8. Close "Database Manager".
    9. Log in to/refresh web console.