Ok, it needs to be the domain name used internally. The website may be solidline.de but I guess internally they used something different because in my book it is best practice to not use public domains on the local network. Something like solidline.local or something might be used.

To find this you can do the following:
Start a command window (start-->all programs-->accessories-->command prompt);
Type: Set and press enter;
Find what is listed after USERDOMAIN=

This is your internal domain name.

When does the error occur? Every time a user logs in?
_________________________
Mart

- Chuck Norris once sold ebay to ebay on ebay.