Today I finally found what was the cause of this behaviour - and fixed it. It turned out I was missing the following lines in my web.config file: Hopefully this might help someone else who gets stuck with this problem :)

I see. Thank you for pointing that out!

Yes that was actually all it took.. I'm not really sure of how the Simple File Sharing works, but it seems that if you have it turned on - allowing users within your network to access shared folders without any authentication - you run into problems when you try to access that machine USING a username and password. I've heard about other people running into this issue whenver they try to do something similar.

Thank you for your reply. I'll look into the article to see if it helps. [edit: a few hours later...] This is the way to do it - though I will probably define and group my methods as "edit", "delete" etc. and in the app.config I'll define which user groups are allowed to perform what kind of actions. An "edit" contains both "Administrators" and "Power Users" and "delete" contains only "Administrators" and so forth. modified on Friday, August 27, 2010 4:03 AM

I'm just gonna write my own. It won't take too long :)

I see your point - thanks Mark!

I seem to have left my brains in the other pants... ShowDialog(IWin32Owner) will do the trick. :-O

I recently faced the same problem and found the solution on my own which worked for me. I just checked the references list in the solutions explorer and found that there were two or more dependencies attached of the same reference. Eg. Assembly.dll is the main reference, but another reference like Assembly.design.dll was also attached. So i removed the Assembly.design.dll that solved the problem Hope this help:-)

Great... Thanks for the update as well. . ;) ;) I just overlooked the contentType. Abhishek Sur My Latest Articles **Create CLR objects in SQL Server 2005 C# Uncommon Keywords Read/Write Excel using OleDB **Don't forget to click "Good Answer" if you like to.

This is sad, but I understand how you are feeling. :( It is a crappy thing, but it's life -^ Carlo Pallini