I have a program that uses the built in webbrowser control. At some point during the usage of this, I\'m not sure at what point, but it appears to be random, I get the foll
I encountered this exception at various occasions while trying to access WebBrowser.ReadyState and WebBrowser.Document.
I was having the exceptions exclusively on Windows XP 32bit. After the other solutions didn't help, it appeared to be a threading issue. I surrounded any code blocks that accessed the web browser control with mutex locks, and that seemed to solve the problem.