When connecting to ArcWeb Services from the ArcWeb Toolbar, a connection error displays with the following message:
"Unable to connect to ArcWeb Services.
Invalid user name or password.
Note: the user name and password are case sensitive."
The same user name and password that causes this error works for the user account pages at https://www.arcwebservices.com/v2006/account/index.do, and to access other online utilities, such as the Knowledge Base.
ArcWeb Services uses the same ESRI Global Account login that other ESRI online applications use. When accessing ArcWeb Services, the login is case sensitive. This is done for security reasons. Other ESRI online applications don't require the user name and password to be case sensitive.