Error: The underlying connection was closed: Could not establish trust relationship with remote server
When connecting to ArcWeb Services using the toolbar the following error is returned:
The underlying connection was closed: Could not establish trust relationship with remote server.
Internet Explorer 6 is not installed or is corrupted.
Solution or Workaround
Install or reinstall Internet Explorer 6.
- Navigate to Start > Control Panel > Add/Remove Programs.
- If the version of Internet Explorer installed is lower than 6 (e.g., version 5), uninstall it.
- Download and install Internet Explorer 6 from
Microsoft Windows Update.
If this does not resolve the problem see method 3 in the related Microsoft knowledge base article.