Connection Errors

Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1

This section includes troubleshooting information about connection errors.

In This Section

• Client requests receive a "503: Service Unavailable" error

• Anonymous accounts (IUSR_computername) attempting subauthentication logon receive 401 error

• Clients cannot connect to server

• UNC connections are denied access

• Access denied to console applications in System32 directory

• Client requests time out or error out

• Client cannot renegotiate request and returns an HTTP 413 error

• Clients receive 403.16 when logging on to a Web server over an SSL connection

• Clients browsing to a Web site receive HTTP 403.4 - Forbidden: SSL is required to view this resource error, but the Web site is not configured to use SSL

• UPN logons not accepted by IIS 6.0 server in Windows 2000 domain