Issue
Error occurs when connecting to Azure DST Sync tool : Event log as follows
Log Name: Application
Source: AzureActiveDirectoryDirectorySyncTool
Date: 5/25/2015 2:44:18 PM
Event ID: 906
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Log Name: Application
Source: Directory Synchronization
Date: 5/25/2015 2:44:18 PM
Event ID: 0
Task Category: None
Level: Error
Keywords: Classic
User: N/A
Unable to establish a connection to the authentication service. Contact Technical Support. GetAuthState() failed with -2147186688 state. HResult:0. Contact Technical Support. (0x80048862)
Solution:
- This issue issue is caused due to an “Authentication proxy”.
- Try bypassing the proxy during the installation of AADSync and it should do the trick for you.
- The server can be configured again to use proxy after installation.
- ***Also, Make sure Firewall is allowed for Port 80 & 443***