A connection with the server could not be established (WinINet Error while using HTTPS security, 12029), URL=https://machine.domain.com:6443/arcgis/services

Error Message

HTTPS web pages fail to load when accessed by an ArcGIS Server Account. In the ArcGIS Server logs, the following error message is returned:

Error:   
A connection with the server could not be established (WinINet Error while using HTTPS security, 12029), URL = https://machine.domain.com:6443/arcgis/services

Cause

• Certain settings in Windows Internet Options are incorrect.
• RSA encryption is disabled on the ArcGIS Server machine.

Solution or Workaround

Depending on the cause, perform the workarounds below:

Configure the Internet Options settings via Internet Explorer

1. If the ArcGIS Server machine uses Internet Explorer 10 or below, upgrade to Internet Explorer 11.
2. Launch Internet Explorer as the ArcGIS Server Account. To do so, highlight Internet Explorer, and press SHIFT + Right Click > Run as different user.
3. Click the Tools menu in Internet Explorer. Select Internet Options.
4. In the Connections tab, select LAN settings. Disable all forward proxy settings by unchecking the boxes.
5. In the Advanced tab, click Reset...
6. Close Internet Explorer and re-launch it as the ArcGIS Server Account (highlight Internet Explorer, and press SHIFT + Right Click > Run as different user.
7. Access an HTTPS page (for example, https://machine.domain.com:6443/arcgis). The page loads.

Enable RSA encryption

Enable RSA encryption on the ArcGIS Server machine. This process must be performed by the organization's IT. Refer to ArcGIS Server: Secure ArcGIS Server communication for more information on RSA encryption in ArcGIS Enterprise.