Robot will not connect

Topic

While logging into Nintex Robot, if the following message appears on the login screen:

Cannot access Nintex Servers - There might be a problem with your network connection or firewall settings. 

Instructions

1. Check to see if there were any changes to the environment, such as Microsoft updates.
2. Check to see if there were any changes made to permissions.
3. If these steps do not help:
   Gather the Robot logs: see the Additional Information section below for instructions on obtaining the logs.
4. When looking at the Robot logs, if this error appears:
   No connection could be made because the target machine actively refused it.
5. There will be a port number at the end of the error. If there is a Robot machine working, check the app settings.config file and compare it to the non-working Robot. Specifically, check the HttpServicesPort value.
   The appSettings.config file is located at C:\Program Files\Nintex Robot\<version>\Config
6. Make changes to non-working Robots to match the working Robot settings. 
   For example:
   When running RPA without a security certificate, the port will be 80.
   When running RPA with a security certificate, the port will be 443. 
7. Check the appSettings.config for the <add key="HttpServicesPort" value="80"/>
8. If using SSL, change this port above to 443 and save the file. 
9. If this does not help, open a case by emailing support@nintex.com. Provide the Robot logs and mention the steps taken above. 

Additional Information

• Nintex Community: How to Gather RPA Robot or Studio Logs