The error message "Unable to connect with Garmin services" can be caused by a few issues.
• Internet Security/Firewall
Security programs can affect the communication between a computer and the update servers. It may be necessary to disable any and all security programs to allow Express to communicate. Refer to the instructions provided by the application manufacturer to disable any security programs installed to the computer.
• Garmin Core Update Service is stopped/disabled
The Garmin Core Update Service is required for Garmin Express to function. The computer or a program may have disabled this service from running. If the service was stopped, it will need to be restarted:
Garmin Express should be able to look for available updates now.