Error Code: 1 & Error Info: 0
This error code and info indicates that the viewer cannot find the Windows server on the network. Mostly, this is caused by Virtual Private Network (VPN) enabled on the primary machine. For more details, kindly refer to the Troubleshooting Network connection – Connection Error chapter above.
Error Code: 1-2-3 & Error Info: 0-3-5
This error indicates that the primary machine can be reached over the network but connection fails after the indicated connection time. Check the Connection Error chapter discussed above.
These error message box also shows the connected time, it indicates how long the viewer is connected before it disconnects. And in case procedures did not help, just report this error code sequence to spacedesk support.