This error indicates that the workstation client experienced a network error and a new attempt has been started.
Please follow these instructions in order to resolve the issue:
1. Wait 2 minutes and then proceed to pair once again. This may allow enough time for pending requests to complete.
2. If the issue persists - reboot the computer and try to pair. This may ensure the computer did not reach an error state.
Why might I see error code 1420001 on the Workstation client when pairing my mobile device?