Do you have automatic collaboration on the sender enabled?
You can do this two ways. One being editing the rgsenderconfig file.
This is located at C:\Program Files\HP\Remote Graphic Sender.
## Allow authenticated collaborators to connect without prompting for
## authorization.
Rgsender.Collaboration.AlwaysAcceptCollaborators=1 (shown enabled here)
Save the change, and restart the sender service to have the change take effect.
You can also modify the sender by using the SenderConfigApp.exe tool in the above
called out directory.

Save the change. You will be prompted that the sender needs to be restarted. Accept this
to have the change take effect.
If you still have issues, let me know.
Kelly
I am an HP employee.