In workgroup environnment it's harder to find good credential. I know that remote features works fine in AD environnment. And I will focus on that because most of WPP's users are enterprises, so they have AD environnment.
The only format supported for now is : <Username>
Other formats like : <Hostname\Username>,<ip Adress\Username>, <Username@workgroupName> have little chance to work.
This is why some "Right-Click" options are grey out when AD environnment is not detected.
You can try to create a user on each computer with the same username/password.
Otherwise, I encourage you to migrate to AD. It will change your life.
The only format supported for now is : <Username>
Other formats like : <Hostname\Username>,<ip Adress\Username>, <Username@workgroupName> have little chance to work.
This is why some "Right-Click" options are grey out when AD environnment is not detected.
You can try to create a user on each computer with the same username/password.
Otherwise, I encourage you to migrate to AD. It will change your life.