When you use VNC Viewer to connect to a remote computer for the first time, you are prompted to enter a username and password. This authenticates you to VNC Server, the program running on the remote computer.
Note: You can choose to remember the password so you don't have to enter it each time you connect.
Professional or Enterprise subscription
By default, you must enter the local system (or domain/Active Directory) username and password you usually use to log in to your desktop on the remote computer.
Note: You can configure VNC Server to use the same authentication scheme as a Home subscription (known as 'VNC Password') . If you've done this, then please see the section below.
Home subscription / VNC Password
You must enter the password you specified when you installed VNC Server on the remote computer.
What do I do if I have forgotten my username and/or password?
Please see this article: How do I reset my password?
I'm entering the right username and password but I get an Access Denied message
By default, VNC Server is configured to only allow users who are members of the local administrators group to authenticate (
Administrators under Windows,
admin group under Linux and Mac).
You can register other user accounts and groups with VNC Server to enable those users to connect using their own system credentials, and additionally set session permissions.