1. Check the configuration of the SVN3000. The SVN3000 is not configured for IP address verification.
2. Check the terminal user name and the user name recorded on the SVN3000. The user names are consistent.
3. Check the user name and password. The user name and password are correct. It is determined that the problem lies in the network extension client. Install the SVNClientSP1Setup patch on the terminal. The problem is removed.