Admin Password

Dear ZXcvbn!

If you forget the admin password. I'm sorry to tell you that the password of the admin user cannot be retrieved. 

Handling Procedure

1. Log in as a non-admin user to back up all configuration data on the NMS side

2. Reinstall the U2000 system again.

3. Log in as an admin user, reply to data, and change the default password (please remember it)

If the password of a non-security admin is forgotten, the security admin resets the password to a new password. If the password of a security admin (non-admin user) is forgotten, another security admin resets the password to a new password.

Handling Procedure

1. Log in to the U2000 client as a security admin.
2. Choose Administration > NMS Security > NMS User Management from the main menu.

3. In the NMS User Management navigation tree, expand the User node, right-click the user whose password is to be reset, and choose Reset Password from the shortcut menu.

4. In the Reset Password dialog box, set New Password and Confirm Password, and click OK.

Good luck!

Hello,
The user name of the admin of the U2000 is admin (including the client, server monitoring, and maintenance tool).The initial password is Changeme_123,

When you log in to the system for the first time, the system prompts you to change the initial password. You can perform other operations only after the change is successful. If you want to change the initial password, you need to change the initial password.

Choose File > Change Password from the main menu (traditional style)

In the dialog box that is displayed, enter the password and click OK,
More detail in "About U2000 Password"
https://forum.huawei.com/enterprise/en/about-u2000-password/thread/548769-875
Thanks