The uninstallation process ask for the default password or the password that is set under "Global Policy Settings". If you enter incorrect password you will see this error

Error : Invalid username and password

Possible Cause :

1. Applying incorrect password during the uninstallation process

2. Password is set different under "Global Policy Settings".

 Following are the steps done :

1) Login to the SEEDC Managment Console.

2) In the console click on  "Tools tab "

3) In "Tools"  click on  " Global Policy Settings ".

4) In that select Options and click on " Client Uninstall Password " option. You can specify the uninstallation password on this window.

5) For futher assistence please follow the below screen shots .

Applies To

Symantec Endpoint Encryption Device Control Manager 8.0 and above

Symantec Endpoint Encryption client 8.0 and above