This can be caused if you've changed your administrative account user to improve security on a server.
In order to resolve this issue you will need to stop the max view services in this order:
Then edit cimserver_planned.conf in your maxview storage manager, default path is:
C:\Program Files\Adaptec\maxView Storage Manager\pegasus\cimserver_planned.conf
open with text editor and alter the line from
It may look something like this:
save and exit the conf file.
Now start the maxview Storage Manager services in this order:
Now you can login with your admin account correctly.