Raja,
I assume you're using Linux/UNIX.
Here's the solution. It worked for me.
- In /usr/sap/ccms/apmintroscope/config/users.xml, update the Guest password with this MD5 hash: c4582df82299e0581a9fc6bb34c53
- In user management screen of "Configure CA Introscope", choose "Guest" as connection user with password "guest12" (without quotation marks)
If it's still not working, then delete the EM and re-install the introscope.
- Go to expert mode -> Delete references -> Remove the line
- Delete folder /usr/sap/ccms/apmintroscope
- Install introscope and management modules again
- don't forget to re-set the permission for diagnostic agent user
- Go back to solman_setup "Configure CA Introscope" and do import CA again
- Save, you'll have a green status
Regards,