How to change IBM WebSphere Network deployment passwords?
Solution 1:
If you can change your password depends on the repository used. However you can try to deactivate security by issuing
wsadmin -conntype NONE
wsasmin>securityoff
wsadmin>$AdminConfig save
Restart your deployment manager afterwards. However turning your security off opens also the applications deployed in Websphere.
Alternatively you could try to decode the password.