some times my control builder M opens as read only in abb 800xa system
Enusure your project is not reserved by any other users if this is version (5.1 or later)
check the password protection for the applications.
what kind of version is running?
Logging in administrator rights user and check the passowrd if set?
Or its total project is readonly or few applications are readonly?
You are bound to get read-only for the editors (say Application, Program, CM etc.) if you have not reserved the application or the certain module by the current logeed in (PPA) user. Sometimes, if a module (CM, FB) is password protected, then also you will get them as read-only.
Please cross check your windows users are having sync to PPA users.