When trying to open or allocate a data set using the File Master GUI and the user-ID and password window pops up, you enter TSO user-ID and password correctly, but you cannot continue and the window keeps up still asking for user-ID and password.
In the z/OS CAWASRVR server job log you see:
...
ICH420I PROGRAM JVMLDMnn FROM LIBRARY SYS1.SIEALNKE CAUSED THE ENVIRONMENT TO BECOME UNCONTROLLED.
BPXP014I ENVIRONMENT MUST BE CONTROLLED FOR SERVER (BPX.SERVER) PROCESSING.
...
This problem can be resolved by adding PROGRAM CONTROL status to the library containing JVMLDMnn.
This can be done with the following RACF commands:
RALTER PROGRAM JVMLDMnn ADDMEM('SYS1.SIEALNKE'//NOPADCHK)
SETROPTS WHEN(PROGRAM) REFRESH
...
You could also do it for all programs on the library by using an asterisk instead of the program name:
RALTER PROGRAM * ADDMEM('SYS1.SIEALNKE'//NOPADCHK)
SETROPTS WHEN(PROGRAM) REFRESH
...
The user assigned to the server must have UPDATE access to the BPX.SERVER, or else it must run with UID=0.