Unable to set breakpoint at break-addr, no write access. Your program cannot be debugged unless you can change the write access of your code. Facility: DEBUG, VMS Debugger Explanation: Most debugger startups set a breakpoint in the user program and then return control to that program. The debugger regains control when that breakpoint is hit. It is necessary for the debugger to have write access to the user program in order to set breakpoints. User Action: Change/allow write access to your program's code.