Recently I posted a problem that the XP Pro Scheduler wouldn’t let me schedule a task because I don’t have a password on my (admin) account. And I was afraid to add one because then other apps I run in that account might suddenly break.
Someone suggested setting up a separate admin account with a password and specifying that account in the scheduler. That KINDA worked – the scheduled tasks start and run fine (I can see them in Task Manager) but they don’t get a window! Since some of them are GUI apps that’s unacceptable.
The solution was to force the Scheduler to accept blank passwords. Thusly:
In the Registry Editor:
Locate and expand HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa
Double-click on the limitblankpassworduse and change the variable by assigning the value 0: