Windows Task (Tasklist)

Windows stores scheduled tasks as XML files, AND in the registry.

You can find them in a few places:

Filesystem:

%systemroot%System32Tasks
%systemroot%Tasks

Registry:

HKLMSoftwareMicrosoftWindows NTCurrentVersionScheduleTaskcacheTasks HKLMSoftwareMicrosoftWindows NTCurrentVersionScheduleTaskcacheTree

Note: You can’t edit the XML files directly in Tasks for security reasons. See here for more information: Serverfault how to

To work with importing the XML files without going through the scheduled task UI you can look at these:

Schtasks.exe
Powershell Scheduled Task Cmdlets