If one or more pre-tasks fails, then patching will not occur on that endpoint. Furthermore, post-patching tasks, by default, will also not run (unless the skip.workflow.post.patching.tasks.on.previous.fails Intigua property is set to false).
Note1: when the remediation plan re-tries the pre-tasks, it will run all pre-tasks again, even if one of them was previously successful.
Example Scenario: You have three pre-tasks (A, B, and C)
A succeeds, so it moves to B
B fails, and stops the patching process
Thus, neither C nor patching actions run
On retry, A will run again.
Note2: For a more customizable flow, you should combine pre-tasks into a single script with extra logic for remembering the steps (via files on the EP) that it already made.
Note3: pre-patching is expected to run again whenever patching fails.
Pre-patching succeeds, so it moves to patching
Post-patching skips (by default)
Pre-patching will start again.