How to turn off or disable OneDrive in windows 11?

Disable OneDrive Scheduled Tasks via Task Scheduler. 

This is a method that gets to the root cause of why OneDrive keeps reviving itself. Even after you uninstall OneDrive or disable it from startup, Windows has hidden "scheduled tasks" that can quietly reactivate it or run background maintenance . Disabling these tasks is a permanent, system-level block that doesn't involve any of the methods you've ruled out.

How to disable OneDrive in Windows 11:

Step 1: Open Task Scheduler

• Press Windows + R on your keyboard
• Type taskschd.msc and press Enter

Step 2: Navigate to Task Scheduler Library

• In the left panel, click on Task Scheduler Library (the root folder)

Step 3: Locate OneDrive Tasks

Look for these specific task names in the list:

• OneDrive Standalone Update Task-S-1-5-21-xxxxx (the numbers at the end will be unique to your computer)
• OneDrive Reporting Task-S-1-5-21-xxxxx
• OneDrive Per-Machine Standalone Update (may appear if OneDrive was installed for all users)

Step 4: Disable Each Task

• Right-click on each OneDrive-related task
• Select  and disable OneDrive in Windows 11

Step 5: Verify All Tasks Are Disabled 

• The "State" column should show Disabled for each OneDrive task
• If you don't see the State column, right-click on the column headers and add it.