In that case, you can disable the Windows Automatic Maintenance and re-enable it at the time of your convenience.
To disable Windows Automatic Maintenance, follow the steps below:
- Log on to your Windows 8.1 device using your administrator account.
- Press Windows + W keys and type Task Schedule.
- Open Task Scheduler.
- Locate and select Task Scheduler Library.
- Under Task Scheduler Library, select Microsoft, Windows, and then Task Scheduler.
- Right click Idle Maintenance and select Disable.
- Right click Regular Maintenance and select Disable.
- Close the Task Scheduler windows, and restart the device to allow changes to take effect.
Let us know how it goes.