Hi there,

Yes, you can select the OneDrive as output folder. If you are encountering errors, please ensure that the OneDrive folder on your computer is properly connected.

To resolve the issue, you can follow these steps:

Verify that your OneDrive account is logged in and synced on your computer.
Ensure that the OneDrive folder is accessible and not experiencing any synchronization errors.
Once you have confirmed that your OneDrive is properly connected and synced, you should be able to select it as the output folder for the split operation in Kutools for Word without any problems.

If you continue to experience difficulties, please don't hesitate to reach out to us. We're here to assist you.

Amanda