Hi Jay,
Thank you for posting, I am here to help you today. OneDrive Storage and Outlook storage are separate services, but they are both part of your Microsoft cloud storage. Are you referring to remove or delete your OneDrive account?.
For the meantime try this steps:
Check your internet connection:
If you see a Working Offline, Disconnected, or Trying to connect status in the Outlook status bar, it indicates that there is a problem with your internet connection.
Check if your inbox is full:
Your Outlook inbox may be filled with large amounts of emails and has reached the storage limit. You can delete some of them to get more storage space.
we look forward to your response ,Thanks for your precious time. Have a nice day!
Best regards,
Jansher