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Hi @Smith Simo,
Good day! Welcome to Microsoft Q&A forum!
Based on your description, I understand that you're getting an account Over Storage Quota error on your Education account.
To better understand the issue, could you please confirm the following:
1/ Would you mind sharing me a capture about your issue?
2/ Is your OneDrive storage full? Please follow the article to view the storage used.
I want to clarify that your account belongs to the organization, so Microsoft does not enforce your storage limits. In your case, I recommend contacting your school's IT department to check this issue.
An IT administrator can adjust a user's OneDrive storage space using the SharePoint admin center or PowerShell. You can check it in Change a specific user's OneDrive storage space.
You can refer this article to find your school admin/IT.
I look forward to your information and if you have any questions, please feel free to reach out to me - I’ll be happy to assist you.
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