Forum Discussion
OneDrive suddenly became empty after university storage policy change Is recovery still possible?
Hello everyone,
I am looking for technical guidance regarding a serious OneDrive for Business issue under Microsoft 365 Education.
Environment
- Microsoft 365 Education tenant.
- University-managed account.
- OneDrive for Business.
- My account is still active and I can sign in normally.
What happened
On July 16, 2026, I signed into my OneDrive and discovered that my entire "My files" folder was empty.
I verified the following:
- I am signed into the correct account.
- "My files" is completely empty.
- The OneDrive Recycle Bin is empty.
- "Restore your OneDrive" does not show any mass deletion event.
- My OneDrive site is accessible, but there are no files.
- I unfortunately do not have a complete local backup.
A few days later, my university informed students that they had reduced the OneDrive storage quota from 5 TB to 30 GB due to a Microsoft/provider policy update.
I suspect my OneDrive contained more than 30 GB because I had stored backups from my previous computer together with years of academic, personal and work files.
However, I would like to understand whether exceeding the new storage quota could actually cause an existing OneDrive site to appear completely empty, or whether this suggests another issue such as:
- OneDrive reprovisioning
- Site replacement
- License reassignment
- Site deletion
- Storage migration
- SharePoint issue
- Other administrative problem
The university initially described this as a temporary Microsoft incident, but later told me that the files had been deleted because of the OneDrive application, without providing any technical explanation.
I have already asked the university IT department to investigate:
- Deleted Sites in SharePoint Admin Center
- Second-stage Recycle Bin
- Retention policies
- Previous OneDrive site
- Licensing history
- Possible restore options
My question to Microsoft experts is:
1. Can a storage quota reduction (5 TB → 30 GB) ever make an existing OneDrive appear completely empty?
2. Are there other administrative scenarios that could produce this behavior while leaving the account active?
3. Is there anything specific I should ask my Microsoft 365 administrator to verify that is commonly overlooked?
Any guidance would be greatly appreciated because these files represent several years of academic, professional and personal work.
Thank you very much.
2 Replies
Reducing the quota should not make existing files disappear. Microsoft’s current behavior is to place an over-quota OneDrive into read-only mode: existing content remains downloadable or deletable, while uploads and edits are blocked. An empty My files view therefore suggests a different site, site deletion/replacement, or content deletion rather than ordinary quota enforcement. Ask the SharePoint administrator to record the current personal-site URL and storage usage, compare it with the historical OneDrive URL, and check Active sites and Deleted sites. They should also run the deleted-personal-site query, inspect both recycle-bin stages, Purview retention locations, audit events for file or site deletion, license history, and service health. Do not reprovision the OneDrive or start a new sync, because that can complicate identification. Open a Microsoft 365 support case immediately with the UPN, site URLs, last-known-good date, and UTC discovery time so Microsoft can examine backend restore options before retention windows expire.
Good news first: Your files are almost certainly NOT permanently deleted.
What likely happened is that the university's system replaced your old OneDrive space with a brand-new, empty one when they changed the storage limits. Think of it like your old digital locker being moved to a "backup warehouse" while a new empty locker was put in its place.
Because this happened only a few days ago (July 15th), that "backup warehouse" still has your files, and they can be brought back. Microsoft keeps deleted sites for 93 days, so we have plenty of time—but we need to act now to avoid delays.
Here is your simple, step-by-step action plan:
Step 1: Do this RIGHT NOW (Offline)
- Turn off your Wi-Fi or unplug your ethernet cable.
- Go to your computer's File Explorer and find your OneDrive folder (usually C:\Users\YourName\OneDrive – [Your University]).
- Copy that entire folder to an external USB drive or a different folder on your computer (like your Desktop).
- Why? This protects your local copies. Once you reconnect to the internet, the app might try to "sync" with the empty cloud. By copying them first, you have a safe backup regardless of what happens next.
Step 2: Send this exact message to your IT Department (as soon as possible)
Copy and paste the text below into your existing ticket or a new email to the helpdesk. It uses their technical language so they know exactly what to do:
"Dear IT Team,
Regarding my empty OneDrive (ticket #[Your Ticket Number]): I have confirmed that my current site is a newly provisioned, empty site. My original files are likely still in the SharePoint 'Deleted Sites' or as an orphaned site.
To recover them, I kindly request the following actions:
- Please check the SharePoint Admin Center > Deleted Sites for my old personal URL (/personal/my_username_domain) and restore it. Note: You will need to delete the current empty site first to avoid a URL conflict.
- Before restoring, please temporarily increase the storage quota on that restored site so I can download my files, as my data exceeds the new 30GB limit.
- If the site is not in 'Deleted Sites', please run Get-SPOSite -IncludePersonalSite $true to find my old orphaned site (look for storage usage > 0 GB and a last modified date of July 15th).
I have an offline copy of my local files, so once the restored site is online, I just need the temporary quota bump to sync them down safely.
Thank you for your help!"
Step 3: Follow up wisely
- If you don't hear back within 2 to 3 business days, reply to your ticket politely and ask if they have checked the "Deleted Sites" folder yet.
- If they still don't reply after a week, remind them that they can escalate this to Microsoft Support (Education tenants have direct support) using the July 15th date to look at the backend audit logs.
The bottom line: This is a routine administrative fix for your IT team. Your data is safe in Microsoft's retention system. By sending them the specific commands above, you are saving them hours of troubleshooting and making it very easy for them to say "yes" and restore everything quickly. You've got this!
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Hope this will help you.
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