E3 Onedrive for business forced (by Microsoft and without prior advice) to 10GB since Friday

Question

E3 Onedrive for business forced (by Microsoft and without prior advice) to 10GB since Friday

Alessandro Tiberti Bertin 6

Since last Friday this happened:

User's image

and if I try to change it:

User's image

so now OneDrive is stuck to 10GB despite E3 license allowing up to 5TB.

and even support assist is broken so impossible to raise a support ticket:
r/microsoft365 - Onedrive for business stuck at 10GB since Friday, support assistant not working

copilot resume of troubleshooting:

Subject: OneDrive storage quota incorrectly reduced to 10 GB

My OneDrive for Business storage quota was unexpectedly reduced to 10 GB approximately 2-3 days ago.

Tenant details:

License SKU: DEVELOPERPACK (Office 365 E3 Developer)
Tenant default OneDrive storage limit: 1024 GB
User: xxxxxxxxxxxxxxxxxxxxx

Evidence:

Microsoft 365 Admin Center shows the organization's default OneDrive limit is 1024 GB.
The user account is configured with a maximum storage of 10 GB.
SharePoint Online PowerShell returns:

Get-SPOSite 'https://xxxxxxxxxxxxxx-my.sharepoint.com/personal/yyyyyyy'

StorageQuota : 10240

StorageQuotaType : UserSpecific

Issue:

The personal OneDrive site has been changed to a UserSpecific quota of 10240 MB (10 GB).
The quota is inconsistent with the tenant default limit of 1024 GB.
OneDrive reports the site as full because usage now equals the 10 GB quota.

Actions already performed:

Verified tenant default storage limit remains 1024 GB.
Verified license assignment.
Connected using SharePoint Online Management Shell.
Confirmed StorageQuotaType = UserSpecific.
Attempted to remove/reset the UserSpecific quota using SharePoint Online PowerShell.
Quota remains 10240 MB.

Request:

Please investigate the backend quota assignment for this OneDrive site and restore the correct OneDrive quota according to tenant entitlement. Please remove the incorrect UserSpecific quota and reapply the default tenant allocation.

0 comments

3 answers

Your answer

Answer 1

Chris-D 1,180 Independent Advisor

Hi Alessandro,

Thank you for sharing the details of your situation and the troubleshooting you have already performed.

As this is a user-to-user community forum, I do not have the ability to directly access or modify your account or service. However, I can provide guidance, recommend next steps, share applicable resources, and direct you to the appropriate support channels so the issue can be investigated further.

The information provided shows that the affected OneDrive site is currently subject to a 10 GB user-specific quota:

StorageQuota : 10240

StorageQuotaType : UserSpecific

Although the organization’s default OneDrive limit is set to 1024 GB, the admin center does not allow this user’s quota to be increased beyond 10 GB. This suggests that the limit is being enforced at the service or licensing level and cannot currently be resolved through the standard storage settings or SharePoint Online PowerShell

I also understand that you attempted to follow Microsoft’s documented diagnostic path for OneDrive storage quota issues, but the Run Tests option was not available. Since Support Assistant is currently blocked in your admin center, this may be preventing the diagnostic from appearing correctly..

At this stage, I recommend contacting Microsoft Support. The support team can verify the storage entitlement recognized for the DEVELOPERPACK license, investigate why the 10 GB user-specific quota was assigned, and correct the backend quota configuration if it was applied incorrectly.

To create a support request:

Sign in to the Microsoft 365 admin center using a Global Administrator account or another administrator account authorized to create support requests.
Select Help & support from the navigation menu.
Turn off the "Support Assistant" toggle at the top of the support pane.
Enter "OneDrive storage quota unexpectedly reduced to 10 GB" in the issue description.
If the OneDrive Storage Quota diagnostic or Run Tests option appears, run the diagnostic and save the results.
If the diagnostic is unavailable or does not resolve the issue, choose the "Contact support".
Follow the prompts to create a new service request and select the preferred contact method.

I hope this helps move the case forward. Should you have any further questions or need additional assistance, please feel free to share them in the comment below. I'm very happy to help.

If the answer is helpful, please click "Yes" and kindly upvote it.

Note: Please follow the steps in the forum documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

Alessandro Tiberti Bertin 6 Reputation points

2026-09-01T18:13:40.1433333+00:00

thanks but "contact support" is grayed out:
Alessandro Tiberti Bertin 6 Reputation points

2026-09-01T18:15:42.4166667+00:00

and before anyone asks: no, the diags do not help:
Chris-D 1,180 Reputation points Independent Advisor

2026-09-01T18:20:10.5633333+00:00
Hi Alessandro,

Thank you for the screenshot.

Please try selecting the Contact support icon, represented by the headset symbol at the top of the support pane.

This may take you directly to the contact options, where you can choose Phone or Email to submit your support request.

Let me know how it goes. I'll assist further if needed.
Alessandro Tiberti Bertin 6 Reputation points

2026-09-01T18:26:25.86+00:00

Thank you Chris, using this method I finally succeded raising a request :)
Chris-D 1,180 Reputation points Independent Advisor

2026-09-01T18:30:20.3933333+00:00

Hi Alessandro,

Thank you for the update. I’m very glad that it worked.

I hope the Microsoft Support team will investigate the OneDrive quota issue and provide a resolution soon.

Should you have any concerns or questions in the future, please don’t hesitate to reach out. Not only will I be happy to assist you, but all users in the Q&A forum will also do their best to provide support and guidance.

If you found the answer helpful, I would truly appreciate it if you could mark it as 'Yes'. This helps highlight the solution for others who may be searching for similar information in the community. Your contribution not only supports fellow users in finding the right guidance more quickly, but also helps build a more resourceful and collaborative space for everyone.

Thank you again for your contributions.
Alessandro Tiberti Bertin 6 Reputation points

2026-09-01T18:33:12.78+00:00

Hi Chris, the main issue is not reaching Microsoft but understanding my multi-year tenant has been capped this way so it wouldn't be fair to other users to flag this has solved. But I'll keep this post updated as I know from Reddit I am not the only one having this issue since last weekend.
Chris-D 1,180 Reputation points Independent Advisor

2026-09-01T18:36:35.43+00:00

Hi Alessandro,

Thank you for your response. I understand that the underlying OneDrive quota issue remains unresolved, and that raising a support request was only the next step in the investigation.

Please feel free to update this thread when you receive further information from Microsoft Support, especially since other users may be experiencing the same issue.

If there is anything else I can assist with, I will do my best to support you.
Meng Wugang 0 Reputation points

2026-09-03T01:03:38.9666667+00:00

Same problem.
Chris-D 1,180 Reputation points Independent Advisor

2026-09-03T15:24:23.6766667+00:00

Hi Meng,

Thank you for letting me know.

If you are experiencing the same OneDrive storage quota issue, you may refer to the steps provided above to open a support request with Microsoft Support. The support team can review your tenant’s license entitlement and quota configuration and investigate the issue further.

I hope this can be resolved soon. Feel free to reach out if you have any further questions.

Answer 2

Alessandro Tiberti Bertin 6

If the storage amount reverts or cannot be changed, Microsoft documents a diagnostic path:

In the Microsoft 365 admin center, select Run Tests.

which of course is nowhere to be found...

0 comments

Answer 3

The behavior matches OneDrive quota enforcement when a user has an effective per-user quota lower than current usage. A OneDrive site becomes read-only when usage exceeds the quota currently applied to that user.

Based on the details provided:

The tenant default is still 1024 GB.
The affected OneDrive is showing StorageQuotaType : UserSpecific and StorageQuota : 10240.
That means the site is currently governed by a user-specific 10 GB limit, not the tenant default.
Because usage is already at 10 GB, the site is read-only until the quota issue is resolved.

What can be done from admin side:

In the Microsoft 365 admin center, go to Users > Active users > select the user > OneDrive tab.
Under Storage used, select Edit.
Try setting Maximum storage for this user to the intended value and save, or switch it back to the organization default if the UI allows it.
Then verify the effective limit again in the user’s OneDrive tab by checking the max value shown next to Storage used.

If the storage amount reverts or cannot be changed, Microsoft documents a diagnostic path:

In the Microsoft 365 admin center, select Run Tests.
Launch the OneDrive storage quota diagnostic.
Follow the recommendations returned by the diagnostic.

Important limitation from the documented guidance:

If the quota cannot be increased, the only supported workaround is to reduce OneDrive usage below the current quota by deleting or moving files and then emptying the OneDrive recycle bin.
After the quota is increased or usage is reduced, allow time for SharePoint Online to reevaluate the site, then confirm upload and edit access is restored.

The provided evidence already shows this is not the tenant default setting but a user-specific quota override. If admin center changes do not persist and the diagnostic does not resolve it, the supported facts in the documentation stop at running the quota diagnostic and verifying the applied limit.