OneDrive File Issues

How to Fix Microsoft Storage Usage Increasing After Deleting Files

Kushani Nimanthika Oct 1, 2026 870 views

Question details

Storage usage metrics increase or fail to update properly after deleting files and emails to free up space.

How to Fix Microsoft Storage Usage Increasing After Deleting Files

Product: Microsoft OneDrive and Outlook.com
Device & OS: not provided
Scenario: Attempting to clear Microsoft cloud storage space by removing unwanted emails and files.
Observed behavior: Storage usage initially drops but subsequently reports a higher usage (e.g., jumping from 4.8 GB to 14.8 GB), triggering persistent storage warnings.

Before you start

Before troubleshooting, verify whether the storage warning you received refers specifically to Microsoft Cloud Storage (OneDrive) or your Outlook.com mailbox storage, as Microsoft calculates these separately.

Solution 1Recommended

Empty Recycle Bins for Both OneDrive and Outlook

Deleting items only moves them to the Recycle Bin, which still counts against your quota. You must permanently empty these folders across both services.

Microsoft allocates separate storage for OneDrive (generally 5 GB) and Outlook.com (generally 15 GB). Because these pools are distinct, clearing out a massive amount of email attachments will not free up space in your OneDrive quota, and vice versa. Furthermore, deleted items remain on the server and consume storage until permanently erased.

Check your storage breakdown

Go to your Microsoft account storage management page via your browser to accurately identify whether it is OneDrive or Outlook that is exceeding its limit.

Empty the OneDrive recycle bin

Open OneDrive on the web, navigate to the 'Recycle bin' on the left sidebar, and click 'Empty recycle bin' at the top of the page to permanently delete your files.

Empty the Outlook Deleted Items folder

Open Outlook.com, go to the 'Deleted Items' folder in your mailbox, and select 'Empty folder'. Check the 'Recover items deleted from this folder' section at the top and clear that as well.

Wait for the server to sync

Allow up to 24 hours for Microsoft servers to fully recalculate your storage and update your usage dashboard.

Empty Recycle Bins for Both OneDrive and Outlook

Storage Sync Delay: Microsoft's storage usage metrics do not always update instantly across all devices. Please allow some time for the dashboard to reflect the changes after permanently deleting your files.

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Frequently Asked Questions

Why does my Microsoft storage say it's full when I deleted everything?

Deleting files or emails merely moves them to the Recycle Bin or Deleted Items folder, which continues to count against your total storage quota. You must permanently empty these bins to actually free up space.

Are OneDrive storage and Outlook storage the same?

No. Microsoft provides separate allocations: typically 5 GB for OneDrive cloud storage (which covers files and photos) and 15 GB for Outlook.com mailbox storage (which covers emails and attachments).

How long does it take for Microsoft storage to update after deleting files?

It can take anywhere from a few hours to 24 hours for Microsoft servers to fully synchronize and reflect your updated storage availability across all platforms and dashboards.

Document & File Issues