Send & Receive Issues

Fix Microsoft Outlook Cannot Send or Receive Emails When OneDrive Storage is Full

Steven Parker Oct 20, 2026 868 views

Question details

The user is unable to send or receive emails in Microsoft Outlook because their shared Microsoft account storage has reached its 5 GB limit due to OneDrive files.

How to Fix Outlook Cannot Send or Receive Emails Due to Full OneDrive Storage

Product: Microsoft Outlook and OneDrive
Device & OS: not provided
Scenario: Attempting to send or receive emails using a Microsoft Outlook account.
Observed behavior: Email service is halted, and deleting emails alone does not resolve the issue because the shared Microsoft account storage is still at full capacity from other data.

Before you start

Ensure you have your Microsoft account credentials ready to log into OneDrive, and keep in mind that Microsoft provides a combined 5 GB of free storage shared across both Outlook and OneDrive.

Solution 1Recommended

Free Up Microsoft Account Storage via OneDrive

Manage and reduce your OneDrive file storage to restore your Outlook email functionality.

Microsoft Outlook and OneDrive share the exact same Microsoft account storage quota. If your stored files exceed the free 5 GB limit, simply deleting a few emails will not be enough to restore your email service. You must free up space directly from the OneDrive cloud.

Sign in to OneDrive

Open your web browser, navigate to OneDrive.com, and log in with your Microsoft account credentials.

Access Storage Settings

Click on the Settings gear icon located at the top right corner of the screen, select Options, and then choose Manage Storage.

Review and Remove Files

Review your current storage usage to identify what is taking up space. Delete unnecessary files, photos, or documents, or move them to a local hard drive until your total account usage drops below the 5 GB limit.

Wait for Service Restoration

Once you have successfully freed up enough space, allow up to 24 hours for your Microsoft Outlook email sending and receiving capabilities to fully synchronize and resume.

Free Up Microsoft Account Storage via OneDrive

Shared Storage Limitation: OneDrive storage cannot be separated from the Microsoft account storage used by Outlook. Managing both within the same quota is required.

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Frequently Asked Questions

Why does my OneDrive storage affect my Outlook emails?

Microsoft accounts share a single storage quota across all connected services. The free tier provides 5 GB of total space, meaning if your OneDrive files consume this capacity, your Outlook account will not have any remaining room to process incoming or outgoing emails.

Will deleting old emails fix the Outlook storage full error?

Deleting emails can slightly help, but if your OneDrive files (such as high-resolution photos or large documents) are taking up the majority of the shared 5 GB limit, deleting emails alone won't be enough. You must delete larger files from OneDrive to restore email functionality.

How long does it take for Outlook to work again after clearing OneDrive space?

After you free up sufficient storage space in your Microsoft account, it can take up to 24 hours for Outlook's sending and receiving services to recognize the new quota, synchronize, and resume normal operation.

Can I separate my Outlook storage from my OneDrive storage?

No, Microsoft does not allow users to separate or partition storage quotas. Both Outlook attachments and OneDrive files utilize the exact same unified Microsoft account storage pool.

Outlook & Email Problems