License & Subscription Issues

Fix Outlook Storage Not Updating After Microsoft Storage Upgrade

Adam DavisAdam Davis Oct 21, 2026 868 views

Question details

Outlook continues to report full storage and prevents receiving new emails after purchasing a Microsoft storage upgrade.

How to Fix Outlook Storage Limits Not Updating After a Microsoft Upgrade
Product
Microsoft Outlook
Device & OS
not provided
Scenario
The user purchased additional Microsoft cloud storage to resolve a storage full error, but the expanded capacity is not reflecting in Outlook's email limits.
Observed behavior
Outlook displays a 'storage full' warning and blocks incoming emails despite the account dashboard showing ample available space (e.g., 6.9 GB used out of 100 GB).
Before you start

Verify that you purchased the storage upgrade using the exact same Microsoft account email address that you are currently using for Outlook.

Solution 1Recommended

Refresh Your Microsoft Account and Outlook Session

Force Outlook to fetch your updated storage quota by securely signing out and signing back in to your Microsoft account.

Sometimes, the local Outlook client or the web session caches your old storage limit. A manual sign-out process forces the system to ping Microsoft's servers and retrieve the new subscription data.

1
Sign out of Outlook

Open your Outlook client or Outlook on the web, click on your profile picture in the top right corner, and select 'Sign out'.

2
Sign out of OneDrive

To ensure all Microsoft services are refreshed, go to the OneDrive website, click your profile icon, and sign out.

3
Sign back in

Close your browser or application completely, reopen it, and log back into Outlook with your credentials. Check if your new storage limit is now recognized.

Refresh Your Microsoft Account and Outlook Session
Free Microsoft Office alternative

Switch to a Seamless and Free Office Alternative

Dealing with recurring subscription bugs and storage limit errors can disrupt your productivity. WPS Office offers a completely free, highly compatible alternative to Microsoft Office, letting you focus on your documents rather than troubleshooting account quotas.

  1. 1. Download WPS Office: Visit the official WPS website and download the free installation package.
  2. 2. Install the Application: Run the installer and follow the on-screen prompts to set up WPS Office on your device.
  3. 3. Open Your Documents: Instantly open and edit your existing Microsoft Office files without losing any formatting.
Fully compatible with Microsoft Word, Excel, and PowerPoint formatsLightweight application that won't drain your system resourcesFree to use without complicated subscription tiersFamiliar user interface for a seamless and quick transition
microsoft office alternative - wps office

Frequently Asked Questions

How long does it take for a Microsoft storage upgrade to reflect in Outlook?

It can take up to 24 to 48 hours for a newly purchased storage subscription to sync across all Microsoft services, including Outlook and OneDrive. If it takes longer, you may need to contact Microsoft support.

Why does my Outlook say storage is full when I have 100GB of space?

Microsoft splits storage into two distinct categories: cloud storage (OneDrive) and email storage. Upgrading to certain Microsoft tiers gives you 100GB of cloud storage, but your Outlook mailbox limit may remain at a lower cap (like 15GB or 50GB). Check your settings to see which specific quota is full.

How do I check my actual Outlook email storage usage?

Log into Outlook on the web, click the gear icon in the top right corner to open Settings, navigate to the 'General' tab, and select 'Storage'. This page provides a detailed breakdown of your mailbox usage versus your OneDrive storage.