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Fix Microsoft 365 Mailbox Still at 15 GB Limit After Subscription
Question details
The user's Microsoft 365 mailbox storage quota has not updated to 50 GB after purchasing a subscription, remaining stuck at the free 15 GB limit.
- Product
- Microsoft 365
- Device & OS
- not provided
- Scenario
- Checking mailbox storage capacity after upgrading to a paid Microsoft 365 subscription.
- Observed behavior
- The mailbox limit remains at 15 GB instead of upgrading to the expected 50 GB quota.
Ensure you are logged into the exact Microsoft account used to purchase the subscription, as mailbox upgrades are tied strictly to the purchasing account.
Verify Subscription Status and Wait for Account Sync
Confirm your subscription is active and allow time for Microsoft servers to apply the new 50 GB quota.
In most cases, account upgrades do not reflect instantly across all Microsoft services. The system requires time to synchronize your payment with the Outlook Exchange servers.
Log in to your Microsoft account dashboard and navigate to the Services & subscriptions page to ensure your Microsoft 365 plan is marked as Active.
Allow 24 to 48 hours to pass after the initial payment. System updates to mailbox quotas may not reflect immediately.
After the waiting period, check your Outlook mailbox storage settings again to see if the 50 GB limit has been applied.
Contact Official Microsoft Support
If the quota does not increase after 48 hours, reach out to Microsoft directly, as only they can adjust account-level server limits.
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Frequently Asked Questions
Why hasn't my Outlook storage increased immediately after payment?
Microsoft's servers typically require between 24 and 48 hours to fully process the subscription and synchronize the new 50 GB storage quota across all connected services.
What is the standard mailbox size for a Microsoft 365 subscriber?
Most premium Microsoft 365 subscriptions include a 50 GB mailbox quota for Outlook, which is a significant upgrade from the 15 GB limit provided to free accounts.
Can a community forum moderator fix my mailbox quota?
No, community users and forum moderators do not have access to backend account systems. You must contact official Microsoft Support to resolve account-level quota issues.
Does WPS Office provide email hosting services?
WPS Office focuses on powerful document creation and editing tools (Writer, Spreadsheets, Presentation, and PDF) rather than email hosting, making it a perfect lightweight companion to your existing email provider.
