Users hit Blocked Outgoing Email by Exchange Server when sign-in, licensing, install, or file access does not complete as expected. Confirm ownership details early—many “broken app” cases are actually account mismatches.
When Blocked Outgoing Email by Exchange Server Gets in the Way
Blocked Outgoing Email by Exchange Server is the core issue affecting Outlook. The failure affects Account Locked & Blocked and prevents the expected operation from completing.
Do This First for Blocked Outgoing Email by Exchange Server
Verify whether the secondary email account using the same domain as your primary account.
What Usually Causes Blocked Outgoing Email by Exchange Server
The Microsoft account in use may not match the purchase, mailbox, or license owner.
Cached credentials, device policy, or a stalled service check may block the expected action.
A subscription, permission, or temporary service issue may interrupt the workflow.
Practical Fix Sequence for Blocked Outgoing Email by Exchange Server
When to use this: Follow these steps when the symptoms match and you can access the relevant Microsoft account or escalate through Microsoft Support.
Verify whether the secondary email account using the same domain as your primary account.
Verify whether the primary email account experience the same issue, or is the problem only affecting the secondary mailbox.
Additionally, it would be helpful to know approximately:
Verify whether you sending them to many recipients at once in a single email, or sending multiple individual messages.
Microsoft 365 Exchange Online has various sending limits and protection mechanisms that may affect bulk or unusually high-volume sending activity. You may find the following article helpful for reference: Exchange Online limits - Service Descriptions | Microsoft Learn
If you have access to Exchange administration tools, you may also consider running a "Message Trace" to identify the exact action being taken on the messages and whether a specific policy or restriction is involved: Message trace in the new EAC in Exchange Online | Microsoft Learn
Why this helps: The sequence separates identity, permission, and local-client issues before broader reinstall work.
If it still fails: Save the exact error text, account email, and screenshots for Microsoft Support.
Edit Day-to-Day Files in WPS Despite Blocked Outgoing Email by Exchange Server

WPS Office cannot fix Microsoft account sign-in, Authenticator, billing, activation entitlement, OneDrive ownership, or admin locks. Those stay on the Microsoft side.
While that recovery continues, WPS Office can keep local editing moving:
Download and install WPS Office.
Open Word, Excel, PowerPoint, or PDF files in the matching WPS app.
Save a local working copy until Microsoft access returns.
Move or sync files back through your normal workflow afterward.
If you need a practical local workspace in the meantime, try WPS Office.
Stay Ahead of Blocked Outgoing Email by Exchange Server Next Time
Keep a backup verification method on important Microsoft accounts.
Record which account owns each purchase, mailbox, and device license.
Sign out of unused Microsoft profiles on shared PCs and update Office regularly.
Back up critical files before repair, reset, or reinstall actions.
Answers to Frequent Blocked Outgoing Email by Exchange Server Questions
Can WPS Office solve the Microsoft-side failure? No. It helps you keep editing compatible files locally while Microsoft account or service issues are handled in Microsoft tools.
Should I reinstall Office immediately? Usually not. Confirm the account, subscription, and exact error first unless Microsoft guidance for your case requires a reinstall.
What should I send to Microsoft Support? The affected account email, device type, exact error text, and screenshots of the failure.




