Outlook Error Codes

How to Fix Outlook Forwarding Error: The Operation Failed

Olivia Miller Sep 30, 2026 869 views

Question details

The user encounters an error message preventing them from forwarding emails in Microsoft Outlook.

How to Fix Outlook Forwarding Error: The Operation Failed

Product: Microsoft Outlook
Device & OS: not provided
Scenario: Forwarding an existing email message to another recipient.
Observed behavior: Outlook blocks the action and displays a pop-up error stating 'The operation failed'.

Before you start

Ensure your internet connection is stable and verify that your Microsoft 365 subscription is active before making changes to your Outlook settings.

Solution 1Recommended

Check and Remove Corrupted Inbox Rules

Corrupted email rules are the most common cause of the forwarding operation failure. Removing them often resolves the issue instantly.

Inbox rules automatically manage your incoming and outgoing emails. When a specific rule related to forwarding or moving messages becomes corrupted, Outlook fails to execute the action, resulting in 'The operation failed' error.

Open Rules and Alerts

Launch Microsoft Outlook. Click on the 'File' tab in the top-left corner, and then select 'Manage Rules & Alerts' from the Info menu.

Identify Suspicious Rules

Review the list of active rules in the 'Email Rules' tab. Look for rules related to forwarding, redirecting, or moving messages that you recently modified.

Delete and Test

Select the suspected corrupted rule and click 'Delete'. Click 'Apply' and 'OK'. Restart Outlook and try forwarding the email again.

Tip: If you are unsure which rule is corrupted, you can uncheck the boxes next to all rules to disable them temporarily. If forwarding works, turn them back on one by one to find the culprit.

Solution 2

Disable Conflicting COM Add-ins

Third-party add-ins can sometimes conflict with Outlook's core processes, preventing emails from being forwarded.

Solution 3

Enable Cached Exchange Mode

Enabling Cached Exchange Mode creates a local copy of your mailbox, which can fix syncing and operational errors.

Free Microsoft Office alternative

Experience a Bug-Free Workflow with WPS Office

If Microsoft Office errors are consistently disrupting your workflow, consider trying WPS Office. It is a highly compatible, lightweight, and free alternative that lets you create, edit, and manage documents, spreadsheets, and presentations seamlessly without complex software glitches.

1. Download the Installer: Visit the official WPS Office website and click the free download button for your operating system.
2. Install the Suite: Run the downloaded setup file and follow the straightforward on-screen instructions.
3. Open Your Documents: Launch WPS Office and instantly open your existing Microsoft Office files with perfect formatting preservation.

Fully compatible with Microsoft Office formats like .docx, .xlsx, and .pptxLightweight installation ensures smooth performance without system dragFamiliar user interface for a zero-learning-curve migrationAll-in-one suite combining Word, Excel, PowerPoint, and PDF tools

microsoft office alternative - wps office

Frequently Asked Questions

Why does Outlook only say the operation failed when I forward an email?

This specific error often triggers during forwarding if an active inbox rule related to sent items is corrupted, or if the original message's formatting is incompatible with your current reply/forward settings.

Will repairing my Outlook profile fix the forwarding error?

Yes, if the issue stems from a damaged OST file or corrupt profile configurations, running the built-in Microsoft Office repair tool or creating a new Outlook profile can restore normal functionality.

Can changing the message format help resolve the operation failed error?

Sometimes. Changing the message format from HTML to Rich Text can bypass hidden formatting conflicts that cause the forwarding operation to fail. You can adjust this in the Format Text tab while composing the forward.

Microsoft Office Error Codes