Sending, receiving, and organizing email in Outlook.com
If you mean Outlook.com’s Message handling settings, try this:
- Go to Settings → Mail → Message handling.
- Change Strict to Standard.
- Click Save.
- Sign out of Outlook and sign back in.
If it keeps reverting to Strict, try clearing your browser cache/cookies or using another browser. Microsoft also recommends signing out, clearing the cache, closing the browser, and signing in again for Outlook.com settings issues.