Outlook Classic: Email sending issue resolved

Posted on 2026-04-06 by guenni

There was an issue sending emails in Outlook Classic when using a mailbox on outlook.com. This caused the operation to trigger an NDR error 0x80070005-0x0004dc-0x000524. The issue has since been resolved. I have added this information to the German post Outlook Classic: E-Mail senden scheitert mit 0x80070005-0x0004dc-0x000524 [use build in translation to read the article in your language].

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