Microsoft admits that some web-based Outlook users cannot send email with attachments
Thanks to CTOnews.com netizen Alejandro86 for the clue delivery! CTOnews.com, Nov. 8 (Xinhua)-- Microsoft announced on Monday that some Outlook.com users may encounter a "Error code 5505.7.520 Message blocked" error when sending email with attachments.
"some users may not be able to send emails with attachments through their Outlook.com mailboxes," Microsoft said.
CTOnews.com Note: one of Microsoft's current solutions is for affected users to upload attachments to OneDrive and then share links to OneDrive files with recipients.
When composing an email, users click the add attachment button and select "OneDrive" to add previously uploaded files, or click the "upload and share" button to add attachments to their online storage.