One of the key reasons Outlook is
preferred by so many home and professional users across the world is its
security features. But these features which are put in place to protect your
data sometimes meddle with the normal working of the application. The basic
email send-receive Outlook functionality often suffers at the hands of messed
up security settings and protocols. Here in this post, we will explain the
methods to resolve Outlook Error code 0x8004210a
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