Classic Outlook tells you to open the email to "read its contents and verify your credentials," but that doesn't work.

The problem happens for users who encrypt the email using the settings under the email File dialog (File > Encrypt), Microsoft further explained. To prevent the issue, there are two possible ...

Microsoft is working to fix an Exchange Online service outage that intermittently prevents users from accessing their ...

CISA adds two vulnerabilities affecting Microsoft Office and HPE OneView to its KEV list, urging agencies to patch by January ...

Microsoft has confirmed a known issue that prevents recipients from opening encrypted emails in classic Outlook.

Threat actors are abusing misconfigured MX records and weak DMARC/SPF policies to make phishing emails look internal, ...