Posts in Exchange Online

How to Fix “EWS Request Blocked” Errors in Exchange Online Legacy Mail Clients

Cloud Computing Email Administration Enterprise IT Enterprise Security Exchange Online IT Administration Microsoft 365

Exchange Online administrators increasingly encounter the frustrating “EWS Request Blocked” error. Unfortunately, this issue often appears without warning and immediately disrupts email access for users relying on older applications. As Microsoft continues strengthening security across Exchange Online and Exchange Web Services, many legacy email clients, third-party applications, and custom integrations face compatibility challenges. Consequently, organizations that have not modernized their email infrastructure frequently experience blocked connections, synchronization failures, or authentication errors. The good news is that most EWS-related issues can be diagnosed and resolved. However, administrators must first understand why… Read More

How to Enable Cross-Tenant Message Recall in Exchange Online

Cloud Security Email Administration Exchange Online Microsoft 365 PowerShell

Accidental email delivery causes immediate panic across IT departments and corporate environments. Fortunately, Cross-Tenant Message Recall revolutionizes how administrators handle outgoing communication errors across partner boundaries. Furthermore, Exchange Online message recall now extends beyond single organizational boundaries into external partner environments. Historically, email recall worked exclusively within one internal Microsoft 365 tenant boundary. However, modern business relies heavily on external partners, subsidiaries, and vendors. Consequently, sending sensitive attachments to external partners created immense security risks without recovery options. Microsoft introduced cross-tenant recall functionality to resolve these multi-tenant enterprise communication challenges…. Read More