![Microsoft Pushes Urgent Fixes Overnight As Threat Actors Compromise Exchange Servers Worldwide - Breaking Defense Microsoft Pushes Urgent Fixes Overnight As Threat Actors Compromise Exchange Servers Worldwide - Breaking Defense](https://sites.breakingmedia.com/uploads/sites/3/2021/03/2000px-Microsoft_Exchange_2019-present.svg_.png)
Microsoft Pushes Urgent Fixes Overnight As Threat Actors Compromise Exchange Servers Worldwide - Breaking Defense
![Outlook connection issues with Exchange mailboxes because of the RPC encryption requirement - Exchange | Microsoft Learn Outlook connection issues with Exchange mailboxes because of the RPC encryption requirement - Exchange | Microsoft Learn](https://learn.microsoft.com/en-us/exchange/troubleshoot/exchangeserver/client-connectivity/media/outlook-connection-issue-caused-by-rpc-encryption-requirement/select-exchange-node-2010.png)
Outlook connection issues with Exchange mailboxes because of the RPC encryption requirement - Exchange | Microsoft Learn
![Outlook connection issues with Exchange mailboxes because of the RPC encryption requirement - Exchange | Microsoft Learn Outlook connection issues with Exchange mailboxes because of the RPC encryption requirement - Exchange | Microsoft Learn](https://learn.microsoft.com/en-us/exchange/troubleshoot/exchangeserver/client-connectivity/media/outlook-connection-issue-caused-by-rpc-encryption-requirement/select-encrypt-data-between-outlook-exchange.png)
Outlook connection issues with Exchange mailboxes because of the RPC encryption requirement - Exchange | Microsoft Learn
OWA for on-prem server stopped working after updating certificate in on-prem exchange server - Microsoft Community Hub
How to fix Outlook to The connection to Microsoft exchange is unavailable. Outlook must be online or connected to complete this action- Internal connect
![Outlook connection issues with Exchange mailboxes because of the RPC encryption requirement - Exchange | Microsoft Learn Outlook connection issues with Exchange mailboxes because of the RPC encryption requirement - Exchange | Microsoft Learn](https://learn.microsoft.com/en-us/exchange/troubleshoot/exchangeserver/client-connectivity/media/outlook-connection-issue-caused-by-rpc-encryption-requirement/select-exchange-node-2013.png)