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/exchange-encryption.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)