EXO V2 module, earlier .NET versions and pesky TLS1.0/1.1

It’s been a while that the new module for managing Exchange Online using PowerShell.If not yet aware, please check out how to Use the Exchange Online PowerShell V2 module.

It’s not perfect (yet!), but huge improvements and Microsoft is working hard to get the module improved.

On my transition to the new module, I was made aware of connectivity issues by some colleagues:

New-ExoPSSession : An error occurred while sending the request..
At C:\Program Files\WindowsPowerShell\Modules\ExchangeOnlineManagement\0.3582.0\ExchangeOnlineManagement.psm1:401 char:30…

PSSession = New-ExoPSSession -ExchangeEnvironmentName $ExchangeEnviro …

But the issue existed ONLY when using the parameter -Credential

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Hardening SSL/TLS and Outlook for Mac

As part of hardening of servers, which publish services and in times of Poodle, you might want to disable SSL (if not already done). You can test your client here and your server/service endpoint here.

Most likely you already disabled SSL on your server, but if not:

Can you do it right away?

Of course you can do it right away. Is there a caveat? It depends….

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