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Hi,
We're getting the following error when trying to sign in with our O365 admin account into the SfB Control Panel:
Get-CSWebTicket : The underlying connection was closed: An unexpected error occurred on a send
The server is SfB 2015 Standard CU 11 on Server 2016
Kind Regards,
Andrew
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(112.00000000000001, 24%, 20%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EJM%3C/text%3E%3C/svg%3E)
This issue seems related to the TLS connection. In this way, we recommend you try to run the following command in PowerShell to enforce TLS 1.2.
[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(259.20000000000005, 77%, 35%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EBZ%3C/text%3E%3C/svg%3E)
This just saved my butt. I've been running Skype on-prem to Online migrations every Friday night for weeks, then all of the sudden, my script fails tonight. The code snippet you provided worked perfectly for me. Thanks for the assist!
Glad to see the above information is helpful to you!