Error connecting Azure Powershell to Azure subscription

Hi,

When I am trying to run Add-AzureRmAccount from my powershell, I am keep on getting below error

I tried history, cookie delete, powershell reinstallation everything. Even Add-Azure account gives same error and I am unable to connect my subscription via powershell. I tried several settings from IE --> restarts but error is still there. Let me know how I can fix it.

Thanks