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Error ERR_SPDY_INADEQUATE_TRANSPORT_SECURITY while accessing the Web Console using Chrome Browser

Updated October 5, 2018

Overview

The following error occurs when accessing the Orion Web Console using Google Chrome:

ERR_SPDY_INADEQUATE_TRANSPORT_SECURITY

Environment

  • IIS 8.0, Windows Server 2016

 

Cause 

This is a known issue with the Chrome Browser.

 

Resolution

  1. Open the registry editor.
  2. Navigate to HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\HTTP\Parameters
  3. Create the following entries:

EnableHttp2Tls REG_DWORD 0

EnableHttp2Cleartext REG_DWORD 0

  1. Reboot the IIS Server.

 

 

 

 

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