Qlik Sense Enterprise on Windows fails to install or upgrade with an error similar to:
Error 0x80072ee7: Failed to send request to URL: http://go.microsoft.com/fwlink/?LinkId=397708, trying to process HTTP status code anyway.
[08B8:0958][2017-08-28T11:10:34]e000: Error 0x80072ee7: Unknown HTTP status code 0, returned from URL: http://go.microsoft.com/fwlink/?LinkId=397708
For information on how to retrieve and read install logs, see How to read the installation logs for Qlik products.
Environment
Resolution
Install the correct .Net Framework version for the Qlik Sense Enterprise on Windows version you are installing/upgrading to. See the official Help Site and the System Requirements of your chosen version for details on what .NET Framework version you are looking for.
Cause
The installation package will attempt to automatically install the required .NET Framework. If this fails (internet connectivity, permission issues, etc...) then the installation package errors out and .NET Framework needs to be installed manually.