Windows 10 comes with both Internet Explorer and Edge.
You may have chosen to install a third party browser also. For example, Google Chrome.
Can you confirm which browser you cannot access HTTP sites with, and also whether the issue persists with Internet Explorer or Edge.
You also mentioned you cannot download updates? If you mean via the Windows Update, then it may be worth running the Windows Update Troubleshooting tool, access by clicking Start | Settings cog | Update & Security | Troubleshoot (in the left pane) | Windows update (below the Get up and running section).
You could let us know how that goes too please.