According to Microsoft, this means that only Internet Explorer 11 will continue to get updates, as it is the most recent (and last) version of Internet Explorer. IE11 is supported on Windows 7, 8.1 and 10 so if you are using those operating systems, you should definitely upgrade to IE 11.

Note: Apparently Microsoft will still support IE 9 on Vista SP2, should you still be using it.

If you are still using an older version of Windows with an older version of IE, now is the time to stop. I’d recommend you upgrade to Windows 10 as soon as you can; it really is quite nice. As is the new Edge browser.

If you are stuck on an older Windows OS, at least consider using Chrome or Firefox which are both updated regularly.

We are not yet making any changes to our web browser support, so Xojo web apps (as of 2015r4) continue to be  supported on Internet Explorer 9+.

This is less than ideal as more and more web sites require newer, more modern versions of Internet Explorer. This can result in pages you want to display not working properly or not even showing at all. And that results in much sadness for anyone using your app.

Luckily there is a simple change you can make to the Registry to instead use a different Internet Explorer rendering engine. Here is the Registry key:

[HKEY_CURRENT_USER\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION]
“MyAppName.exe”=dword:00002af8

You can configure the tool you use to create your installer to create this Registry key for you.

For your Xojo apps, you can use this code to modify the Registry:

#If TargetWindows
 // This code handles both 64 and 32-bit builds
 Dim reg As New RegistryItem("HKEY_CURRENT_USER\SOFTWARE\Microsoft")
 reg = reg.AddFolder("Internet Explorer")
 reg = reg.AddFolder("Main")
 reg = reg.AddFolder("FeatureControl")
 reg = reg.AddFolder("FEATURE_BROWSER_EMULATION")
 
 // Source MS documentation: https://docs.microsoft.com/en-us/previous-versions/windows/internet-explorer/ie-developer/general-info/ee330730(v=vs.85)
 reg.Value(App.ExecutableFile.Name) = CType(11000 , Int32)
#Endif

Once this change is made, your app will use the newer rendering engine.

For more information, refer to the HTMLViewer page in the documentation.