So this is the problem. I download and run the Windows ISO Downloader , version is up to date (6.02) . Whenever I pick any other windows option besides windows 7 , the tool greys out and crashes. 

I have went through the FAQ's and I do not have the lines in the HOSTS file that should be removed, I disabled adblock when downloading, I have turned off firewall , I do not have an antivirus program installed. TLS 1.2 is enabled. I started the tool as administrator and have IE 11 and .NET framework 4.7.1 installed 
 

I've seen this issue pop up quite frequently recently. I suspect there's a new root cause that can cause this.

What's your Windows and IE version? I'll have a try and replicate the issue.

IE version: 11.0.9600.18977
Windows 7 Ultimate SP1

Hope this helps.

Thx! I'll have a look at it shortly, after dealing with the GDPR nightmare...

Hi. 

I present the same problem now on I have everything installed and update and show me the same...  how can i solve the problem when i select the Window 10 tab please i need some help with thins

Edited October 29, 20232 yr by LeonFabio68

On 21/4/2018 at 16:51, Jan Krohn said:

He visto este problema aparecer bastante a menudo últimamente. Sospecho que hay una nueva causa raíz que puede causar esto.

¿Cuál es tu versión para Windows e IE? Intentaré replicar el problema.

me esta pasando exactamente lo mismo que a esta persona que devo hacer

If the Windows ISO Downloader is crashing on launch or displaying a persistent "Please check your internet connection" error, the issue is almost always related to TLS 1.2 enforcement or a missing WebView2 runtime.

Microsoft's CDN endpoints recently deprecated older TLS cipher suites, causing .NET applications that default to older SSL3/TLS 1.0 protocols to fail the handshake.

Here is the step-by-step fix:

1. Enable Strong TLS 1.2 Cryptography in Registry

Open PowerShell (as Administrator) and run these two commands to force .NET Framework to use system-default modern TLS:

# For 64-bit .NET
Set-ItemProperty -Path 'HKLM:\SOFTWARE\Microsoft\.NETFramework\v4.0.30319' -Name 'SchUseStrongCrypto' -Value 1 -Type DWord
Set-ItemProperty -Path 'HKLM:\SOFTWARE\Microsoft\.NETFramework\v4.0.30319' -Name 'SystemDefaultTlsVersions' -Value 1 -Type DWord

# For 32-bit (WOW6432Node)
Set-ItemProperty -Path 'HKLM:\SOFTWARE\WOW6432Node\Microsoft\.NETFramework\v4.0.30319' -Name 'SchUseStrongCrypto' -Value 1 -Type DWord
Set-ItemProperty -Path 'HKLM:\SOFTWARE\WOW6432Node\Microsoft\.NETFramework\v4.0.30319' -Name 'SystemDefaultTlsVersions' -Value 1 -Type DWord

2. Install / Repair Microsoft Edge WebView2 Runtime

The tool uses WebView2 to resolve Microsoft's dynamic token generation. If you are on an older build or stripped Windows ISO, download and install the Microsoft Edge WebView2 Evergreen Bootstrapper from Microsoft's official developer portal.

3. Clear Internet Explorer / WinINet Cache

In Windows Run (Win + R), type inetcpl.cpl, go to the Advanced tab, click Restore Advanced Settings, and ensure Use TLS 1.2 and Use TLS 1.3 are checked.

Restart the tool after applying these steps and the ISO list will load properly without crashing.