Update Snow applications to use secure TLS versions

Title

Some Snow applications may continue to use older TLS versions, such as 1.0 and 1.1, even if these have been disabled on your network or computer.

This occurs because certain .NET Framework versions default to these less secure protocols. Use the steps below to ensure the applications prefer the most secure option available.

Option 1: Update the application configuration file

Make a backup copy of the .config file for the application before you begin, so you can roll back if needed.
Open the .config file for the application using a text editor such as Notepad++.
Inside the <configuration> element, add the following content (do not duplicate the <configuration> element):
```
<configuration>
  <runtime>
    <AppContextSwitchOverrides value="Switch.System.Net.DontEnableSchUseStrongCrypto=false"/>
  </runtime>
</configuration>
```
In a updated config, it will appear similar to the image below;
Save the file and restart the application.
- If the application fails to restart, you may have introduced a typo. Restore the backup copy from step 1 and try again.

Option 2: Set configuration in the Windows registry

Important: Modifying the registry can be dangerous and may cause system instability or data loss if not done properly.

Backup the registry before making any changes.
In Registry Editor on the application server, expand the tree to find the configuration node for the .NET Framework.
For each installed version, navigate to:
- For .NET Framework version 2.0.50727, go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework\v2.0.50727.
- For .NET Framework version 4.0.30319, go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\.NETFramework\v4.0.30319.
Under each version, create the following values:
- Create a new DWORD value named SystemDefaultTlsVersions and set its value to 1.
- Create a new DWORD value named SchUseStrongCrypto and set its value to 1.
Restart the application.

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Snow License Manager

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Case id: 00001065