"You first must install one of the following versions of .NET Framework" when you run the IdFix tool
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When you try to run the IdFix DirSync Error Remediation Tool in your on-premises Active Directory Domain Services (AD DS) environment, you receive the following error message:
To run this application, you first must install one of the following versions of .NET Framework.
This issue occurs if the Microsoft .NET Framework 4 isn't installed on the computer. The IdFix tool requires the .NET Framework 4 to run.
To resolve this issue, install the .NET Framework 4 on the computer on which the IdFix tool is installed. The .NET Framework 4 is available from Microsoft .NET Framework 4 (Web Installer).