This solution worked!
Step1:
C:Program Files (x86)Microsoft SQL Server Management Studio 18Common7IDECommonExtensionsPlatformMicrosoft.VisualStudio.MinShell.Interop.pkgdef
Rename and make sure this file does not have the .pkgdef
extension anymore. Or remove the file.
Step2:
Remove the following Registry Key (which is created at SSMS 18 Startup using the .pkgdef
file mentioned above):
HKEY_CURRENT_USERSOFTWAREMicrosoftSQL Server Management Studio18.0_IsoShell_ConfigRuntimeConfigurationdependentAssemblyindingRedirection{8BC7AF31-B6DA-4B97-8B36-F0500DECB147}
From now on SSMS 18 will start.
Source: SQL Server Management Studio 18 GA (15.0.18118.0) not compatible with .NET Framework 4.8?? {toggle_previous_statuses}
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