You may not able to remove NetApp folders after uninstall NetApp Virtual Storage Console for VMware. The reason is customized fonts are still loaded by Windows. You need to delete all fonts values mapped to NetApp VSC folder in Windows register HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionFonts.
When you run Connect-NsxtServer in the PowerCLI, it may show "Unable to connect to the remote server". Because the error message is a little bit confusing with other login issues. It's not easy to troubleshoot. The actual reason is the NSX-T uses a self-signed certificate, and the PowerCLI cannot accept the certificate automatically. The fix is super easy. You need to set the PowerCLI to ignore the invalid certificate with the following command: Set-PowerCLIConfiguration -Scope User -InvalidCertificateAction:Ignore -Confirm:$false