(WinToolkit) Question About Installing Hotfix Updates In GDR vs LDR/QFE Mode in Win Toolkit Posted January 9, 2015 · Edited January 9, 2015 by Enigma83 Well.....thanks for letting me know. I decided not to integrate the hotfixes yet. But I did integrate some .NET updates in GDR mode, which is the default in WTK. It worked fine in a VM, Windows Update showed only one update for .NET 3.x and 4.x Should I reintegrate them in LDR/QFE mode then use the resulting ISO to reinstall Windows on my machine (not a VM)? Or is it nothing to worry about? Just want to be sure that integrating them in GDR mode wont adversely affect my system.And just to be clear, I *DO* need to use LDR mode for the hotfixes, correct?Thanks!