Re: [W7SP1 x64] KB4048597 fails to install
Remove Update Manually
1. Click on the Start button and in the search box, type Command Prompt
2. When you see Command Prompt on the list, right-click on it and select Run as administrator
3. When command prompt opens, copy and paste the following command into it, press enter
wusa /uninstall /KB:4015549
If there's an error, or a message that the update is not installed, please do a registry scan for the update with FRST and provide SearchReg.txt