A Windows update may cause an error in Windows 7 that looks something like this:No FontFamily element found in FontFamilyCollection that matches current OS or greater:Windows7SP1
The workaround is to uninstall KB4055532 until Microsoft releases a fix for it. The FontFamily error also appears as KB4055002, so uninstall this also.
To uninstall an update, go to Control Program – Programs – Programs and Features – Installed Updates. Find the affected updates. Right-click – Uninstall.