REGEDIT4
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\ActiveDesktop]
"NoChangingWallPaper"=-
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]
"NoViewContextMenu"=-
"NoDispBackgroundPage"=-
Doubleclick the file and confirm you want to merge it with the registry.
Reboot and check under Properties of your desktop if the Browse button is usable again.
Regards,