#disabling UAC all together requires a reboot
#But, you can disable the prompts without rebooting or loging out
#We do this by changing registry values 

#disable UAC Prompt
reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v ConsentPromptBehaviorUser /t REG_DWORD /d 0 /f
reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v ConsentPromptBehaviorAdmin /t REG_DWORD /d 0 /f