User&Group Permission

Right click folder -> Properties -> Security tab

This is where the User and Group permission located

If you modify this thing incorrectly
A lot of funny error might occur like

• Error 1772 Window Installer package
• Cannot open/delete/edit the folder ( Access denied )
• Ms-paint is running ( in task manager ) but not displaying

Above are all error I encounter while this User and Group setting is incorrect
And the folder was on my C:\WINDOWS

MANUAL WAY

To solve this,
Well... this is how I solve it

I fix it manually where I put again all my User&Group
The User&Group should be the same with the User&Group in the C:\Program Files

To add a Correct user
click the" advance" in the "security" tab


Using CMD to set up the ACL

type "cacls" for futher detail
but this is normal operation

make sure the path is in C:\>

then type exactly like this cacls WINDOWS /g "%usename%":F

well, the :F means "Full control"
the %username% is your username


Thats all,
hope its helpful... guess not