Today at work I had the need to change the regional settings for an IUSR as the data and time format were set to US not the UK. I had found a page which told me how to do this for the standard IUSR_<machine-name> but as the website with the issue wasn’t using the standard IUSR.
The website I found the information on was Fresh mango

Which is followed but it wasn’t all the information I needed so I experimented as best I could and found that if I type cscript adsutil.vbs get w3svc/X/root/anonymoususerpass
with X being the identifier for the website it would give me the password I wanted or at least I thought so. With the credentials now available I tried to log in and change the regional settings but the password wouldn’t let me in.
so what should I do now?

Well I decided to take a jump which isn’t always the best idea but this is what I have done.
within computer manager I located the IUSR I was after and reset the password for the user.
Opened up regional settings as that user by holding down the shift ket and clicking with the left mouse button on regional settings.
changed the regional settings and closed the window.
Within DOS I inputted the following command “cscript adsutil.vbs set w3svc/X/root/anonymoususerpass <password>
I then checked to make sure the password had been accepted by running this command again cscript adsutil.vbs get w3svc/X/root/anonymoususerpass “although it does print it back when the it has been accepted”.

Then I checked the website to ensure it was still working and it was phew but has the date change I well find out when I reboot the server in the next couple of days and let you know.