Windows Azure Biztalk Services: Windows Biztalk Adapter Service Setup wizard ended prematurely

While installing windows biztalk adapter service, you may get the following error.

Microsoft BizTalk Adapter Service Setup Wizard ended prematurely because of an error.  Your system has not been modified.  To install this program at a later time, run Setup Wizard again. 

This is due to insufficient privileges to the access "C:\Windows\System32\inetsrv\config". This may be due to User access control(UAC) in your machine or User doesn't have full permissions to that folder. To resolve this issue

1. Stop UAC and grant permission to that user to config folder
2. Open the command prompt in run as administrator mode and run the Msiexec command as follows.

msiexec /i BizTalkAdapterService.msi /l*vx install_log.txt