Hi Kisuru,
1. Is this the first time you are installing Turbo Tax on the computer?
2. Are you able to install other programs on the computer?
While searching on the TurboTax website I came across a solution for the error message which you have already tried as you mentioned.
Error 1606: Could not access network location
http://turbotax.intuit.com/support/kb/installing/errors/7164.html
I would suggest that you download and install the windows installer cleanup utility later launch the cleanup utility from the start menu and then remove the entries for the software then restart the computer for changes to take effect and now try reinstalling the software and check.
Description of the Windows Installer Cleanup Utility
http://download.microsoft.com/download/e/9/d/e9d80355-7ab4-45b8-80e8-983a48d5e1bd/msicuu2.exe
For additional support try posting your query in the Turbo Tax community forums.
https://ttlc.intuit.com/app/full_page
Hope this helps!
Halima S - Microsoft Support.
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