How to disable the ‘Enter Network Password’ prompt.- Windows 7

SOLUTION:

a) Open Control Panel and ‘System and Security’ then click on ‘Administrative Tools’ and ‘Local Security Policy’.

b) Expand ‘Local Policies’ and select ‘Security Options’.

c) Double-click on ‘Network access: Sharing and security model for local accounts’, choose Guest only option from drop down menu and click OK.

d) Double-click on ‘Accounts: Limit local account use of blank passwords to console login only’, which is enabled by default. Disable this option and click OK.


At the same time you may want to disable password protected sharing as well
thats Control Panel - Network and Internet - Homegroup - Change advenced sharing settings -
Password protected sharing choose to turn off save changes