Support1000

If you are unable to access computers with the operating system - Windows Vista Business Edition (or) Windows Vista Enterprise Edition (or) Windows Vista Ultimate Edition (or) Windows XP Professional (or) Media Center Edition via local area network

Follow the below mentioned steps on the computer which you are unable to access

Open Command Prompt in Elevated access if the operating system is Vista and if the operating system in XP, login to an account which has admin privilege and open the command prompt:  type –

Net user guest /active:yes

Net user guest *          (Hit Enter twice so the password is left blank)

exit

Start > Run> secpol.msc

Local policies-user rights assignments

User Rights Assignment - Access this computer from network

            Make sure that the Everyone user is included

User Rights Assignment -Deny access to this computer from network

Make sure it does not have any entry

Local policies-security options

Accounts - Guest account status

            Verify it is Enabled

Accounts - Limit local account use of blank passwords to console login only

            Verify it is Disabled

Network access - allow anonymous sid/name translation

            Make sure it is Enabled

Network access - do not allow anonymous enumeration of Sam accounts

            Make sure it is Disabled

Network access - do not allow anonymous enumeration of Sam accounts and shares

            Make sure it is Disabled

Network access - let everyone permission apply to anonymous users

            Make sure it is Enabled

Network access - sharing and security model for local accounts

            Change it to Classic - local users authenticate as them self         

After modifying all the Security Policy settings as per the above steps:

Open Command Prompt in Elevated access if the operating system is Vista and if the operating system in XP, login to an account which has admin privilege and open the command prompt:  type –

Gpupdate

-Giloo