A username and password may be required to access a network computer to share files or connect to the internet. However, it is not always necessary and a computer on a workgroup may not ask for a password. In case a computer on a workgroup asks for a password when trying to connect to it, some settings may have been changed by accident. To rectify the issue, the "password protected sharing" has to be turned off from the Network and Sharing Center of the Windows operating system. The change in the settings can take effect without a restart of the computer.
I have several PCs and laptops connected to an hub along which I can share files and connect to the internet. A couple of days ago whenever I tried to access one of the computers from another desktop, a box popped up saying "Connect to Computer...- then asked for user name - this is already completed with .... COMPUTER...\Guest ............." It then asked for a password. I am not aware that there is a password on that computer and as I mentioned everything has been working fine.
1. Click Start
2. Right click Network
3. Choose Properties (opens up the Control Panel\Network and Internet\Network and Sharing Center)
4. Click "Choose homegroup and sharing options" in the lower list (this opens "Control Panel\Network and Internet\Network and Sharing Center\Homegroup")
5. Click "Change advanced sharing settings..."(this opens "Control Panel\Network and Internet\Network and Sharing Center\Advanced sharing settings")
6. The setting right before the last one is: "Password protected sharing"
7. Choose "Turn off password protected sharing" and you are good to go "without any restarts" and stuff.