Unable to log in to network computer

Each time I try to log in to a particular networked computer ( #3) from Computer #4 , a windows security essentials pop up and asks for credentials even though I checked on allowing access without passwords in computer #3 . In any case when I typed in the user name and password for computer ( #3) , I keep getting error indicating wrong user or password. However the reverse from computer #3 to #4 is OK . Please advise what is going on and how to fix? BTW all my networked computers do not require password and I am not using workgroup or homegroup just simply network shares. Tks

Even though you have "allow access" without passwords checked, sometimes Windows 10 will still need a username the first time you access those shares. so, from computer #4 try to access computer #3, when prompted for credentials use a user name/password from computer #3 like this: computernumber3\username and then put the password in the password field. Hope this helps.

play2mefish said:

Even though you have "allow access" without passwords checked, sometimes Windows 10 will still need a username the first time you access those shares. so, from computer #4 try to access computer #3, when prompted for credentials use a user name/password from computer #3 like this: computernumber3\username and then put the password in the password field. Hope this helps.

Adding the computer name before the user name did the trick. Thanks