Keep in mind that Workgroups and Homegroups are completely different items
You got me there....is there a way to set up workgroups on Windows 7 or 8 or set up homegroups on routers?
- In Windows Explorer, if you type \\192.168.0.1 (or whatever the IP of the router is), what happens?
I get the login screen for the router.
- is there a way you can review the SMB logs on the router?
Not that I can see.
Some other things to check
On the windows 8.1 box, have you checked the following;
1.) Control Panel -> Administrative Tools -> Local Security Policy.
2.) Enable - Microsoft Network Client: send unencrypted password to third party SMB servers.
Done.
3.) When asked for credentials in user name type: servername\userame.Do not just type the username only.
Haven't seen that yet.
Also, you might check out the Asus Subforums, there are quite a few very knowledgeable people that are more familiar with this router model, and of course, there's also the RMerlin builds to consider.