Thanks for your reply! I have never used HomeGroups. I have always have my own LAN group. And I have never had an issue sharing folders between LAN PCs. But, I just changed my router and this problem popped up. Maybe I will change my approach and use HomeGroups.Hi,
Did you remember to setup W10 Homegroups for home networking? This is really important to do, otherwise, without a network server in your home or apartment which very few people have, you have to rely on setting up P2P (Peer-to-Peer) folder sharing through your LAN. This requires many steps, and takes intermediate to expert networking skills which few home users have. That's why Microsoft created the Homegroups concept back in 2009 in Windows7. I would simply pick a PC, such as PC1 to be the Master, install your Homegroup, and then take the Homegroup password created on PC1 over to PC2, pull up Homegroups and use the password from PC1 Homegroups and enter it; and all will work without having to use passwords!
Here's a tutorial on how to setup Homegroups:
How to Set Up a Homegroup Network in Windows 10 - For Dummies
Post back if you have further questions.