Hi,
Thanks for posting here. HomeGroup has been removed from Windows 10 (Version 1803) and this functions rely on protocol called SMBv1 and Microsoft decided to partially disable this protocol for security reasons. Please kindly note that there are better ways to achieve the same results, you can still do share printers and files by using features that are built into Windows 10.
For details about HomeGroup, see HomeGroup from start to finish. This article includes a note about the removal of HomeGroup.
Changes to file sharing over a network in Windows 10 describes how the update affects file sharing.
For information on sharing files without using HomeGroup, please see Share files in File Explorer.
Instructions for sharing a printer without HomeGroup, please see Share your network printer.
Hope my answer will help you. Thanks!
(Please don't forget to accept helpful replies as answer)
Best Regards,
Sunny