Latest 1809 update today....HOMEGROUP missing Win10 Pro....

Hi, this may make it clear when it was removed:
Create Homegroup in Windows 10 | Tutorials

Starting with Windows 10 build 17063, the HomeGroup service is no longer operational in Windows 10. The user profile used for sharing and the file/folder/printer shares will continue to work.

Here are recommended alternatives to HomeGroup for you to get the best file-sharing experience in Windows 10 going forward:

• File Storage:
  
  • OneDrive is a cloud-first, cross-device storage and collaboration platform for all of the pieces of data that matter most in your life – like your files, your photos, your videos, and more.
  • OneDrive Files On-Demand takes cloud file storage a step further, allowing you to access all your files in the cloud without having to download them and use storage space on your device.
  
  
• Share Functionality: For those who prefer not to use the Cloud to connect their devices, the Share functionality for folders and printers allows you to see the available devices and connect them to and from other PCs on your home network.
• Easier Connection: No more remembering cryptic HomeGroup passwords in order to connect to another PC. You can now simply connect through your Microsoft Account email address across devices.

https://support.microsoft.com/en-gb/...egroup-removed

That is because it was removed.