Hi Josh. I'm Greg, an installation specialist and 8 year Windows MVP, here to help you.

I would remove all PC's from the Homegroup in HomeGroup Settings - type Homegroup in Start Search.

Restart each PC. Start up the primary PC and turn on the HomeGroup. Then do the same for the others and add each back with the password for the primary.

But Homegroup is being phased out so if you can't get it to work then I'd try File Sharing: https://pureinfotech.com/setup-network-file-sha...

I hope this helps. Feel free to ask back any questions and let us know how it goes. I will keep working with you until it's resolved.

how do i leave a homegroup that none of my computers are in?

What sometimes works is to type Services.msc in start Search, open Services app, scroll down to the two Homegroup services, choose each to Stop the service, then set Startup Type to Disabled. Restart PC. Do this on each PC.

Now go back and enable each leading up to the main PC, see if it issues a HomeGroup password to use to set up the Homegroup.

If not run the Homegroup Troubleshooter in HomeGroup settings.

Please understand that HomeGroups is broken and Microsoft is making plans to get rid of it in the next release. You are likely seeing early signs of these changes. Please find alternative means of sharing files between systems. Your best option is to use a basic peer to peer workgroup network with Public File Sharing and Permissions. Learn more:

https://www.groovypost.com/howto/connect-netowr...

and

https://www.groovypost.com/howto/share-files-st...

https://www.groovypost.com/howto/change-network...

In order to delete a homegroup you have to leave it first on all machines but the one that created the homegroup.
Keep the machine running where the homegroup resides and shut down the rest of the machines.
Go to C:\windows\ServicesProfiles\LocalService\AppData\Roaming\PeerNetworking
Look for the files that are named idstore and delete them all.
If you can't delete them cause they are locked then right click your start button and go to Run and type services.msc.
When that opens go to the Homegroup services and stop and disable them and then try and delete the idstore files again.
Once done reboot your machine and then you will see that the homegroup is gone.

Press Windows key + R
Type or copy and paste:

C:\windows\ServicesProfiles\LocalService\AppData\Roaming\PeerNetworking

Search for the files that are named idstore and delete them all.

Press Windows key + R
Type: services.msc
Hit Enter

Scroll down to Homegroup services then stop and disable them, Proceed to try and delete the idstore files again.

Reboot to see if Homegroup is gone

Open Start > Settings > Network & Internet > Status
Scroll to the bottom
Click Network and Sharing Center

Click Change advanced sharing settings
Expand All Networks
Under Password protected sharing

Switch between 'Turn on password protected sharing and Turn off password protected sharing'

Then choose 'Turn off password protected sharing'

Then click 'Save changes'

Please see if the yellow tip in Step 4 helps:
https://www.tenforums.com/tutorials/50310-leave...
You might have to do it on all computers.