Homegroup no longer working - confused!

I am running a Windows 7 64-bit desktop on a home network connected to 2 other desktops (one with the same OS as mine, the other with Win 7 32-bit) as well as 2 other laptops through a wireless router. My homegroup was working perfectly with all 5 computers until this morning.

I attempted to connect from my 64-bit system to the 32-bit desktop (as I do on a daily basis), however, I could no longer access any of the shared folders and Windows said on both computers that there was no homegroup set up. This is strange since we have been using the homegroup successfully for many months.

I ran the homegroup troubleshooter on both computers and synched the clocks as suggested to no avail.

I attempted to create a new homegroup on both computers but neither homegroup could see each other - each computer kept wanting to create a new homegroup. I subsequently left the newly created homegroups and rebooted both computers. I also reset both wireless cards and the router.

After searching on forums for an answer, I realised that one of my homegroup services had been stopped on my 64-bit machine, so I started that service again and rebooted.

Now when I log onto my 64-bit computer (named Jane for argument's sake) and attempt look at my homegroup settings, it says Jane-PC has created a homegroup on this network (see screenshot). Since I am Jane, this is weird; although it says I have created a homegroup, I can neither join, leave or enter the correct password for this homegroup. I have tried to enter the old as well as the new homegroup passwords. I hope this makes sense!

I am stuck, as now Jane-PC and all of my other computers can see the new homegroup but none of us can join it!

Is there any way of completely removing all records of a homegroup and starting again? e.g. in regedit?

Once you get into the problem of "can't leave the Home group" you need to perform the fix below.


The fix for this problem seems to be Deleting the file idstore.sst under C:\windows\serviceProfiles\LocalService\AppData\Roaming\PeerNetworking

You may need to do this on each of your homegroup machines.


Once everything at peer Networking Grouping is running you may also need to do this...

Start the Task Manager
Click on the service Tab
Find the "HomeGroupProvider"
and then stop the service.


You may need to go back into services and enable Peernetworking again after the fix. Don't forget to restart all machines making the adjustments.

After this you should be able to create a new Home group and will be able to join the new Home group from your other networked machines. :)

As far as I'm aware, if every computer leaves the homegroup it no longer exists.

In essence, you could do just that and create a new homegroup on your main computer with a fresh home group password before getting your other computers to join the new homegroup.

Thanks for your replies and suggestions!
My HomeGroup is back up and running now :) I removed the idstore.sst files on my computers and realised one of the HomeGroup services had been stopped (not sure why). I restarted the service, rebooted and all of a sudden I could create a new HomeGroup.

You're very welcome.

Pleased to see you're up and running again and thanks for the update.

The solution may help others with a similar problem.