How to get rid of a non accessible workgroup?

[Guest_imported]

Hi any helper,

There are two workgroup icons in my Entire Network. One of them is not accessible. How can I delete this unused icon? Thank you for any informations.

 

[bdux]

maybe one of the p.c's has the workgroup set on the network setting for workgroup. Check all p.c's id's and workgroup settings in network under control panel

 

[Guest_imported]

It is true. One of the pcs has two workgroupsets. One is the entire workgroup. And the another is only herself. It caused every pc saw two wgs. I couldn't delete or remove it. How can I do? Thank you.