"Workgroup not accessible" solution:

1. Give permissions to any type of firewall or disable iti f you dont have firewall don't worry and all computer must with the same workgroup.

2. Go to Start->Run->cmd and type "ipconfig /all" , in Node Type it should say Hybrid or Mixt.

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If not says Hybrid or Mixt close that window and go to Start->Run->regedit and go to:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Netbt\Parameters

and in the value NodeType and DhcpNodeType if they exist, change the value to 8 Hexadecimal.

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Reboot.


3. Open My Computer then in Tools->Folder Options->View->then Disable "Use Simple File sharing"

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4. Right click on a folder you want to share->SharingandSecurity->Sharing->enable"Share this Folder"-> Permissions , in that window it should
then see the permissions of the folder there it should have "Everyone"
and then it must have enabled Full Control, Change, Read.

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5. Finally Right click on my computer->Manage->Local Users and Groups->Users->
then in the right in the "Guest" account right click->properties and disable "Account is disabled".

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Reboot

Repeat this steps with all computers.

It should work , that worked for several people, so any doubt Reply.