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What error are you getting?
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setup a homegroup with 4 computers (windows 7 Pro) &nbsp;Every few days everything stops working. &nbsp;Multiple erros. &nbsp;Link won't work or when you go into the shortcut for a shared folder on the computer that created the homegroup there is nothing in there. &nbsp;Has to be something in the office where the computers are. &nbsp;I have NEVER had an issue like this. &nbsp;So, now I decided to start from scratch. &nbsp; &nbsp;I left the homegroup on all the computers so yesterday they said create a homegroup. &nbsp;Now this morning it shows that the 1st computer I created the homegroup for needs to join the homegroup. &nbsp;Not sure if you can uderstand what I' saying. &nbsp;I didn't create another homegroup on this pc but it says I need to join it. &nbsp;It's asking the computer that created the homegroup to join the homegroup. &nbsp;When I try to do this I can't. &nbsp; Errors out. &nbsp;That is where I will start on this issue.
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setup a homegroup with 4 computers (windows 7 Pro)  Every few days everything stops working.  Multiple erros.  Link won't work or when you go into the shortcut for a shared folder on the computer that created the homegroup there is nothing in there.  Has to be something in the office where the computers are.  I have NEVER had an issue like this.  So, now I decided to start from scratch.    I left the homegroup on all the computers so yesterday they said create a homegroup.  Now this morning it shows that the 1st computer I created the homegroup for needs to join the homegroup.  Not sure if you can uderstand what I' saying.  I didn't create another homegroup on this pc but it says I need to join it.  It's asking the computer that created the homegroup to join the homegroup.  When I try to do this I can't.   Errors out.  That is where I will start on this issue.

can't figure out why a homegroup cannot be joined

Windows 7 is an operating system from Microsoft. Features include multi-touch support, a redesigned Windows Shell with a new taskbar, referred to as the Superbar, a home networking system called HomeGroup, and performance improvements.

Windows 7

A personal computer is a general-purpose computer whose size, capabilities and price make it useful for individuals, and is intended to be operated directly by an end-user with no intervening computer time-sharing models that allowed systems to be used by many people, usually at the same time. Personal computers may be connected to a local area network (LAN), either by a cable or a wireless connection, and through that to the Internet. A personal computer may be a laptop computer or a desktop computer running an operating system such as Windows, Linux or Macintosh OS.