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There is a Windows 7 desktop PC with a shared folder on the root of the C drive (C:\sharename). This folder has Everyone with read/write access.

A Windows 7 laptop normally has a drive mapped to this folder as \hostname\sharename

Today, this mapping failed. A troubleshooter showed the connection was being rejected by the desktop PC.

I unmapped it, and remapped the drive, authenticating as a different user, and specifying a hostname\localusername as the user account (a local user account on the desktop PC).

This also failed.

Can you think why the original drive mapping would fail if Everyone has read/write access?

Can you think why the new drive mapping would fail if the localusername on hostname has read/write access?

I don't think the solutions listed in this thread apply, as the folder is not an administrative share, I believe.

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Have you checked that there are no IP conflicts on the host PC and the client PC? I wouldn't use open access with the group everyone - it would be much securer for future references to specifiy accounts or account groups. Have you checked that both PCs have network connectivity. This article may help. Hope this helps.

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What do you mean by IP conflicts Jake? – Steve Oct 3 '12 at 3:44
Check that they aren't using the same IP (although a message would be shown in the taskbar), or checl that they are both configured correctly, eg, if one is and the others 169.254.x.x then you have an error there. – Jake Elsley Oct 3 '12 at 12:58
Thanks, there are no conflicts and they're in the same subnet. – Steve Oct 5 '12 at 8:29
Have you tried mapping to the IP address instead of the host name? – Jake Elsley Oct 5 '12 at 11:30
Also, if you ping the hostname from command prompt what does it say? Open command prompt, "ping" etc – Jake Elsley Oct 5 '12 at 11:31
up vote 0 down vote accepted

Uninstalling Sophos Firewall/AntiVirus and McAfee AntiVirus removed the symptoms, so one of them was causing the problem.

I could then browse both \hostname and \IP_address, and remap the drive.

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