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Windows 7 Home Premium.

So, occasionally I have to connect to a Windows share for work from home, and I mapped this share to a Q drive (Convention at the company is to map this share to Q).

I'm not sure when this happened, but for some reason, now Windows shows Q as a local drive:

and when I try to access it, I get "Q:\ is not accessible"

How do I correct this?

Not sure if it's relevant, but I don't always have access to the network the share is on (it's accessed via VPN). But it happens even when I have access to the share (when connected via VPN).

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Try this from a command prompt:

net use q: /delete

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This did not work, unfortunately, I get: The network connection could not be found. More help is available by typing NET HELPMSG 2250. The help message is: The network connection could not be found. – Greg Bair Apr 17 '12 at 3:16

Some versions of MS Office install via a "Click-to-Run" process that creates a kind of virtual machine on your computer and puts it on a Q drive (which can interfere with your own use of Q for a mapped drive). Sounds like you might have installed this thing.

I've got a page on my PPT FAQ site that explains more, and gives some suggestions for converting a CTR version of Office 2010 to a real, less annoying one.

Office 2010 Click-to-Run http://www.pptfaq.com/FAQ01094_Office_2010_Click-to-Run.htm

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I don't have Office installed, but thanks for the suggestion! – Greg Bair Apr 17 '12 at 3:14

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