Why is a SUBST'd drive inaccessible via shortcut or Run menu, but works fine from My Computer?

Posted by Kev on Super User See other posts from Super User or by Kev
Published on 2010-03-23T14:47:10Z Indexed on 2010/03/23 14:53 UTC
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windows-2003

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windows-explorer

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subst

I have shortcuts to C:, D:, and E: in my quick launch bar. C and E work fine when I click on them, but D does nothing (that I can see) when I click on it. D and E are both SUBST'd drives pointing to folders that happen to be network shares. (I do this rather than mapping them so it doesn't have to go through the network layer--that way it works faster and I still get recycle bin functionality, etc.)

If I go Start->Run and type D: or D:\, I get an error box saying This file does not have a program associated with it for performing this action. Create an association in the Folder Options control panel.

If I go to My Computer and double-click the D drive, it comes up fine. Also, if I type \\servername\sharename pointing to the same place, it comes up fine.

This just started happening this morning, out of the blue. It has been working fine ever since I set it up. Why might this be?

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