In my computer, I'm used to have a drive created with the SUBST command to map to a local folder deeply nested in my directory structure. I map it on each login for my user only by placing a bat file with the command in the startup menu. Problem is that when I need to elevate a program on that "drive" (or a program that uses it), it simply doesn't sees it. After the user/password of UAC, the program works normally, but only shows the C and D drives. I'm currently using a standard account and UAC ask me for credentials of an admin user. I've already tried the workaround proposed here: http://support.microsoft.com/kb/937624/en-us, but with no luck. Any ideas of a workaround for this annoying bug?

Hi, Based on my research, Im afraid that the only workaround is to run the batch file twice, once for normal privilege and the other for administrative privilege. You can also refer to the similar thread: Problem with 'subst'. Bug or Feature? Hope this helps. Jeremy Wu TechNet Community Support

Hi, Would you mind to provide me the detailed steps about how to reproduce the issue? I cannot reproduce the issue on my test machine. Thanks, Spencer Please remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Hello Spencer Here are what I've done to reach at the error: 1) Create 2 accounts in the system, one belonging to the "administrators" group and other that doesn't (and is member of "users" only). 2) UAC is set to the highest level in control panel. 3) Login with the non-admin account. 4) Create a substed drive from a local folder. For example: SUBST g: c:\windows (any path will do here really) 5) I try to "Run as administrator" any executable file located in the substed drive (given my previous step, I might attempt to run notepad.exe elevated for instance). 6) UAC shows it's OTS dialog asking for a user/password with administrators group membership. I provide the credentials for the admin user previously created. 7) Here's the bug: instead of the program appearing and running normally, an error message (generated from Windows itself) says that the executable I just right clicked does not exists. 8) A variation: if instead of running an exe in the substed drive I run an exe in C: directly, it elevates correctly, but instead it hasn't the substed drive at all, for example it does not appears in the open/save common dialogs (while if I run non-elevated, it does appear in such dialogs). I would greatly appreciate any help! Thanks.

Thanks Alejandro, I am doing test for the issue. Will reply you as soon as possible. :) Thanks, SpencerPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Hi Alejandro, Any update? Thanks, SpencerPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Hi Alejandro, that's OK. :) BR, SpencerPlease remember to click Mark as Answer on the post that helps you, and to click Unmark as Answer if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.