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I have a Mac running Snow Leopard connected to an Active Directory domain. I can share folders on the Mac and view files from Windows without problems.

When I try to enable my Mac account for write access through System Preferences, I'm prompted for my account's password. Even though I'm entering the right one, I get an "Incorrect Password" response. The same process works fine for the local Mac administrator account; it's the Active Directory account I'm having problems with.

I followed the advice on this page on apple.com without success: (I used the Mac to reset my domain password, and re-created my login keychain)

If you want to use a user account that existed before you installed Mac OS X 10.3 (Panther), you may need to reset the password for the account using Accounts preferences.

Can anyone suggest what might be wrong? Until I fix this I can't write to my Mac file share from Windows.

Edit: Although I never resolved the problem on Snow Leopard, it's fine on Lion.

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I've attached the answer for prosperity. I got hit with this bug in Mavericks and it took forever to stumble upon the fix. Hopefully this helps someone in the future. –  user99736 Dec 1 '13 at 4:23

3 Answers 3

Possible fix here: http://discussions.apple.com/thread.jspa?threadID=1265858

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Thanks - looks like this is what I've done (reset my AD password and recreated my keychain). I wonder if the last guy's comment is relevant though - I can share my non-mobile account OK: "I suspect it has something to do with the fact that the account is a Mobile Active Directory account on OSX" –  Tim Robinson Dec 6 '09 at 10:35

See if you can get your domain admins to check the login logs for your username, it might shed some further light on the issue. Another question--any special characters in your password? WAG: could be a special character translation issue?

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Pardon me if I'm not getting this correctly, but the problem seems to be a blockage in the process of enabling write privileges on a folder. It appears that you have successfully turned on SMB sharing, and Windows users can connect, but whatever login account that you're using has read only privileges to the desired folder.

If that is the case, a relatively easy alternative might be to change the permissions on the desired folder with chmod in the Terminal using an ACL.

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