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A couple of days ago I changed my Windows 7 login password. My laptop is on my company's domain, so password changes are done over the internal network.

Since changing the password I noticed that all my saved Chrome passwords are missing. Also Skype, Windows Live, Internet Explorer and Outlook lost their saved passwords. I guess there could be more applications with lost passwords, but I have not opened them yet.

This makes me think that most applications saves their passwords to a general password vault on the Windows system and this vault got somehow corrupted when I changed my domain login password for windows.

Do anyone have any idea of how to fix this and prevent it from happening again?

EDIT : More Info

I do development work at the office, so most of the time I bypass the firewall and connect directly to the internet gateway. Now and then I would connect to the company wifi network to do printing and access files on a NAS. So by default my laptop does not connect to the wifi hotspot.

On this occasion to update the password, I had to connect to the wifi. So referring to the comment by OmnipotentEntity below, could this have happened when the system rebooted without a connection to the network as the laptop does not auto connect to the wifi hotspot?

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There is no password vault or keyring. However, it does sound like you lost your userprofile or roaming data. – iglvzx Jul 4 '12 at 7:20
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Here's another possibility. I'm not certain now to prevent or fix it with a domained computer. Your files were Encrypted by the filesystem, which uses a key which is itself encrypted by your password as stored in the SAM hive, if you change your password via a domain setting, the key's encryption might not have been updated. – OmnipotentEntity Jul 4 '12 at 7:22
    
Is there anything I can check or do to confirm this? – Rynardt Jul 4 '12 at 7:47

Had the same effect on a PC not a part of a domain. Just change your password to old value, the one before your last change. (Your domain may have a policy that prevents you from that. Either talk to your sysadmin to switch it off for you, or change password that many times that the controller "forgets" the very old value, then set it - not tested though).

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