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cdfs.sys is present but disabled in Windows 7 -- how can I change it to manual?

Anonymous
2015-07-24T23:15:39+00:00

I am unable to use CDFS CDs under Windows 7, apparently because cdfs.sys has been disabled.

cdfs.sys is where it should be, in c:\Windows\System32\drivers\

It's also in the Registry at HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\services\cdfs and the same except ControlSet002 and CurrentControlSet

However, according to System Information > Software Environment > System Drivers:

-- Started reports "No"

-- Start Mode reports "Disabled" and

-- State reports "Stopped"

cdfs.sys is not listed at all in Services, so I can't change the settings there.  Also, it is not listed at all in msconfig > services, so I can't change the settings there either.

How can I change these settings, or at least change "Disabled" to "Manual"?

Windows for home | Previous Windows versions | Windows update

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  1. Anonymous
    2015-08-03T18:46:24+00:00

    2 people found this answer helpful.
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  2. Anonymous
    2015-07-25T17:55:57+00:00

    Thank you, but I had already tried that before posting this question.  If you look at the replies to the answer you cite, you will see that I replied to it, stating "This answer is not helpful for me."

    Many people have posted similar questions, all along the lines of "cdfs.sys is disabled."  I have already tried many of the proposed solutions, with no luck so far.

    In general, I don't see the people who asked saying their problem was solved.  One who did say that said cdfs.sys was missing from his drivers directory and the CDs worked when he found a copy somewhere else and copied it to his drivers directory.  That is why I pointed out that it is in my drivers directory already.

    (Perhaps I did not make clear that the CD/DVD drive works fine for other CDs and DVDs.  The problem is only with CDs that use CDFS.)

    2 people found this answer helpful.
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  3. Anonymous
    2015-07-25T15:27:58+00:00

    Hello,

    Thank you for visiting Microsoft Community and providing us with the detailed description about the issue.

    As per the description, I understand that you are experiencing issue with cdfs.sys is disabled in the system and you need help to enable it manually in the system.

    I certainly understand your concern and will try my best to help you.

    I would suggest you to refer to the suggestions provided by “Vijay B” replied on July 22, 2012 in the following Microsoft Community link given below and check if that helps.

    http://answers.microsoft.com/en-us/windows/forum/windows\_7-performance/cdfs-sys-driver-disabled-in-windows-7-how-to/9bc0c934-23da-482f-97bf-54fca78d0ef2

    Note: This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:

    **How to back up and restore the registry in Windows**

    http://support.microsoft.com/kb/322756

    I hope this information is helpful.

    Please do let us know if you need any further assistance, we will be glad to assist you.

    Thank you.

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