Key Microsoft files with Invalid Digital Signatures

Discussion in 'Windows 8' started by adric, Aug 12, 2014.

  1. adric

    adric MDL Expert

    Jul 30, 2009
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    #1 adric, Aug 12, 2014
    Last edited by a moderator: Apr 20, 2017
    I just noticed on Win7 and Win8, that some key Microsoft files have invalid digital signatures.
    Code:
    hal     .dll
halacpi.dll (win7 only)
halmacpi.dll
ntfs    .sys
ntoskrnl.exe
    InvalidSig.png

    Anyone know why this is and what the cause might be?
     
  2. Tito

    Tito Super Mod / Adviser
    Staff Member

    Nov 30, 2009
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    #2 Tito, Aug 12, 2014
    Have you checked them from XP?? All files are properly signed here.

    :g:
     
  3. Enigma256

    Enigma256 MDL Senior Member

    Jan 17, 2011
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    #3 Enigma256, Aug 12, 2014
    Probably because you are checking the file from XP, which does have have the certificates against which these files are validated. For system files whose trust chain is rooted in an OS-provided certificate, you must validate the signature using the OS for which the file was designed.