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Thread: Error number: 0x8007043C

  1. #1
    Peter Guest

    Error number: 0x8007043C

    when i go to search my udates...the window updates encount a problem....
    plz help~

  2. #2
    Rich Barry Guest
    Peter, The Great Google has a few possible answer

  3. #3
    mark32937 Guest

    RE: Error number: 0x8007043C

    I discovered I also had this problem within 1/2hr. of your post. I searched
    this forum back into April and found no other references to 0x8007043C. Maybe
    it is a new trojan just released today? Here is some more background on my
    experience, tell me if this sounds familiar: I formatted a new HDD and
    installed my old Windows XP disk ("SP0?"). I went to Windows Update to start
    the update process. 66 updates had to install (30 min on cable modem) before
    I would be able to install SP2. At the end of this first phase there was the
    black Windows XP screen and a message, "Please Wait". Keyboard and mouse were
    responsive but this remained unchanged for about an hour so I reset. Now when
    booting normally I get to the black WinXP screen and then all keyboard lights
    come on for 1/2sec. Then they all go black. Then the WinXP image disappears
    and the monitor blinks due to loss of signal. HDD light blinks furiously, it
    seems busy. I can reboot in safe mode w/networking but at Windows Update I
    get 0x8007043C after selecting Express or Custom.

    Do you have a file in your root C: directory called "pagefile.sys" that is
    several Gb in size? I do and I can't delete it, it's "in use by another
    person or program".

    Maybe a vulnerability in SP0 or SP1 has been comprimised, preventing us from
    updating to SP2? This sucx, like a chicken & egg thing. How do I get an
    updated (secure) OS if the only way is to expose myself on the www while
    updating with an insecure OS? I was hoping it was just a hardware problem but
    I didn't have the problem before connecting to the internet for a Windows

  4. #4
    KWW Guest

    Re: Error number: 0x8007043C

    One way you could solve the problem of how to update an insecure OS version
    when one has to connect to the internet is to slipstream SP1 then SP2
    updates. Do a search on this group for instructions. You would then end up
    with a CD that has an updated OS. I am not certain what to do about the
    other dribbling updates - doesn't the SP usually incorporate all updates up
    to the SP date (unless documented otherwise)?

  5. #5
    Clueless19 Guest
    Ive been trying all last nite and today to install sp2 it keeps giving me
    this error code and i cant find what it means anywhere else..can you help??

    I agree, I accessed my internet thru Win safe mode because I did not have any
    other choice. I cannot access my internet (DSL) and update; it works just
    fine in safe mode. I have Norton antivarius and just updated it. I need help
    badly?Anyone out there who can help? Thanks so much.

  6. #6
    BigWylie1 Guest

    RE: Error number: 0x8007043C

    It appears that the IS a new variant of a Sasser worm...
    I have been cleaning both the sasser and Baegle variants.

    The PC i am working on seems to be hijacked on the normal windows desktop.
    Progams appear to boot then dissapear.

    Only method to access the internet is to use SAFE MODE.
    when trying to run update, i get error codes as above?
    "Error number: 0x8007043C"

    is there any way to download the SP2 from an FTP?

  7. #7
    Guilherme Carnevale Guest

    Re: Error number: 0x8007043C

    Open a new command prompt and execute the following commands:

    regsvr32 wuapi.dll
    regsvr32 wuaueng.dll
    regsvr32 wuaueng1.dll
    regsvr32 wucltui.dll
    regsvr32 wups.dll
    regsvr32 wuweb.dll

    Guilherme Carnevale
    MVP Windows Shell/User

  8. #8
    Rusty Guest

    Error number: 0x8007043C

    Can someone help me to resolve this error??? This results from attempting to
    scan my PC for downloads, but the scan fails and MY PC WILL NOT WORK!!! I
    have to be in safe mode just to get to this site to post my problem.

  9. #9
    Hal Guest

    RE: Error number: 0x8007043C

    TaurArian, repeating your response that should be meant to help; though
    probably defines ostensibly what the error code means, but many of the people
    only have SAFEBOOT available for internet connections. I have the same
    problem, and I believe it's caused by a powerful worm, because update is only
    one thing inaccessible to me. I get errors that Admin policy prohibits
    downloading certain programs (oddly only things that would help me fix the
    problem); links in pages sometimes start to open once after trying longtime,
    then when clicked again, nothing happens. Since I can only control my
    computer in Safe Mode, but sometimes can squeak through the download of
    programs, what program/s should I try to obtain to try to fix this, please?

  10. #10
    Hal Guest

    RE: Error number: 0x8007043C

    TaurArian, I meant to say: your definition is no doubt right, but seems not
    to be helping a lot. Perhaps the Update error is really for most of us just
    another symptom of something sinister - like a worm or trojan, etc. BTW I'm
    running XP on Vaio Laptop.

  11. #11
    TaurArian Guest

    Re: Error number: 0x8007043C

    Hal, this is a Windows Update Newsgroup. Windows Update cannot be ran in safemode and
    nothing I say or do will change that.

    If safe mode is the only option available to a person, then obviously there is a problem
    which needs to be fixed before that person can run windows updates.

    If the problem is related to a virus or something then there are Newsgroups available to
    assist in that area -

    Security - Viruses OE client -
    orWeb client -
    If the safeboot option is only available and not due to a security problem then perhaps
    the XP General Newsgroup -

    Windows XP Newsgroups

  12. #12
    Join Date
    May 2008


    I have the same problem.
    I downloaded Service pack 3, which required the PC to restart after installation. On restart Windows did not start successfully and I got a black screen apologizing for the inconvenience and giving me the option to start in safe mode, or start normally or go back to the last setting that worked.

    Neither start normally nor go back worked, but I could start in safe mode with network.

    I tried to update Windows and got this error message 0x8007043C.

    I'm not technical so any step by step suggestions would be greatly appreciated...

  13. #13
    TaurArian Guest

    Re: Error number: 0x8007043C

    Translation: You need a service which is not available in safe mode.
    Windows Update will not run in safe mode.

    Please contact MS for assistance -

    Microsoft Windows XP Service Pack 3 (All Languages)

    Free unlimited installation and compatibility support is available for Windows XP, but
    only for Service Pack 3 (SP3). This support for SP3 is valid until April 14, 2009. For
    more information about this policy, visit the Windows XP Support Lifecycle page located at Chat and e-mail support is available only
    in the United States and Canada. For all other Windows XP issues, visit the Help and
    Support site at, and then choose
    your product.

    • US:

    • CA:

    • UK:

    • AU:

    • Other:
    select Windows XP | select Windows XP Service Pack 3

  14. #14
    shaun white Guest

    Re: Error number: 0x8007043C

    hi mate. im just unsure on one thing you wrote when you say execute do u mean
    delete the files below. im just a little unsure on what you mean by execute
    and before i type into the command promt i just want to make sure i
    understand what you mean. as it could also mean terminate the files from
    working basically im saying it just disables them from use. the firewall on
    sp2 has stopped my internet from responding in normal mode when i use "safe
    mode networking" the internet works fine. please could you help me with this
    problem and give me full details on how i can resolve this annoying problem

  15. #15
    Join Date
    Oct 2010

    Re: Error number: 0x8007043C

    That's funny ya'll are getting this error 0x8007043C on XP. I'm getting the error within Security essentials on Win7. Unlike the rest of you so far I can update normally, but security essentials will not let me open it in normal mode. I can open security essentials in safe mode but in trying to update the definitions, it is there I get that error and stating to make sure I am connected to the internet. And no amount of starting or stopping the service helps me. So if anyone knows what's going on with Security Essentials please let me know.

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