Cannot Install Microsoft Security Essential, error 0x80070645

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  1. Posts : 8,608
    Windows 7 Ultimate 32bit SP1
       #11

    Layback Bear said:
    My dear lady Jacee what happen to your Avatar?
    ??? what does it look like to you
      My Computer


  2. Posts : 25,847
    Windows 10 Pro. 64/ version 1709 Windows 7 Pro/64
       #12

    Send you a P.M.
      My Computer


  3. Posts : 25,847
    Windows 10 Pro. 64/ version 1709 Windows 7 Pro/64
       #13

    It's fixed.
      My Computer


  4. Posts : 48
    Windows 7 Home Premium 32bit
    Thread Starter
       #14

    Jacee said:
    Make sure it's totally uninstalled Uninstalling MSE - Microsoft Community
    tried it, still the same
      My Computer


  5. Posts : 25,847
    Windows 10 Pro. 64/ version 1709 Windows 7 Pro/64
       #15

    This is a option. Take a good read through this and see if it is what you want.
    Repair Install
      My Computer


  6. Posts : 7,781
    Win 7 32 Home Premium, Win 7 64 Pro, Win 8.1, Win 10
       #16

    You could try running an SFC & see if that finds any problems

    SFC /SCANNOW Command - System File Checker

    Also, here is a MS Fix it tool for uninstalling MSE. You might want to try that & see if MSE installs after running this.

    http://techdows.com/2010/11/microsof...-computer.html
      My Computer


  7. Posts : 25,847
    Windows 10 Pro. 64/ version 1709 Windows 7 Pro/64
       #17

    Okay top secret now would be a good time to make a list of what you have tried and what the out comes were. We are in the guessing stage until we have that information. You posted # 5 doesn't tell us what you tried.
    Yes, I did. I have searched Microsoft web site, tried many solutions but did not work.
      My Computer


  8. Posts : 8,608
    Windows 7 Ultimate 32bit SP1
       #18

    I'm going to ask for two logs .... CKScanner and Security Check.
    ***NOTE: Run both of these apps as 'Administrator' by right clicking and choose to run as Administrator from the dropdown menu.

    Download CKScanner by askey127 from HERE
    Important - Save it to your desktop.
    Doubleclick CKScanner.exe and click Search For Files.
    After a very short time, when the cursor hourglass disappears, click Save List To File.
    A message box will verify the file saved.
    Double-click the CKFiles.txt icon on your desktop and copy/paste the contents in your next reply.

    and

    Download Security Check by screen317 from here http://screen317.spywareinfoforum.org/SecurityCheck.exe or here http://screen317.spywareinfoforum.org/
    Save it to your Desktop.
    Double click SecurityCheck.exe and follow the onscreen instructions inside of the black box.
    A Notepad document should open automatically called checkup.txt.
    Please post the contents of that document.
      My Computer


  9. Posts : 1
    Windows 7 Pro 64 Bit
       #19

    Delete Key in Registry


    For Seven :
    Remove registry key :
    HKEY_CLASSES_ROOT > Installer > UpgradeCodes >26D13F39948E1D546B0106B5539504D9
    For Windows XP :
    HKEY_CLASSES_ROOT > Installer > UpgradeCodes > 1F69ACF0D1CF2B7418F292F0E05EC20B
    And Install it !
      My Computer


  10. Posts : 1
    Windows 7 64 Bit
       #20

    Security Essentials install !!SOLVED!!


    GuillaumeGabard said:
    For Seven :
    Remove registry key :
    HKEY_CLASSES_ROOT > Installer > UpgradeCodes >26D13F39948E1D546B0106B5539504D9
    For Windows XP :
    HKEY_CLASSES_ROOT > Installer > UpgradeCodes > 1F69ACF0D1CF2B7418F292F0E05EC20B
    And Install it !
    Cheers Gabard... although the Registry Keys were the other way around for me, I found the 26D13F..etc on the XP machine, deleting this allowed me to install so kudos.
      My Computer


 
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