Windows 10: Windows Update, error 0x800700c1 and 0x80070643

Discus and support Windows Update, error 0x800700c1 and 0x80070643 in Windows 10 Installation and Upgrade to solve the problem; I have a strange problem, Windows Update has two pending updates, KB4462919 (cumulative update) and KB2267602 (Windows Defender definition update) but... Discussion in 'Windows 10 Installation and Upgrade' started by Cricco95, Oct 26, 2018.

  1. Cricco95 Win User

    Windows Update, error 0x800700c1 and 0x80070643


    I have a strange problem, Windows Update has two pending updates, KB4462919 (cumulative update) and KB2267602 (Windows Defender definition update) but it can't install them. On the first update I receive 0x800700c1 error while with the second one 0x80070643.

    Also Windows Defender says that "Threat service has stopped" and I didn't manage to bring it up and when I try to update Windows manually with Media Creation Tool the PC reboots, rollbacks to the previous version and says that "The installation failed in the SAFE_OS phase error during Replicate_OC operation".

    Details

    O.S. version: Windows 10 1803 (build SO 17134.228)

    :)
     
    Cricco95, Oct 26, 2018
    #1
  2. 68One Win User

    Error 0x800700c1 in windows 10

    I have got the error 0x800700C1 and could not update KB3115259, KB3167685, KB3163018 & KB3149135 since a week ago. I tried both you two methods but the result was the same. I don't wish to follow hbja to go back to "Factory Setting". Can you help me sort
    it out with other solutions?
     
    68One, Oct 26, 2018
    #2
  3. error 0x80070643 (update)

    Hey

    Try to apply the update manually Windows Update, error 0x800700c1 and 0x80070643 ;) As suggested by Microsoft. I just wrote a
    step by step guide.


    However be sure that the update itself is downloaded and that the installation part is failing, and not the downloading part.

    Hope it helps you Windows Update, error 0x800700c1 and 0x80070643 :)
     
    Yuri Pustjens, Oct 26, 2018
    #3
  4. Windows Update, error 0x800700c1 and 0x80070643

    Error 0x800700c1 in windows 10

    Hi,

    Thank you for posting your query on Microsoft Community.

    Share this information to assist you better.

    • Which build is currently installed in your computer?
    • Do you have any anti-virus program installed?
    The error code 0x800700C1 occurs because the Windows Authenticode Signature Verification function now verifies portable executable (PE) files.

    I suggest you to follow the methods below and check if you can install the updates:

    Method 1: Run Windows Update Troubleshooter

    I suggest you to run the Windows Update Troubleshooter. Follow these steps to run Windows Update
    troubleshooter:

    • Press Windows key + W and type
      troubleshooting.
    • Select Troubleshooting.
    • Select View all on the top left corner.
    • Click Windows Update troubleshooter.
    • Follow the on-screen instructions to run the troubleshooter.
    • Check if issue persists.
    If the issue persists, follow next method.

    Method 2:

    I suggest you to check if the services responsible for Windows update is running. Refer to these steps:

    • Press Windows key +R, type “services.msc
    • Locate the BITS, Cryptographic, MSI Installer
      and the Windows Update Services and check if it is running.
    • If not, right click on the service and click start to start the service.

    Hope this helps, let us know the status of the issue. We will assist you further.
     
    Rakesh Narayanaswamy, Oct 26, 2018
    #4
Thema:

Windows Update, error 0x800700c1 and 0x80070643

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