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Windows Update error 400 – How To Solve

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Summary:

400 with Windows Update on Windows 10, Windows XP, Windows Vista, Windows 7, Windows 8, Windows 8.1 along with Office 2013, Office 2010, Office 2007, Office 365, Office 2016 of editions like Standard, Professional, Professional Plus, Students and Teachers, Academic, Home and Business, Home and Student while removing, deleting, download, install, open, launch, sync, update, add accounts, printing, importing, exporting, updating, uninstalling. Error variations can be Virhekoodi 400, foutcode 400, Fejlkode 400, felkod 400, código de error 400, cod de eroare 400, feil kode 400, codice di errore 400, Fehlercode 400, code d’erreur.

Steps to fix 400 Windows Update Error Code

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Windows Updates deliver crucial updates for the services. Windows Updates helps keep the Windows with the latest patches for security along with newer versions of the Windows components, but also help keep the software, hardware, firmware etc in the computer up to date. If the Windows Updates are affected by any kind of errors, it will affect the whole Windows platform and cause Windows, Internet browsers and any applications installed in the computer to malfunction. .Net updates and new versions are too delivered using this Updates. Office 2013, Office 2010, Office 2007, Office 365, Office 2016 are also updated via Windows Updates.

To fix the Windows Update error code 400, follow the steps below

Check if the Windows Firewall is working fine

windows firewall updates

  1. Click on Start menu and then type “firewall” without quotes.
  2. Then, select “Windows Firewall”.
  3. Ensure that there are no red highlights, implying everything is green.

Clear Internet Explorer Settings

  1. Click on “Start” menu.
  2. Type “Internet Options” and hit “Enter” key.
    MS Internet Property Resolution for Outlook Support
  3. Then click on “Advanced” tab.
    MS Clean Manager For Office Error Resolve
  4. After that click on “Reset”.
  5. Now, check the option to “Reset personal settings“.
    microsoft Internet Advance Property For Windows Support and Resolutions
  6. Click on “Reset button”.

Clean Temp Files for System

  1. Click on “Start” menu.
  2. Type “run” after “Start” menu is pressed.
  3. “Run” dialog box window will pop up.
  4. Now, type the command “temp” and hit “Enter” key.

Microsoft Run Command Dialog For Temp

  1. Once the Temp folder pops up, press and hold “CTRL” key and ‘A’ together.
  2. Now, hold down “Shift“ key and press “Enter”.
  3. If you get options to click on “Yes” or “OK” “Continue”, check the box to apply the actions to all files and click on the respective button to continue the action.
    Microsoft Access Denied During MS Resolution
  4. If you are prompted again, check the box to repeat the actions and then click on “Skip” button.

Clean User related %temp% files

  1. Press and hold the “Windows” key and the letter ‘R’ together.
  2. Type the command “%temp%” and hit “Enter” key.
    Microsoft Run Command Dialog For User Temp
  3. Now, repeat the same steps as mentioned before to delete the Temp files for Windows.

Clean up unwanted System files

  1. Click on “Start” and then type the command “cleanmgr” without quotes.
    MS Clean Manager For Office Resolution
  2. Then click “Disk Cleanup”.
  3. Once the “Disk Cleanup” window opens, click the Windows drive.
  4. Now, wait till the scan completes, then select all the options except the “Recycle Bin” and “Previous Windows Installations”.
  5. Click on “OK” button now.
  6. Once the cleaning is complete, perform the steps from a. to d. and then select “Cleanup system files”.
  7. Then, check the options except the “Previous Windows Installations” and “Recycle Bin”.

Check if the issue is fixed.

In case, the Windows 400 is not fixed, it might be a critical issue leading to data loss. Click on the below icon to start chatting with an expert.

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December 13th, 2016

Posted In: Windows Updates error

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