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How to fix c1900104

Alton Alexander
By Alton AlexanderUpdated on June 4th, 2022

The c1900104 error code is a Windows Update error. This error code means that the Windows Update service is not running. The Windows Update service is responsible for checking for and installing updates for Windows. If the Windows Update service is not running, Windows will not be able to install updates. This can lead to stability and security problems on your PC. There are a few things you can try to fix this error. First, you can try restarting your PC. If that doesn't work, you can try running the Windows Update Troubleshooter. If neither of those things work, you may need to reset the Windows Update service.

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1. Restart your computer and try again

  1. Close any open programs.
  2. Click on the "Start" button.
  3. Type "regedit" in the search box and press "Enter."
  4. Navigate to the following registry key: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SafeBoot
  5. Delete the "DisableAutoReboot" DWORD value.
  6. Restart your computer.

2. Check for updates to Windows and try again

  1. Click Windows Update.
  2. Click Check for updates.
  3. If there are updates, click Install updates.
  4. If there are updates, follow the instructions to install them.
  5. If there are still updates, repeat steps 2-5.

3. Run the System File Checker tool and then try again

  1. Open an elevated command prompt.
  2. Type the following command and press Enter: systemfilechecker.exe
  3. If the tool reports any errors, continue to step 5.
  4. If the tool reports no errors, type the following command and press Enter: repair-windows-10.ps1
  5. If the tool reports any errors, continue to step 7.
  6. Type the following command and press Enter: repair-windows-10.ps1 -force
  7. If the tool reports any errors, continue to step 9.
  8. Type the following command and press Enter: net stop wuauserv
  9. Type the following command and press Enter: net start wuauserv
  10. Type the following command and press Enter: reboot

4. Try to repair your computer's boot configuration data

  1. Boot your computer into safe mode.
  2. From the Windows Start menu, select "Devices and Printers".
  3. Right-click on your hard drive and select "Properties".
  4. In the "Boot" tab, select "UEFI" from the drop-down list.
  5. Click on the "Configure" button.
  6. Under "Boot Configuration Data", select "Repair Option 1".
  7. Click on the "Next" button.
  8. Under "Options for Repairing Boot Configuration Data", select "Scan for and Repair Corrupted Files".
  9. Click on the "Next" button.
  10. Click on the "Finish" button.
  11. Reboot your computer.

5. Try to use the Startup Repair tool

  1. Boot your computer into Safe Mode by pressing F8 while your computer is starting.
  2. Click "Advanced Boot Options" and select "Startup Repair."
  3. Click "Startup Repair."
  4. Click "Troubleshoot" and then "Advanced Options."
  5. Click "Startup Repair" again.
  6. Click "Apply Repair."
  7. If the computer starts up successfully after the repair, you can remove the "Safe Mode" boot option by restarting your computer.

If you didn't find success with an option above, then try:

  1. Try to use the Bootrec.exe tool.
  2. Try to use the Diskpart tool.
  3. Try to use the Bcdboot tool.
  4. Try to use the Sfc /scannow command.
  5. Try to use the Chkdsk tool.