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Windows update errors are very common windows problems. When you update a program, you may receive an error message about windows update. Error 0×80070490 is an error message that will appear on your PC when your windows updates failed. This error is caused by that the system is missing some important components for Windows update.
To fix the 0×80070490 problem, you need to repair your windows. Please follow below steps according to your windows OS:
If your PC is Windows XP:
Use the System File Checker to verify that the correct versions of the system files are present. To do this, follow these steps:
- 1. Click Start, and then click Run.
- 2. Copy and then paste (or type) the following command in the Open box, and then press ENTER:
cmd
- 3. At the command prompt, type sfc /scannow, and then press ENTER. Note If you are prompted for your Windows XP CD, insert the CD into the CD drive.
- 4. After the System File Checker has finished, try to install updates again.
If your PC is Windows 7, Windows Vista and Windows 8:
Performe a repair installation to restore the current Windows installation to the version of the installation DVD.
- 1. Close all the running applications .
- 2. Insert the Windows Vista, Windows Server 2008, Windows 7 or Windows Server 2008 R2 DVD in the computer’s DVD drive.
- 3. In the Setup window, click Install Now.
- 4. Click Go online to obtain the latest updates for installation (recommended).
- 5. Type the CD key if you are prompted to do this.
- 6. Select the operating system in “Install Windows” page you want to Upgrade or Inplace.
- 7. Click Yes to accept the Microsoft Software License Terms.
- 8. On the Which type of installation do you want? screen, click Upgrade.
If you find above instructions are too complicated, you can turn to aRegistry Cleaner for help. Registry Cleaner can also clean your system and optimize the performance. I suggest you use this tool, it also has a windows update function, which will automatically detect and install the windows update for you.
