Windows Update error 1

If you receive Windows Update error 1 while installing a language pack, it is probably because your computer did not finish installing another update or your computer did not restart after installing another update. To fix this problem, follow the steps below.


  • Installing language packs affects large areas of the operating system and can take up to several hours, depending on the number of language packs that you have selected. We recommend installing only the language packs that you want to use, installing them when you are not using the computer for other activities, and closing any open programs before you begin.

To install language files

  1. Restart the computer.

  2. Open Windows Update by clicking the Start button Picture of the Start button, clicking All Programs, and then clicking Windows Update.

  3. In the left pane, click Check for updates, and then wait while Windows looks for the latest updates for your computer.

  4. Click View available updates.

  5. Select the language pack that you want to install, and then click Install. Administrator permission required If you are prompted for an administrator password or confirmation, type the password or provide confirmation.

After installing a language pack, we recommend that you install any additional updates that Windows found for your computer. To learn how, see Install Windows updates.

If you are using Windows Vista Ultimate, and are receiving this error when installing the Windows Vista language pack, see the knowledge base article titled Installation of Windows Vista language pack from Windows Update fails on the Microsoft Help and Support website. For more information about language packs in general, see Windows Vista Ultimate language pack release information on the Microsoft Help and Support website. You can also go to the Windows Update Solution Center website to request support by e‑mail.

Errors this applies to:

  • WindowsUpdate_1

  • WindowsUpdate_00000001

  • 0x00000001

  • 00000001