V Google Help Centru za napako 3 piše tole:

Error 3 is a failure to communicate with Google Update. There are two known reasons for this:

1. You’re running Vista and you have configured Google Chrome to always run as administrator.

This is a known issue with the Google Chrome auto-updating mechanism and can be avoided by simply running Google Chrome as a normal user. Additionally, keep in mind that for security reasons we recommend that you don’t elevate the privilege of Google Chrome to administrator.
2. Google Update isn’t registered properly.

To fix this, verify that GoogleUpdate.exe exists in the location specified in the Windows Registry Editor.

The instructions below involve viewing your registry. If you’re uncomfortable or unfamiliar with this, you may want to consult your local computer guru before following these steps.
1. Go to the Start menu > Run.
2. Enter regedit.
3. Click OK. The Registry Editor should appear.
4. In the tree view on the left, navigate to the following directory:

HKEY_CLASSES_ROOT\CLSID\{2F0E2680-9FF5-43C0-B76E-114A56E93598}\LocalServer32
5. The ‘Default’ value should correspond to the location of your GoogleUpdate.exe file. Verify that GoogleUpdate.exe exists at the given path.
* If GoogleUpdate.exe doesn’t exist in this location, try uninstalling and reinstalling Google Chrome.
* If GoogleUpdate.exe exists at a different location, right-click the ‘Default’ value and select Modify. Enter the correct file path and make sure you use double-quotation marks, e.g. “C:\Documents and Settings\%USERNAME%\Local Settings\Application Data\Google\Update\GoogleUpdate.exe”

Opisuje dve zadevi. Kar se tiče opisa pod 2 dvomim…

Je pa še zanimivo, da posodabljanje in iskanje posodobitev normalno deluje v drugih 3 računih-uporabnikih sistema Windows Vista. Pozna kdo rešitev?