When you visit the Microsoft Windows Update Web site or the Microsoft Update Web site, the Web site may appear to stop responding. Additionally, you may receive the following error message:

0x800A0046

One of the following entries may be logged in the %windir%\Windowsupdate.log file:

Date Time 3096 c1c COMAPI WARNING: Unable to listen to self-update/shutdown event (hr=0X80070005)
Date Time 3096 c1c COMAPI WARNING: Unable to establish connection to the service. (hr=80070005)

CAUSE
This issue occurs if one or more of the following conditions are true:

• The DCOM configuration is incorrect.

• Your user account is a member of the Guests group.
• The security descriptor in the Automatic Updates service is incorrect.
• The local security policy is incorrect.

RESOLUTION
To resolve this issue, follow these steps on client computers…

[Continue reading Microsoft Knowledge Base article 910338]

[tags]windows update,error,microsoft update,0×800a0046[/tags]