Error code 80040154 appears when using Windows Update

Asked By 10 points N/A Posted on -


The error code 80040154 appears when I am using Windows Update.

I also receive “Class Not Registered” message. An error happens while checking for new updates for my computer.

And windows could not search for new updates.

What needs to be done to fix this problem?

I need a hand. Thanks a lot.

Windows could not search for new updates
An error occurred while checking for new updates for your computer.
Error(s) found:
Code 80040154 Windows Update encountered an unknown error.
Get help with this error

Most recent check for updates 4/17/2010 at 1:43 PM
Updates were installed 4/17/2010 at 2:17 PM
View update history
You received update For Windows and other products from Microsoft Update
Find out more about from Microsoft Update. Click here for details.

Best Answer by melissamay
Best Answer
Best Answer
Answered By 0 points N/A #91298

Error code 80040154 appears when using Windows Update


Error code 80040154. Class not registered.

To fix this:

The error means there is a problem with the permissions on the registry. The simplest way to fix this is to install the software as the administrator, but you need to modify the permissions on the registry key.

1. Click Start> Run> type regedit and press enter.

2. Navigate to: HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlPrintEnvironmentsWindows NT hive.

3. Look for the Windows NT hive on the left pane and choose Permissions.

4. Remember that the system account is in Full Control. You can do this by clicking on the System User on the top and then tick the Full Control check box.

5. Click OK to save the settings and close the regedit window.

6. Reboot your computer before attempting to install again.

Answered By 590495 points N/A #91299

Error code 80040154 appears when using Windows Update


Since your computer was unable to check new updates for Windows, you may want to check if you have a good internet connection. Open your web browser and then try browsing some websites and see if your internet connection is stable enough. If the connection seems pretty much stable, try again the Windows Update. If it still does not work, try checking your computer for any possible errors. Use a disk utility tool to check the system. For a much thorough diagnostics on the system, use a disk utility tool like PC Tools Performance Toolkit or Norton Utilities.

You can also try checking your system using System File Checker. Click Start, Run then type sfc /verifyonly then hit Enter. This command will check the integrity of all protected system files. If the scan reported an error, open WINDOWSlogscbscbs.logsfcdetails.txt to see the error details. After checking the details, try attempting a repair by clicking Start, Run then type sfc /scanfile=<path and file name>. For example, sfc /scanfile=C:WINDOWSsystem32iasias.mdb.

Answered By 60 points N/A #91300

Error code 80040154 appears when using Windows Update


Hi Kate Harry 

The error is usually encountered in the absence of apt permissions in the registry. Ensure that you are performing the windows update after being logged in as an administrator. Also check out this Techyv post to get more idea regarding on this issue. 

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