Some users are getting the “0xca00a000” error code when trying to install a Windows update via the Windows Update screen. The issue is mostly encountered on Windows 10 and the update that is mostly reported to fail with this error message is “KB4056892“.
What is causing the 0xca00a000 error?
We investigated this particular error message by looking at various user reports. When analyzing the symptoms, we also kept track of the repair strategies that all of these affected users deployed to resolve the issue. Based on our findings, there several common scenarios in which the 0xca00a000 error occurs:
- The update triggering the error is already installed – As it turns out, it’s quite likely that the error is actually a false positive. This error might get thrown even when the update installs successfully. This is typically evidence of a bad update and the behavior will be fixed with a cumulative update.
- The Windows Module Installer service is disabled – This particular error can also occur in those instances where the user tries to install a pending Windows Update while the Windows Module Installer service is disabled. In this case, the issue can be resolved by taking a trip to the Services screen and re-enabling the service.
- The Windows update was not downloaded properly – There are confirmed instances where this issue is occurring because the user is installing an incomplete update. In this case, two potential solutions are either to install the update manually or to clear the contents of the Software distribution folder.
If you’re struggling to resolve this particular error code, this article will provide you with a collection of verified troubleshooting steps. Down below, you’ll find several repair strategies that might be applicable to your current scenario.
A lot of other users finding themselves in a similar situation have used one of the potential fixes below to get the issue resolved. For the best results, follow the methods in the order that they are presented. You should eventually discover a fix that is effective in your particular scenario.
Method 1: Verifying if the update has already installed
Before you go ahead and try various fixes that will resolve the 0xca00a000 error code and allow you to install the Windows update, it’s important to make the verifications to ensure that you’re not dealing with a false positive.
The 0xca00a000 error has been linked with a lot of false positives in which the error gets thrown even if the update is installed successfully. There are multiple buggy Windows updates that are known to cause this issue, but the most popular one is KB4056892.
To ensure that you’re not dealing with a false positive, follow the method below to make the necessary investigations:
- Press Windows key + R to open up a Run dialog box. Then, type “appwiz.cpl” and press Enter to open up the Programs and Features screen.
- Inside the Programs and Features window, click on View installed updates from the right-hand side menu to see a brief history with all the installed updates.
- Once you get to the Installed Updates screen, look through the list of installed updates and see if you can find the update that is failing with the 0xca00a000 error code listed here. If you see the update listed, you are dealing with a false positive.
If you discovered that the update was installed successfully, leave it installed and wait for the next cumulative update. We have seen this happen with a number of updates in the past. Typically, Microsoft will include a hotfix in a cumulative update that removes the error for good.
If you didn’t find the update that is failing with the 0xca00a000 listed inside the Installed Update screen, move down to the next method below.
Method 2: Running the Windows Update troubleshooter
If the first method proved it to you that you’re not dealing with a false positive, you’ll need to begin taking the appropriate steps to identify the source of the problem. But before you attempt to do so manually, let’s see if Windows is not capable of repairing the error code automatically.
Several affected users have reported that the issue was automatically resolved after they ran the Windows Update Troubleshooter. This utility is supposed to scan and apply various repair strategies programmed to resolve the most common error codes related to Windows Update.
Here’s a quick guide on running the Windows Update Troubleshooter:
- Press Windows key +R to open up a Run dialog box. Then, type “ms-settings:troubleshoot” and press Enter to open up the Troubleshoot tab of the Settings app.
- Inside the Troubleshoot tab, go to the Get up and running section, select on Windows Update, then click on Run the troubleshooter.
- Wait to see if the initial scan reveals any problems with the Windows Update component.
- If an issue is identified, click on Apply this fix and follow the on-screen instructions to apply the repair recommendations.
- Once the suggested fix has been applied, restart your computer and see if the error code is removed at the next startup.
If you’re still encountering this error message, move down to the next method below.
Method 3: Setting the Windows Module Installer service to Automatic
Another common reason that is confirmed to trigger the 0xca00a000 is when a user tries to install a pending Windows update but the service needed to complete the operation (Windows Module Installer) is disabled.
Several users finding themselves in a similar situation have reported that the issue was resolved permanently after they started the Windows Module Installer from the services screen and set the startup type of the service to Automatic.
There are two ways with which you can ensure that the Windows Module Installer is started and the startup type set to Automatic. Follow whichever method seems more convenable to your current situation:
Via Command Prompt
The quickest and most efficient way of doing this is to run a simple command in an elevated Command Prompt. Here’s a quick guide:
- Press Windows key + R to open up a Run dialog box. Then, type “cmd” and press Ctrl + Shift + Enter to open up an elevated Command Prompt. When prompted by the UAC (User Account Control), click Yes to grant administrative privileges.
- Inside the Elevated Command prompt, run the following command to start the Windows Module Installer service and set its Startup type to Automatic:
SC config trustedinstaller start=auto
- If the command is successful, you should see a success message similar to the screenshot below:
- Close the elevated Command prompt and attempt to reinstall the update to see if the error code has been resolved.
Via the Services utility
If you’re not comfortable with doing things by running commands from the terminal, you can also recreate the procedure above using the Windows GUI. But keep in mind that the procedure is a little longer. Here’s what you need to do:
- Press Windows key + R to open up a Run dialog box. Then, type “services.msc” and press Enter to open up the Services screen.
- Inside the Services screen, scroll down through the list of services and locate Windows Modules Installer. Once, you see it, double-click on it.
- Inside the Windows Module Installer Properties screen, go to the General tab and set the Startup type to Automatic, then hit Apply to enforce the changes. If the service is not started, also click on the Start button (under Service status) before closing the Services screen.
- Attempt to reinstall the update and see if the error code has been resolved.
If you’re still encountering the 0xca00a000 error, move down to the next method below.
Method 4: Installing the update manually
If all the methods above have not been helpful and you’re running out of time, you can probably circumvent the issue by installing the update that is failing manually. This can be done by using Microsoft’s Update Catalog website.
Several users encountering the same error message have reported that for them, the error code was no longer thrown when they tried the manual installation.
Here’s a quick guide on installing the failing update manually to circumvent the 0xca00a000 error:
- Visit the Microsoft Update catalog website from this link (here).
- Use the search function in the top-right corner to find the update that you wish to install. In our example, I’m trying to install is KB4056892.
- Consult the results page and click on the appropriate update depending on your CPU architecture and bit version.
- Once you decided on the correct update version, click the Download button associated with it to initiate the download.
- Once the download is complete, open the installation executable and follow the on-screen instructions to install the update manually.
- If you are able to install it without being prompted by the 0xca00a000 error code, restart your computer and see if the issue has been resolved at the next startup.
If you’re still prevented from installing the update, move down to the final method below
Method 5: Clearing the contents of the Software Distribution folder
Some users encountering the 0xca00a000 error code have reported that the issue was finally resolved after they cleared the Software Distribution folder. This will force your operating system to re-download the updates that are waiting to be installed.
As you can imagine, this procedure will resolve those instances where the error code occurs because of an incomplete Windows Update or some type of corruption inside the Software distribution folder.
Here’s a quick guide on clearing the Software Distribution folder:
- In order to delete the contents of the Software distribution folder, we’ll need to disable some services first (Windows Update service and Background Intelligent Transfer Service). To do this, press Windows key + R to open up a Run dialog box. Then, type “cmd” and press Ctrl + Shift + Enter to open up an Admin Command Prompt.
Note: If prompted by the UAC (User Account Control), choose Yes to grant administrative privileges.
- In the elevated Command Prompt, type the following commands and press Enter after each one to stop the two services:
net stop wuauserv net stop bits
- Once the two processes have been stopped, minimize the elevated Command prompt and open File Explorer. Using File Explorer, navigate to the following location:
- Once you get there, select all contents from the SoftwareDistribution folder, right-click and choose Delete. Click Yes if prompted by the UAC (User Account Control).
- Once the contents have been cleared, return to the elevated Command Prompt, type the following commands and press Enter after each one to re-enable the services that we previously stopped:
net start wuauserv net start bits
- Restart your computer to let Windows refresh the folder and see if the issue is now resolved.