How to Fix Update Error 0x8024a21e in Windows 10

Keeping Windows 10 OS up-to-date is really a challenging thing to do these days. This is because every now and then, users receive new kinds of bugs and errors on their computers. The 0x8024a21e error is one such issue that may arise on account of bad system components or the update services not set to occur automatically.

Whatever is your case, follow our stepwise solutions in order to get rid of this persisting error. At times, a simple rebooting of the device addresses several problems or issues on the computer. So, better restart Windows 10 first and if this trouble appears again, read the below workarounds in detail –

Windows 10 Update Error 0x8024a21e Solutions 

To solve the update error code 0x8024a21e on Windows 10 PC, try the following workarounds sequentially –

1] Reset Windows Update Components

Windows 10 users mostly encounter the update error 0x8024a21e on account of bad system components. The cache folders like SoftwareDistribution and Catroot2 become corrupted after a certain interval of time and thus results in new bugs and errors. To resolve the newly generated issues, you must clear these folders from time to time. Here’s how to perform this task –

net stop wuauserv
net stop cryptSvc
net stop bits
net stop msiserver

  • Now that you have stopped the required services, rename the cache folders by adding the .old extension at the last of their names.

ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
ren C:\Windows\System32\catroot2 Catroot2.old

  • After renaming both softwaredistribution and catroot2 folders, restart those services that have been stopped recently. To do so, run the following commands –

net start wuauserv
net start cryptSvc
net start bits
net start msiserver

  • Lastly, type exit and press Enter to come out of the prompt area. 

Sign back into your device and check if the error 0x8024a21e gets resolved or still exists. 

2] Set Windows update services to start automatically

If the Windows update services are not set to start automatically, this may result in the 0x8024a21e bug. Here’s how to reset update services to perform automatically –

  • Press Win + S to open the Search window, type cmd in the text field.
  • Right-click on the top result and select Run as Administrator on the context menu. 
  • When the Windows Console opens up, execute the following codes one after another. 

SC config bits start= auto

SC config cryptsvc start= auto

SC config trustedinstaller start= auto

SC config wuauserv start= auto

  • After successfully running the above commands, restart your PC

From the next logon, check whether you are now able to download and install updates or not. If not, you may try the next set of solutions below. 

3] Start the BITS service

Just like Windows update, Background Intelligent Transfer Service (BITS) is also an essential service to get timely updates on your computer. If the same gets disabled somehow, your PC can’t get recent patches automatically. Here’s how to re-enable BITS on your device –

  • Use WinKey + R to launch the Run dialog.
  • Type services.msc in the text field and press Enter.
  • When the services window comes into view, scroll down to Background Intelligent Transfer service.
  • Once found, right-click on it and choose the Properties option. 

Fix Update Error 0x8024a21e - BITS Properties

  • Use the drop-down menu next to Startup type and select “Automatic“.

Fix Update Error 0x8024a21e - Start BITS

  • Click the Start button to activate this service on your computer.
  • Lastly, hit Apply then OK. 
  • Now, reach out to the below path and click Check for Updates

Settings (Win + I) > Update & Security > Windows Update

The Windows update process should work as before. If not, you may try to manually install the pending updates. 

4] Manually Install Cumulative Updates

If the 0x8024a21e error persists even after configuring the update services, you may manually download and install the pending cumulative updates. To do so, follow these easy steps –

  • Go to the location – Settings > Update & Security > Windows Update.
  • On the right pane, click View update history.
  • Note down the cumulative update number that displays “Failed to install“.
  • Visit the Update Catalog site, type the noted down KB number in the search field, and hit Enter

Fix Update Error 0x8024a21e - Update Catalog

  • Doing so will display a list of well-matching standalone packages. 
  • Pick the one that suits your system architecture and hit the Download button.
  • Subsequently, click the top link to start downloading the updates as .msu file format. 
  • When the download completes, open the folder containing this file, and double click the setup file.

I hope this completes without generating error code 0x8024a21e again. If not, you may try the next set of solutions.

5] Run Windows Update Troubleshooter 

If none of the above solutions address the 0x8024a21e issue, you may take the help of an internal tool i.e. Windows update troubleshooter. Running this tool will look for any bugs or errors that are preventing the update process to occur automatically and fix them. Here’s how to troubleshoot Windows Update –

  • Use Windows key and I to launch the Settings app.
  • Select Update & Security followed by Troubleshoot on the upcoming screen.
  • Jump to the right side and click the Additional troubleshooter link.
  • Tap once over the Windows Update and hit Run the troubleshooter

Run the Windows Update Troubleshooter - Update error 0x8024a000

  • Doing so will initiate a scan on your computer. 

If any problem were discovered during the scanning process, this will present a resolution to fix them as well. After applying the resolution it provided, Restart your PC

In case the troubleshooter doesn’t report any issue, use either previously created system restore points or clean install Windows 10 on your device. 


  1. Thanks for these detailed directions. I managed to get through step #1 after changing these statements in your code:
    – Under “Stop the basic update services…,” net start wuauserv should be net stop wuauserv
    – Under “Now that you have stopped the required services…,” C:WindowsSoftwareDistribution should be C:\Windows\SoftwareDistribution and C:WindowsSystem32catroot2 should be C:\Windows\System32\catroot2
    – Under “After renaming both softwaredistribution and catroot2 folders…,” net start wauserv should be net start wuauserv.

    I’m still waiting for Windows to finish checking for updates to see if this solved the problem.

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