How to fix Windows update error 0x8024a203?

Error 0x8024a203 means Windows Update gave up on an update, most often a Windows 11 upgrade or a large cumulative update. Microsoft does not document this exact code, so the name of the failed update decides the fix. Restart the PC and select Retry first; it often works on the second try.

Facts checked on 15 October 2026. Steps written for Windows 11 (25H2 and 26H2) and Windows 10 22H2.

What Windows Update error 0x8024a203 means

Codes that start with 0x8024 come from the Windows Update Agent, the part of Windows that finds, downloads and hands updates over to be installed. Microsoft's error list groups them by component. The 0x8024A range is headed Automatic Update Errors, with codes such as 0x8024A000 (WU_E_AU_NOSERVICE, "Automatic Updates was unable to service incoming requests") and 0x8024AFFF (WU_E_AU_UNEXPECTED, "An Automatic Updates error not covered by another WU_E_AU* code").

0x8024A203 is not on that list. We could not find a Microsoft page that names it. What we know comes from where people meet it. It shows up when a Windows 10 PC tries to move to Windows 11 and when a cumulative update downloads and then fails. In 2017 it also stopped a Windows 10 Mobile phone that ran out of storage. So treat it as a general "the update could not finish" signal and read the name of the failed update.

Why Windows update error 0x8024a203 appears

Because Microsoft does not document the code, the order below comes from the cases where it shows up, not from a Microsoft statement. Each cause has its own fix, so you do not need to run all of them.

How to fix Windows update error 0x8024a203

Fix 1 to Fix 4 are tied to what failed and solve the error for most readers. Fix 5 to Fix 7 repair Windows Update itself and are for the case where every update fails. Fix 8 reinstalls Windows over itself and keeps your apps and files.

Fix 1. Restart the PC and select Retry

5 to 20 minutesNo riskThe update failed once or twice, or you do not know yet which update it is.

The code only says that Windows Update could not finish. A pending restart from an earlier update or an interrupted download stops it once and not again. In a Windows 11 upgrade report on Microsoft Q&A, simply running the upgrade again worked.

1. Open Settings > Windows Update > Update history (Windows 10: Settings > Update & Security > Windows Update > View update history).
2. Note the name of the failed item: Windows 11, a version such as Windows 11, version 25H2, or a KB number under Quality updates.
3. Save your work and select Start > Power > Restart. Use Restart, not Shut down.
4. Plug a laptop in and set it not to sleep while the update runs.
5. Open Settings > Windows Update and select Retry or Check for updates.
6. Leave the PC alone until it asks to restart, then restart it.

Fix 2. Free up space on drive C:

10 to 20 minutesLow riskDrive C: is almost full, or the update downloads completely and then fails.

An update needs room to unpack and install on top of its download. The one case of 0x8024a203 with a clear cause, on Microsoft Q&A, was an update that downloaded fully and then failed because the device lacked storage. Windows does not say how much it needs.

1. Open Storage settings. Select Start > Settings > System > Storage. The top of the page shows how full the drive is and what uses the space.
2. Open Cleanup recommendations. Under Storage management, select Cleanup recommendations.
3. Clean up what Windows suggests. Open each group (Temporary files, Large or unused files, Files synced to the cloud, Unused apps), check the items you do not need and select Clean up in that group.
4. Delete more temporary files. Go back to Storage and select Temporary files. Windows lists the types it can remove with their size. Check the ones you do not need and remove them. Leave Downloads unchecked unless you have checked that folder.

These steps were written for Windows 11 (screenshots: 26H2). The full page with the other versions and what each result means: Free up disk space and delete temporary files

Fix 3. Run the Windows 11 upgrade from the Installation Assistant or the ISO

1 to 2 hoursLow riskThe failed item is the Windows 11 upgrade from Windows 10, or a new Windows 11 version such as 25H2.

The Installation Assistant and setup.exe from the ISO do the upgrade without the Windows Update download that fails with 0x8024a203. They also run the requirements check fresh, so a real block shows up with a documented code instead of this one. This is the route a Microsoft volunteer moderator gave on Microsoft Q&A.

1. On Windows 10, open PC Health Check and select Check now. If the PC does not meet the requirements, read our guide to error 0xC1900200 first.
2. Open Microsoft's Download Windows 11 page.
3. Under Windows 11 Installation Assistant, select Download Now and run the file. Or download the ISO further down the page.
4. For the ISO: right-click it, select Mount and double-click setup.exe on the new drive.
5. Choose to keep personal files and apps, and let Setup run. Keep a laptop plugged in.
6. If Setup stops, note the code it shows. A different code names the real problem.

Fix 4. Install the failed update by hand from the Microsoft Update Catalog

15 to 30 minutesLow riskA cumulative or security update with a KB number fails at every retry.

The Catalog file is a complete, fresh copy of the update, so a broken Windows Update download is out of the way. If it fails too, the standalone installer shows its own error code, which is easier to look up than 0x8024a203.

1. Check the processor type. Open Settings > System > About and look at System type: an x64-based PC needs the x64 file, an ARM-based PC (for example Snapdragon) needs the arm64 file.
2. Search the catalog. Open the Microsoft Update Catalog at catalog.update.microsoft.com in your browser, type the KB number (for example KB5124010) in the search box and press Enter.
3. Pick the right row. Find the row whose title names your Windows version and your processor type (x64-based or arm64-based) and select Download on that row.
4. Download every file listed. A window lists one or more .msu links. Download all of them into one empty folder, for example C:\packages. On Windows 11 24H2 and later the list can include earlier checkpoint updates that the new one needs.
5. Install a single file. If there is only one file, double-click it and confirm the installation in the Windows Update Standalone Installer.
6. Install several files with DISM. If there are several files, open an elevated Terminal or Command Prompt and run DISM with the newest file. DISM finds the other files in the same folder and installs them in the right order.

   DISM /Online /Add-Package /PackagePath:C:\packages\<newest-file>.msu

7. Restart. Restart the PC when the installation finishes, then run winver again: the OS build should have changed.

These steps were written for Windows 11 24H2 and later; Windows 10 22H2. The full page with the other versions and what each result means: Install an update from the Microsoft Update Catalog

Fix 5. Reset the Windows Update components

10 minutesLow riskThe same update keeps failing after Fix 1 to Fix 4, or every update fails.

Windows Update reuses what is in its SoftwareDistribution and catroot2 folders at every retry. If that cache is broken, the update fails the same way each time. Renaming the folders and restarting the update services makes Windows start again from zero.

1. Open Command Prompt as administrator. Type cmd in the search box, right-click Command Prompt and select Run as administrator. Select Yes when Windows asks for permission.
2. Stop the update services. Type the commands below and press Enter after each one. If Windows says that other services depend on Cryptographic Services, it stops them too. A message that a service is not started is fine.

   net stop wuauserv
   net stop bits
   net stop cryptsvc

3. Delete the download queue files. This clears the list of downloads that the Background Intelligent Transfer Service keeps. If Windows says it cannot find the files, continue.

   del "%ALLUSERSPROFILE%\Application Data\Microsoft\Network\Downloader\qmgr*.dat"

4. Rename the update cache folders. Renaming keeps a copy in case you need it; Windows creates new, empty folders when the services start again. If you get Access is denied, a service is still running: repeat the previous step.

   ren %systemroot%\SoftwareDistribution SoftwareDistribution.old
   ren %systemroot%\System32\catroot2 catroot2.old

5. Start the services again. Type the commands below and press Enter after each one. The requested service has already been started is fine: Windows started it on its own.

   net start cryptsvc
   net start bits
   net start wuauserv

6. Restart and check for updates. Restart the PC. Then select Start > Settings > Windows Update > Check for updates. The first check can take longer than usual because everything is downloaded again.

These steps were written for Windows 11 and Windows 10 (the steps are the same). The full page with the other versions and what each result means: Reset Windows Update components

Fix 6. Repair Windows files with DISM and SFC

15 to 40 minutesNo riskEvery update fails, or the installer in Fix 4 showed a code of the 0x800f08 family.

Updates are built on the component store, where Windows keeps its own files. If it is damaged, the update cannot finish. DISM downloads clean copies of damaged files and SFC then repairs the system files that depend on them.

1. Open an elevated command window. Right-click Start and select Terminal (Admin), or type cmd in the search box, right-click Command Prompt and select Run as administrator. Select Yes when Windows asks for permission.

   

2. Run DISM first. Type the command below and press Enter. DISM downloads clean copies of damaged components from Windows Update, so it can take several minutes. Wait until it says The operation completed successfully.

   DISM.exe /Online /Cleanup-Image /RestoreHealth

   

3. Run System File Checker. In the same window, type the command below and press Enter. Do not close the window until the verification reaches 100%.

   sfc /scannow

   

4. Read the result and restart. Compare the last message with the table below this guide, then restart the PC so that repaired files are loaded.

   

These steps were written for Windows 11 24H2 and 25H2. The full page with the other versions and what each result means: Run DISM and SFC to repair Windows system files

Fix 7. Run the Windows Update troubleshooter

5 minutesNo riskYou prefer an automatic check before a reinstall.

The troubleshooter checks the update services, their settings and the pending update state, and repairs what it finds. It does not free space or replace a broken upgrade download, so it comes after the specific fixes.

1. Open Troubleshoot settings. Select Start > Settings > System > Troubleshoot.
2. Open the list of troubleshooters. Select Other troubleshooters.

   

3. Run the Windows Update troubleshooter. Under Most frequent, select Run next to Windows Update. The Get Help app opens and starts the checks.

   

4. Read the result. Wait until Get Help finishes. If it found and fixed a problem, it says so and asks whether this solved the problem. Answer the question so it can offer the next step.

   

5. Restart the PC. Restart when the troubleshooter finishes, even if it does not ask you to.
6. Check for updates again. Select Start > Settings > Windows Update > Check for updates, and install the updates it finds.

These steps were written for Windows 11 (screenshots: 26H2). The full page with the other versions and what each result means: Run the Windows Update troubleshooter

Fix 8. Reinstall Windows over itself and keep your apps and files

1 to 2 hoursLow riskEvery update fails with 0x8024a203 and Fix 1 to Fix 7 did not help.

A repair reinstall replaces Windows Update, the component store and the system files with clean copies of the current Windows version. That removes every Windows cause at once, while apps, files and settings stay.

1. Open Recovery in Settings. Open Settings > System > Recovery. Next to Fix problems using Windows Update, select Reinstall now. This keeps your apps, files and settings.

   

2. Start the reinstall. Choose whether the PC may restart on its own 15 minutes after the installation, then select OK.
3. Wait and restart. Windows Update downloads and installs a repair copy of your current Windows version. Keep the PC plugged in and online, and restart it when asked.

These steps were written for Windows 11 22H2 and later. The full page with the other versions and what each result means: Reinstall Windows without losing files

If error 0x8024a203 is still there

Since Microsoft does not explain 0x8024a203, the useful information is the second code you get when the same update runs outside Windows Update. Collect it before you ask for help.

1. Note the exact name of the failed update from Update history.
2. For a KB update, note the code the Catalog installer showed in Fix 4.
3. For an upgrade, note the code Setup showed in Fix 3. Setup writes its logs to C:\$Windows.~BT\Sources\Panther.
4. Press Win + R, type winver and press Enter. Note the version and build.
5. Send all of this to Microsoft support, or to your administrator on a work PC.

How to keep error 0x8024a203 from coming back

If the error came with the Windows 11 upgrade and you are not ready to upgrade, you can stay on Windows 10 for now, but it no longer gets regular security fixes. Plan the upgrade rather than hiding it.

Frequently asked questions

What is error 0x8024a203?

It is a Windows Update error that shows up when an update or the Windows 11 upgrade cannot finish. Microsoft's Windows Update error list does not include this exact code. It sits in the 0x8024A range, which Microsoft calls Automatic Update Errors, next to documented codes such as 0x8024A000 and 0x8024AFFF. In practice it behaves like a general failure, so the name of the failed update and the steps in Fix 1 to Fix 4 matter more than the code itself.

How do I fix 0x8024a203 during the Windows 11 upgrade?

First restart and select Retry, because one report on Microsoft Q&A says the upgrade simply worked on the next try. If it fails again, check the PC with PC Health Check, then run the upgrade with the Windows 11 Installation Assistant or setup.exe from the Windows 11 ISO, as in Fix 3. Both skip the Windows Update download, and if something really blocks the upgrade, Setup shows a documented code that names it.

Is 0x8024a203 a Windows 10 or a Windows 11 error?

Both. The reader's question on this page came from Windows 10, and most current searches add Windows 11 upgrade or Windows 11 update to the code. The Windows Update Agent works the same way on both systems, so the fixes are the same; only some Settings paths differ, and the steps give both. Windows 10 left support on 14 October 2025, so on Windows 10 the best long-term fix is the move to Windows 11.

What will these fixes change on my PC?

Fix 1, Fix 6 and Fix 7 change nothing you would notice. Fix 2 deletes temporary files and whatever you choose to remove. Fix 5 renames the Windows Update cache folders, so the update history page may look empty, but installed updates stay. Fix 3 and Fix 8 reinstall Windows and keep your files, apps and settings, which is why you back up first. None of the fixes turns off security features.

Does 0x8024a203 mean my disk is full?

Not always, but check it. The only report with a clear cause, a Windows 10 Mobile phone in 2017, failed with this code because the update did not fit in its storage after downloading. On a PC, open Settings > System > Storage. If drive C: is close to full, free space with Fix 2 and retry. If there is plenty of space, go on with Fix 3 or Fix 4 depending on what failed.

What is 0x8024a205, is it the same error?

It is a neighbour in the same 0x8024A range of Automatic Updates errors. Like 0x8024a203, it is not on Microsoft's public error list, so we could not confirm what it means. The same approach applies: read the name of the failed update, restart and retry, free space, and use the Installation Assistant or the Update Catalog to install the update outside Windows Update.

Can I fix 0x8024a203 by turning off my antivirus?

Not as a fix. No source ties this code to security software, and turning protection off leaves the PC exposed. If you suspect another program interferes with updates, a clean boot is the safer test: How to perform a clean boot in Windows. If you still want to rule out the antivirus, pause it for one try only and turn it on right after: Turn off Microsoft Defender protection for a moment. Start with Fix 1 to Fix 4, which cover the usual cases.

Will I lose my files if I reinstall Windows to fix this?

Not with the repair reinstall in Fix 8 or the upgrade in Fix 3. Both keep your apps, files and settings. Reset this PC with Keep my files is different: it keeps your files but removes installed apps. Back up the files you cannot lose before any reinstall, and keep a laptop plugged in until it finishes, because a reinstall that stops halfway can leave Windows unable to start.

I searched for how to fix this, isko kese theek kre, chto delat or net takogo. Is this page for me?

Yes, if you see 0x8024a203. Isko kese theek kre is Hindi for how do I fix this, and chto delat is Russian for what should I do. The code is the same in every language of Windows. If a menu named in the steps is not there (net takogo means there is no such thing), your Windows is probably the other version: the steps give the Windows 10 path in brackets. Menu names here are the English ones, so follow their position in Settings.