Error 0x009387D3 has no verified public Microsoft definition. Treat it as a clue, not a diagnosis. The useful details are the complete message, the app or operation that produced it, whether Windows restarted or displayed a blue or black screen, and what Event Viewer or Reliability Monitor recorded at the same time.
Use the least disruptive recovery path first: remove recently added hardware, try Safe Mode, inspect drivers, install pending updates, check free disk space, and use System Restore when appropriate. If Windows cannot start, run Startup Repair from the Windows Recovery Environment.
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What error 0x009387D3 actually tells you
There is no authoritative Microsoft explanation that maps the hexadecimal value 0x009387D3 to one specific component or fix. It may appear in a crash dialog, an application log, an update failure, or a stop-error screen. The same-looking number can therefore require completely different troubleshooting depending on its context.
Do these 3 things before closing this tab:
1Clear out junk files and repair common Windows errors2Fix the driver behind crashes, sound loss and screen glitches3Repair Windows errors before they cause bigger problemsMicrosoft describes a blue-screen or stop-code failure as a serious problem that makes Windows shut down or restart to protect data. Microsoft Learn also explains that Windows stops when a condition compromises safe system operation. Those descriptions apply to stop errors generally; they do not identify 0x009387D3.
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Microsoft’s general Windows Client analysis attributes approximately 70% of stop errors to third-party driver code, 10% to hardware, 5% to Microsoft code, and 15% to unknown causes because memory is too corrupted to analyze. These are broad stop-error figures, not a probability calculation for this hexadecimal value. Do not replace a driver or RAM solely because the code contains no recognizable name.
Record the circumstances before changing anything
Write down the complete text surrounding the code and answer these questions:
- Did the message appear while starting Windows, signing in, shutting down, installing an update, launching one application, or connecting a device?
- Was there a blue screen, a black screen, an automatic restart, or only a normal application error?
- Did the problem begin after a graphics card, USB device, printer, storage drive, memory module, driver, or Windows update was added?
- Does the failure happen once, at every startup, or only during a repeatable action?
- What time did it occur, and what did Event Viewer or Reliability Monitor list immediately before the failure?
To open Reliability Monitor, press the Windows key, type reliability, and select View reliability history. Select the red failure on the date in question and read the technical details. For Event Viewer, right-click Start, choose Event Viewer, then inspect Windows Logs > System and Windows Logs > Application around the recorded time. Save the event source, event ID, faulting module, and any accompanying stop code. Those details are more actionable than the hexadecimal number by itself.
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| Situation | Start with | Why this order |
|---|---|---|
| Windows still boots and the failure happened once | Restart, disconnect newly added hardware, install updates, and check logs | These steps are reversible and can clear a transient fault |
| Repeated crashes, but Windows reaches the desktop | Safe Mode, Device Manager review, driver rollback or removal, disk-space check | Safe Mode limits third-party software and helps isolate drivers |
| Failure began after hardware or a driver change | Power down, remove the new device if practical, then roll back or uninstall its driver | Reversing the recent change tests the strongest lead first |
| Failure occurs during Windows Update | Update troubleshooter, date and time check, driver update, SoftwareDistribution reset | These steps target the update path without resetting Windows |
| Windows cannot reach sign-in | Windows Recovery Environment and Startup Repair | Recovery tools work outside the damaged startup session |
| All low-risk steps fail | System Restore, another recovery option, or—only after backups—reset or reinstall | These actions are more disruptive and can remove apps or settings |
Fixes when Windows still starts
1. Restart and disconnect recent hardware
Save work and restart normally once. If the error followed a newly connected USB device, printer, adapter, storage drive, expansion card, or other hardware, shut down completely and disconnect that device. Start Windows with only essential peripherals attached. If the error disappears, reconnect devices one at a time and test between connections. A repeatable failure after reconnecting one device points to that device, its driver, its cable, or a compatibility problem.
Do not open a desktop case or remove internal components while the computer is powered. For a laptop or sealed device, use the manufacturer’s service procedure rather than forcing a component out.
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2. Start Windows in Safe Mode
Safe Mode loads a limited set of drivers and services. If the problem does not occur there, a third-party driver or startup component becomes more likely, although Safe Mode is not proof of a particular cause.
From a working desktop, open Settings > System > Recovery on Windows 11 or Settings > Update & Security > Recovery on Windows 10. Under Advanced startup, select Restart now. At the recovery screen choose Troubleshoot > Advanced options > Startup Settings > Restart, then press 4 or F4 for Safe Mode, or 5 or F5 for Safe Mode with Networking.
If Windows repeatedly fails before the desktop, interrupt startup by holding the power button to turn the computer off as Windows begins loading. Repeat this interruption until Windows enters the recovery environment, then use the same Troubleshoot > Advanced options > Startup Settings route. Avoid repeatedly cutting power once recovery has appeared.
3. Inspect Device Manager and the driver history
Right-click Start and select Device Manager. Expand categories related to the hardware involved, such as Display adapters, Network adapters, Sound, video and game controllers, Universal Serial Bus controllers, or Printers. A yellow warning icon indicates that Windows has identified a problem with that device.
Right-click the suspected device and open Properties. Read the status message on the General tab and note the driver provider, date, and version on the Driver tab. Use these options in order:
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- Select Update driver and allow Windows to search, or install a driver supplied by the device manufacturer for your exact model and Windows edition.
- If the issue began immediately after a driver update and Roll Back Driver is available, use it and restart.
- If rollback is unavailable and the device is clearly implicated, choose Uninstall device, select the option to remove the driver package only when you are certain it is the problem, and restart. Windows may reinstall a basic driver.
- If disabling the device makes the crashes stop, leave it disabled temporarily while obtaining a corrected driver. Do not disable storage or boot-critical hardware casually.
Keep a record of every driver change. If the device disappears from Device Manager, returns with a different warning, or causes a new failure, undo the last change where possible.
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4. Install Windows and device updates
Open Settings > Windows Update on Windows 11, or Settings > Update & Security > Windows Update on Windows 10. Select Check for updates, install available updates, and restart when requested. Also apply updated drivers from the computer or device manufacturer when Device Manager identifies a hardware issue. Do not install a driver intended for a different model or Windows architecture.
If the error appears only after a particular update, note its knowledge-base number in Update history. Removing an update can be appropriate when the timing is conclusive, but create a restore point or other recovery path first and avoid removing security updates unless Microsoft or the device maker directs you to do so.
5. Check free disk space
Windows needs working space for updates, paging, logs, and recovery operations. Microsoft recommends keeping 10% to 15% of the system drive free as a general target. In File Explorer, open This PC and check the Windows drive, normally C:. Remove or move files you recognize, empty Recycle Bin, and uninstall applications you no longer need through Settings > Apps. Do not delete unknown files from C:Windows or driver folders manually.
After freeing space, restart and retry the action that produced the error. If the drive is nearly full again, investigate large downloads, restore points, temporary files, or user profiles rather than repeatedly deleting random system files.
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6. Use System Restore when the timing is clear
System Restore can return system files, drivers, and settings to an earlier restore point without intentionally removing personal documents. Search for Create a restore point, open the System Protection tab, select System Restore, and choose a point created before the first occurrence. Review the affected programs and drivers before confirming. If no suitable point exists, choose another recovery option instead of inventing a cause.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.If the error occurs during Windows Update
Run the Windows Update troubleshooter
Open Settings > System > Troubleshoot > Other troubleshooters on Windows 11, or Settings > Update & Security > Troubleshoot > Additional troubleshooters on Windows 10. Run Windows Update, apply any recommended correction, restart, and try the update again.
Verify date, time, and drivers
Open Settings > Time & language > Date & time on Windows 11, or Settings > Time & Language > Date & time on Windows 10. Enable automatic time and time-zone settings where appropriate, then synchronize. Incorrect time can interfere with update validation. Update third-party drivers as described in Device Manager before retrying.
Reset the update download cache
Use this procedure only when the troubleshooter and basic checks do not resolve an update-specific failure. Sign in with an administrator account, open Windows Terminal (Admin) or Command Prompt (Admin), and run:
net stop wuauserv
net stop bitsOpen File Explorer and navigate to C:WindowsSoftwareDistribution. Delete the contents of that folder, not the folder itself. Windows will recreate the files. Return to the elevated terminal and run:
net start wuauserv
net start bitsRestart Windows and check for updates again. If a service refuses to stop or restart, record the exact message rather than deleting other system folders.
If Windows will not boot
Open Windows Recovery Environment
Windows Recovery Environment (WinRE) may appear automatically after failed starts. You can also reach it from a working installation by holding Shift while selecting Power > Restart, or through Settings > System > Recovery > Advanced startup > Restart now on Windows 11. On Windows 10, use Settings > Update & Security > Recovery > Advanced startup > Restart now.
Run Startup Repair
In WinRE choose Troubleshoot > Advanced options > Startup Repair. Select the Windows installation if prompted and let the automated repair finish. It can correct startup configuration problems that prevent Windows from loading. Disconnect nonessential peripherals while it runs and do not power off the computer unless the screen has been unresponsive for an extended period.
If Startup Repair cannot resolve the problem, return to Advanced options. Safe Mode can help isolate a driver, and System Restore can return the installation to an earlier point when one is available. Advanced boot-repair procedures are appropriate only when you understand the command and have a backup; a mistaken boot change can make recovery harder. Resetting or reinstalling Windows should be a last resort after copying personal files and confirming that hardware is not failing.
Confirm the result and decide what to do next
After a repair, restart normally several times, reconnect removed devices one at a time, and repeat the operation that previously triggered 0x009387D3. Check Reliability Monitor for new red failures and Event Viewer for recurring warnings. If the same device or driver appears in every event, contact its manufacturer with the model, driver version, complete error text, and timestamps.
If crashes continue in Safe Mode, occur with different applications, or happen before third-party drivers load, broaden the investigation to hardware and Windows recovery rather than repeatedly reinstalling one application. Preserve important files before any reset or reinstall. A single successful boot does not establish that the underlying problem is gone.
Windows 10 support status
Microsoft ended support for Windows 10 on October 14, 2025. A Windows 10 computer can still start after that date, but it no longer receives the same ongoing support and security servicing as a supported release. When troubleshooting permits, check whether the hardware can run a supported Windows 11 edition and plan an upgrade or replacement path. The menu names above distinguish Windows 10 and Windows 11 because the recovery workflow is similar while support status is different.
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