Fix Windows Defender Error 1297 on Windows 11/10 – TheWindowsClub

When you try to launch Microsoft Defender app or when you try to run a scan on your Windows 11 or Windows 10 computer, the app may fail to open or crash and then throw the error code 1297. In this post, we identfy likely causes, as well as provide the most suitable solutions to the issue.

Error 1297 Windows Defender Error 1297
Error 1297: Windows Defender has encountered a problem and needs to close. We are sorry for the inconvenience.

Fix Windows Defender Error 1297

If you get the Windows Defender Error 1297 when you try to launch the app or when running a scan on your Windows 11/10 device, you can try our recommended solutions below in no particular order and see what works for you in fixing the error. Make sure your PC is updated and see if the error is reoccurs – before you try the solutions outlined below.

  1. Run SFC scan
  2. Troubleshoot in Clean Boot state
  3. Reset Windows Security
  4. Perform System Restore
  5. Reset Windows 11/10

Let’s take a look at the description of the process involved concerning each of the listed solutions.

1] Run SFC scan

The Windows Defender Error 1297 that is triggered on your Windows 11/10 PC could be due to corrupted system files. In this case, you can begin troubleshooting by running SFC scan on your device and see if that resolves the issue.

The sfc /scannow command will scan all protected system files, and replace corrupted files with a cached copy that is located in a compressed folder at %WinDir%System32dllcache. In most cases, if some Windows functions aren’t working or Windows crashes, use the System File Checker to scan Windows and restore your files.

2] Troubleshoot in Clean Boot state

Third-party apps and services might be interfering with the smooth operation of Microsoft Defender on your system, hence the error in highlight. So, you can troubleshoot in Clean Boot state and see if the issue at hand is resolved. If while in this system state the Windows Defender opens and runs smoothly without crashing or any sort of issues, then you may need to manually enable one process after the other and see which is the offender that that triggers the error in view on your device. Once you have identified it, you need to disable or uninstall the software that uses this culprit process.

Also make sure no other security software is installed and running on your device – if any, you can uninstall the third-party security software using the dedicated AV removal tool to remove all files associated with your antivirus program – alternatively, you can use any free Uninstaller Software.

Read: Windows Defender error 0x800700aa, The Service couldn’t be started

3] Reset Windows Security

If Windows Defender is not opening or crashing during normal operations as is the case here, it could be the app is suffering a temporary glitch or is corrupted. In this case, an effective fix will be to reset Windows Security or reinstall Windows Defender on your PC.

Read: Windows Security in Windows 11 not opening or working

4] Perform System Restore

If Windows Defender app was working normally up until this time, it’s entirely possible that the issue was facilitated by a change that your system has gone through recently which …….

Source: https://www.thewindowsclub.com/fix-windows-defender-error-1297

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