How to fix Cldflt.sys blue screen error?

If you encounter a SYSTEM_SERVICE_EXCEPTION blue screen error and find that the Cldflt.sys file is faulty, this article will provide you with ways to resolve this issue.

What is Cldflt.sys?

The cloud file small filter driver (Cldflt.sys) is a key service in the Windows system and is used to manage the Windows cloud storage function. Its role is to assist users in synchronizing and managing data files between local devices and the cloud to ensure timely updates of file storage.

What causes Cldflt.sys BSOD error?

Problems with OneDrive: Issues with Microsoft OneDrive can be the main cause of the error due to Cldflt.sys file or errors related to cloud storage and its synchronization. If the communication between the cloud server and the local computer is interrupted, the cldflt.sys file will not function as expected. A malfunctioning system file may cause a crash. It can also generate system exceptions or stop codes that cause crashes.

Windows system file failure may cause the cloud filter driver to interrupt, which is an important component of operating system services. Even if a specific file is not damaged, other associated cloud storage drive file issues can affect overall functionality.

How to fix Cldflt.sys blue screen error?

To fix the SYSTEM_SERVICE_EXCEPTION Cldflt.sys blue screen on your Windows computer, follow these solutions:

Reset or reinstall OneDrive

Run System File Checker and DISM Tool

Making changes in the Windows Registry

Before you begin, please make sure your Windows operating system and OneDrive are updated to the latest versions.

1]Reset or reinstall OneDrive

You can reset OneDrive and check if the error stops appearing again.

If this doesn't work, uninstalling and reinstalling OneDrive can also be performed by following these steps:

• Open the Run dialog box and enter ms-settings:application features to open the Apps and Features option in Windows
• Search for Microsoft OneDrive in the list of installed Windows features.
• Click the three dots next to Microsoft OneDrive, click Uninstall, and then follow the on-screen instructions to remove the app.
• After uninstalling, download the OneDrive installation file to install.

2]Run System File Checker and DISM Tool

Since system file corruption or functional inconsistency may be the main cause of this problem, performing a system file check can effectively resolve system crashes. The SFC utility in Windows can help repair corrupted system files.

In addition to System File Checker, DISM utility can also help repair Windows system files or components. Deployment Image Servicing and Management Tool (DISM) for repairing system files and Windows components where SFC may not resolve the issue.

3]Changes in the Windows Registry

Edit the Windows registry to ensure strict compliance with the Cloud Filter driver's protocol. At the same time, data or file transfer happens between the computer and the cloud, which also helps solve the problem. To make the required changes,

• Open the Windows registry by typing regdit in the Run dialog box.
• Navigate to

HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesCldFltInstances

• Right-click the DefaultInstant key, and then click Modify.
• Enter CldFlt in the Value Data field and click OK.

• Restart the system for the changes to take effect.

You can also execute the following Windows Terminal (Administrative) command to update the registry:

Reg添加HKLMSystemCurrentControlSetServicesCldfltinstances/f/v默认实例/t reg_sz/d“CldFlt”

If all the above solutions do not resolve the error, restore the system to an earlier stable point when the error did not occur.

I hope this article was easy to understand and you solved the Cldflt.sys BSOD error.

How to fix BSOD startup?

First, restart your computer and press the unique key (usually F8) multiple times to access the repair options. Then, select Troubleshooting, then Advanced Options, then Startup Repair. It should help with basic startup issues.

重新安装Windows可以修复BSOD吗？

Reinstalling Windows can often fix Blue Screen of Death (BSOD) errors caused by corrupt system files or software issues. It gives you a fresh start, removing any problematic files or configurations that might be causing the BSOD. This is the last measure if your BSOD is not resolved using any suggestion.

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