The error code 0x00000027 indicates a problem with the Redirected Drive Buffering SubSystem (Rdbss.sys) on Windows systems. This error translates to “RDR_FILE_SYSTEM” and often leads to a Blue Screen of Death (BSOD) crash. Here’s a breakdown of the causes, solutions, and additional resources to troubleshoot the 0x00000027 error:

Causes:

• Failing Device Drivers: Outdated, buggy, or incompatible device drivers, especially those related to storage controllers or the SMB (Server Message Block) protocol, can cause issues with file system management and trigger the error.
• Anti-virus Software Issues: In some cases, incompatibility or conflicts between your anti-virus software and Windows file system management can lead to the 0x00000027 error.
• Corrupted System Files: Damaged system files crucial for file system management or driver interaction can contribute to the error.
• Hard Drive Issues (Less Likely): While less frequent, physical damage or errors on the hard drive can also lead to problems with file system access and potentially cause the 0x00000027 error.

Troubleshooting Steps:

Here are some approaches you can take to fix the 0x00000027 error:

1. Basic Troubleshooting:

   • Restart your computer: A simple restart can sometimes clear temporary glitches that might be causing the problem.

2. Update Windows and Drivers: Make sure your Windows system and all device drivers, particularly storage controllers and SMB-related drivers, are up-to-date.

3. Check for Conflicting Anti-virus Software:

   • Temporarily disable your anti-virus software (if safe to do so) and see if the error resolves. If it does, consider adding an exclusion for legitimate system processes or explore compatibility options with your anti-virus provider.

4. System File Checker (SFC) and Deployment Image Servicing and Management (DISM) (if comfortable):

   • These tools can scan and repair corrupted system files that might be contributing to the error. Instructions on running these tools can be found on the Microsoft website: https://answers.microsoft.com/en-us/windows/forum/all/how-to-run-chkdsk/176e0673-72be-48fd-97e0-057e41dbd8af

5. Disk Check (Chkdsk):

   • Use the built-in Check Disk utility (chkdsk) to scan your hard drive for errors and attempt to fix them. There are two options:
     • Chkdsk /f: This option scans the drive and fixes errors it finds. However, it might require dismounting the drive, potentially leading to data loss. Use with caution and ensure you have backups.
     • Chkdsk /r: This option locates bad sectors on the drive and recovers readable information. It also requires dismounting the drive and can lead to data loss. Use with extreme caution and only if /f fails.
   • Search online for specific instructions on using chkdsk for your Windows version, including how to choose between /f and /r options.

Additional Considerations:

• Safe Mode: If the error occurs when booting your computer normally, try booting into Safe Mode. If the error doesn’t appear in Safe Mode, it suggests a problem with a recently installed driver or program.
• System Restore: If you recently made system changes (e.g., installed new software or updated drivers), consider performing a System Restore to revert your system to a point before the error started occurring.
• Data Backup (Important): If you suspect a failing hard drive, prioritize backing up your important data as soon as possible. There’s a chance the drive might be failing, and data recovery after a complete failure becomes more complex and expensive.
• Hardware Diagnostics (if necessary): While less likely the sole cause, hardware issues with the storage device can contribute to the 0x00000027 error. If none of the software solutions work, consult a qualified technician for hardware diagnostics and potential replacements.

Additional Resources:

• Microsoft article on troubleshooting Blue Screen errors: https://support.microsoft.com/en-us/windows/resolving-blue-screen-errors-in-windows-60b01860-58f2-be66-7516-5c45a66ae3c6
• 9 Solutions to Help You Fix 0x00000027 RDR_FILE_SYSTEM Easily: https://www.partitionwizard.com/partitionmanager/boot-damaged-windows.html

Remember: If you’re not comfortable with advanced troubleshooting steps like chkdsk or disabling anti-virus software, seek help from a qualified technician to avoid potential data loss.