How to fix “The specified file could not be decrypted. [ERROR_DECRYPTION_FAILED (0x1771)]” – Error Code 6001


Error Code 6001

Error code Error Code 6001 is a common Windows issue that typically arises from “The specified file could not be decrypted. [ERROR_DECRYPTION_FAILED (0x1771)]”.


This article delves into resolving the issue identified by the error code Error Code 6001: “The specified file could not be decrypted. [ERROR_DECRYPTION_FAILED (0x1771)]”. This error can hinder your system’s performance, and we’ll guide you through effective fixes.

Identifying the Problem

Error Code 6001 typically occurs when:

  • A file is encrypted using a different key or algorithm, making it inaccessible.
  • Antivirus software or encryption settings interfere with file operations.
  • Corrupted system files disrupt cryptographic processes.

Common Fixes

1. Disable Antivirus Software Temporarily

Antivirus programs can sometimes block file decryption. Disable it temporarily, decrypt the file, and then re-enable the software.

2. Check Encryption Settings

Ensure the file encryption settings are correct. Corrupted settings can hinder decryption. Right-click the file, select “Properties,” and verify the encryption settings.

3. Run System File Checker

Corrupted system files can affect encryption processes. Run the System File Checker (SFC) scan using the following steps:

  • Press Windows Key + R to open Run.
  • Type “cmd” and press Ctrl + Shift + Enter to open Command Prompt as administrator.
  • Type “sfc /scannow” and press Enter.

4. Reset Cryptographic Services

Resetting cryptographic services can resolve decryption issues. Open Command Prompt as administrator and run the following commands:

net stop cryptsvc
net start cryptsvc

Advanced Troubleshooting

1. Use Third-Party Decryption Tools

If the file is severely encrypted, specialized decryption tools may be needed. Consider using reliable third-party tools such as PhotoRec or Recuva.

2. Check for Malware

Malware can disrupt encryption processes. Run a comprehensive malware scan to detect and remove any potential threats.

3. Reinstall Operating System

As a last resort, consider reinstalling your operating system to completely remove any lingering issues that may be causing the decryption failure.


Error Code 6001 can be resolved using the methods outlined in this guide. By following these fixes, you can effectively decrypt files and restore your system’s functionality. To prevent this error in the future, keep your operating system and software up-to-date, maintain proper file encryption practices, and regularly scan for malware.