ERROR_CS_ENCRYPTION_EXISTING_ENCRYPTED_FILE - 6019 (0x1783)
File is encrypted and should be opened in Client Side Encryption mode.
Updated: Feb 21, 2026
Technical Meaning
The error code ERROR_CS_ENCRYPTION_EXISTING_ENCRYPTED_FILE with the numeric value 6019 and hexadecimal representation 0x1783 indicates that a file is already encrypted using Client Side Encryption (CSE) mode. This means that the file cannot be opened or accessed in its current state without being decrypted first.
Error Details
This error typically occurs when an attempt is made to open a file for reading, writing, or other operations that require access to unencrypted data, but the file is already encrypted using CSE mode. The system expects the operation to be performed in Client Side Encryption mode, which involves decrypting the file on the client side before performing any operations.
Usage Context
This error code is relevant in scenarios where files are stored and managed using CSE encryption. It can occur when attempting to open a file for reading or writing, especially if the application or system does not support Client Side Encryption mode.
Developer Interpretation
Developers should ensure that their applications handle encrypted files correctly by supporting Client Side Encryption mode. When encountering this error, developers should verify that the operation is being performed in the correct context and that the necessary encryption keys are available for decryption.
Related Errors
ERROR_FILE_NOT_ENCRYPTED(0x80070561) - Indicates an attempt to perform a CSE operation on a file that is not encrypted.ERROR_CSCSTOPPED_BY_POLICY(0x800704F3) - Indicates that the Client Side Encryption service has been stopped or disabled by policy, which can affect operations on encrypted files.
FAQ
Q: What does this error mean?
A: This error indicates that a file is already encrypted using Client Side Encryption mode and cannot be accessed without being decrypted first. Ensure your application supports CSE mode to handle such files correctly.
Q: How can I resolve this issue?
A: Verify that the operation is performed in Client Side Encryption mode, and ensure that the necessary encryption keys are available for decryption. If using a third-party tool or library, check its documentation for support of CSE operations.
Summary
The ERROR_CS_ENCRYPTION_EXISTING_ENCRYPTED_FILE error code indicates that an attempt was made to access an already encrypted file in a mode that requires Client Side Encryption. Developers should ensure their applications handle such files correctly by supporting the appropriate encryption modes and verifying the availability of necessary keys.