Error
Error Code:
2066
MySQL Error 2066: Compression Algorithm Mismatch
Description
MySQL Error 2066 indicates that a connection attempt failed because the client and server have incompatible or wrongly configured compression algorithms. This typically occurs when the client requests a compression method that the server does not support or is not configured to use, preventing a successful connection.
Error Message
Connection failed due to wrongly configured compression algorithm
Known Causes
3 known causesClient requests unsupported algorithm
The MySQL client is configured to use a compression algorithm (e.g., ZSTD, ZLIB) that the connected MySQL server version or build does not support.
Server compression configuration mismatch
The MySQL server's configuration either explicitly disables compression, or does not allow the specific compression algorithm requested by the client connection.
Incompatible MySQL versions
Significant version differences between the MySQL client and server can lead to a mismatch in supported compression algorithms and their implementations.
Solutions
Coming SoonDetailed step-by-step solutions for this error are being prepared. In the meantime, try these general troubleshooting tips:
General Troubleshooting Tips
- Check the error message carefully for specific details
- Review recent changes that might have caused the error
- Search for the exact error code in the official documentation
- Check log files for additional context
- Try restarting the application or service