Error
Error Code:
332
MongoDB Error 332: Unsupported Version Downgrade
Description
Error 332, 'Cannot Downgrade', indicates that an attempt to revert a MongoDB instance or deployment to an older version has failed. This typically occurs because MongoDB does not support downgrading to previous major versions after an upgrade, due to potential data format incompatibilities or feature set differences. Once data has been written or modified by a newer version, it often cannot be safely read or interpreted by an older one.
Error Message
Cannot Downgrade
Known Causes
4 known causesMajor Version Downgrade Attempt
Trying to revert a MongoDB instance from a newer major version (e.g., 6.0) to an older major version (e.g., 5.0) after the upgrade has completed.
Data Written by Newer Version
After upgrading, data has been modified or new data written using features or formats exclusive to the newer MongoDB version, making it incompatible with older versions.
Feature Compatibility Version Set
The `featureCompatibilityVersion` has been explicitly set to the newer version, indicating that data structures and features are now aligned with that version, preventing downgrades.
Incomplete Upgrade State
An upgrade process was started but not fully completed or failed, leading to an attempt to revert to the previous state, which is not supported as a downgrade.
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