For a critical SSD warning with “Reliability degraded” on Windows 11, the issue is with the drive’s health, not something that can be “repaired” in software. The correct actions are:
- Back up data immediately
- Copy important files to another drive or cloud storage as soon as possible.
- Use any backup method described in the Windows backup guidance: Back up your data.
- Confirm the warning details in Windows 11
- Go to Start > Settings > System > Storage > Advanced storage settings > Disks & volumes.
- Select the affected disk > Properties to review:
- Critical warning: “Reliability is degraded” means there are significant media-related errors or an internal NVM subsystem error.
- Estimated remaining life: “Limited” indicates the drive is near or at its expected wear limit.
- Available spare (97%) and Temperature (37°C) are still normal, but the reliability flag indicates the drive is no longer fully trustworthy.
- Plan to replace the SSD
- A “Reliability is degraded” warning is a predictive failure signal. The drive may still work now, but it is at increased risk of failure.
- Replacement of the SSD is the appropriate fix; software tools cannot restore its reliability.
- After replacement
- Reinstall Windows or restore from a backup image to the new SSD.
- Keep monitoring the new drive’s health via the same Disks & volumes properties page.
Windows only monitors NVMe SSDs for these health attributes; the warning is based on the drive’s own telemetry and should be treated as serious.
References: