Synology NAS Error Code 58: How to Fix It
Medium 30-60 minutes Medium Severity
Verified June 2026
- Error Code
- 58
- Brand
- Synology
- Product Type
- nas
- Severity
- Medium
- DIY Difficulty
- Medium
- Estimated Fix Time
- 30-60 minutes
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Tools You'll Need
- Web browser (Chrome, Firefox, or Edge recommended)
- Computer connected to the same local network as the NAS
- Ethernet cable (for stable wired connection during update)
- Synology Assistant software (free download from Synology website)
- Downloaded DSM .pat update file (from Synology Download Center)
How to Fix Error Code 58
-
Back Up Your Data Before Proceeding
Never skip a backup before a system update. Data loss, though rare in this scenario, can occur if the update process encounters additional unexpected errors. -
Clear the Corrupted Update Package
-
Check Available System Partition Space
-
Retry the Automatic DSM Update
Do not power off or restart the NAS manually during the update process. Interrupting a running update can cause more serious system errors. -
Manually Download and Apply the DSM Update Package
Only download DSM packages directly from Synology's official website. Never use third-party sources, as unofficial packages can brick your NAS. -
Verify Network Stability and Retry If Needed
-
Reboot the NAS and Retry
Allow the NAS to fully complete its restart cycle before logging back in. Accessing DSM too early during boot may cause interface errors. -
Use Synology Assistant for Recovery If DSM Is Inaccessible
Reinstalling DSM via Synology Assistant will reset system settings but should not delete data stored on your data volumes. However, always have a backup before proceeding.
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When to Call a Professional
If you have followed all steps including the Synology Assistant recovery method and the NAS still cannot complete the DSM update, or if the NAS becomes completely unresponsive and does not appear on your network at all, contact Synology Technical Support directly at help.synology.com. Professional help is also recommended if you suspect hardware failure on a system drive, if you are unfamiliar with network configuration, or if the NAS is storing mission-critical business data that cannot be risked. Synology offers paid support and RMA services for hardware-level issues.Frequently Asked Questions
What does Synology Error Code 58 mean?
Synology Error Code 58 means the DSM update package that was downloaded or uploaded is corrupted and cannot be used for the update. This prevents DSM from upgrading until a valid, uncorrupted package is supplied.
Will Error Code 58 delete my data?
No, Error Code 58 is a software update error and does not affect the data stored on your NAS drives. Your files remain intact. However, always maintain regular backups as a best practice before any system update.
Why does my Synology DSM update keep getting corrupted?
The most common causes are an unstable internet connection during download, insufficient free space on the system partition, a temporary network glitch, or a browser issue interrupting the transfer. Using a wired Ethernet connection and manually downloading the .pat file from Synology's website usually resolves this.
Can I skip a DSM update to avoid Error 58?
You can temporarily postpone a DSM update, but it is not recommended to skip updates long-term as they include important security patches and bug fixes. Fix the Error 58 issue using the manual update method and keep your DSM version current.
How do I find the correct DSM update file for my Synology NAS model?
Go to www.synology.com/support/download, enter your exact NAS model number (found on the label on the back or bottom of the unit, e.g., DS923+, DS1522+), select your current DSM version, and download the .pat file listed under 'DSM Manager.' Always verify you are selecting the file that matches your exact model to avoid compatibility errors.