How New bug in firmware 5.31.102?

several users have reported issues after updating to My Cloud OS 5 firmware version 5.31.102, especially affecting single-bay My Cloud devices.

🐞 What Users Are Experiencing

A recent thread in the WD Community highlights a notable problem: after installing firmware 5.31.102, owners of My Cloud EX devices report a loss of DNS access to shares, meaning mapped network drives don’t resolve correctly

Additionally, the firmware release notes mention several “other minor bug fixes,” but they make no mention of this DNS issue

os5releasenotes.mycloud.com

⚠️ Why It Matters

Without proper DNS resolution, your device may still appear online, yet network shares become inaccessible—seriously disrupting file access from Windows, Mac, or mobile apps like WD My Cloud.

🛠 What You Can Do

Here are practical steps to address the issue:

Workaround – Use IP Addresses

Temporarily map network shares using the NAS’s local IP address (e.g., \\192.168.1.50\Public) instead of names.

Check for Hotfix or Rollback

WD may release a hotfix or newer firmware version. Check the official My Cloud support page or user forums for updates or rollback methods.

Restart Services

Some users have had temporary success by restarting SMB, DNS, or networking services via SSH, if you’re comfortable with command-line access.

Monitor Community Updates

Join the WD Community thread “New bug in firmware 5.31.102?”—keep following user reports and WD responses

Contact WD Support

If DNS issue persists, contact WD Support, referencing this firmware version.

✅ Bottom Line

Firmware 5.31.102 may have inadvertently disrupted DNS functionality, leading to loss of access to network shares. Until WD releases an official fix, mapping shares via IP and staying informed through the user community are the best short-term options. If this bug impacts your workflow significantly, reaching out to official WD support is recommended.