What Does Sonos Error 36 Mean and How Do I Fix Update Did Not Complete?
- Target product reboot required
- Product did not rejoin mesh in time
- Update completion handshake interrupted
Problem Description
Sonos Error 36 indicates one or more products did not finish the update process. The app shows which products are affected. In many homes this is resolved by rebooting only those units and retrying update once all devices are visible again.
Symptoms
- Error 36 appears near end of update
- Specific Sonos rooms are flagged
- Some products updated but others did not
- Failed products disappear temporarily
- Retry fails until devices fully return
- System state is mixed after update attempt
Recognize these? Here's what usually causes it.
Common Causes
- Target product reboot required
- Product did not rejoin mesh in time
- Update completion handshake interrupted
- Power fluctuation during install stage
- Network state changed mid-update
- App retried before products fully online
Most fixes happen in the first 3 steps.
Do not start repeated updates back to back before products finish rejoining the app because this often recreates the same completion failure.
Tools & Requirements
Step-by-Step Solution
Capture which products failed
From the error screen, note exactly which rooms report Error 36. This keeps troubleshooting focused. Mixed update outcomes are common and do not mean your whole Sonos system is corrupted or needs full reset.
Reboot affected products first
Power cycle only the products listed in Error 36 and wait for each to fully return in the Sonos app. Updating before devices are fully visible often causes repeat failures because completion checks cannot confirm product state.
Stabilize network and controller app
Close extra Sonos controllers and use one device to run the retry. Keep Wi-Fi stable and avoid heavy network load while update finalization runs. Completion stage failures are often timing-sensitive, especially on larger systems.
Retry update after full room visibility
Once all rooms appear and respond normally, run update again. Watch for any product that drops offline during finalization. If the same room repeatedly fails, focus on that room network quality or power stability.
Verify all products match version
After update, confirm every product reports the same software version. Mixed versions can cause grouping and control inconsistencies. If one product remains behind, repeat targeted reboot and update for only that device.
Quick Solutions
Still having issues? This is usually the deeper cause below.
If the device became unresponsive after a firmware update, a factory reset usually clears the corrupted state — the update itself is rarely the root cause.
Error 36 usually clears with targeted reboot and clean retry once every room is visible again.
Range tests in open air are useless for predicting real-world Z-Wave performance — a single concrete wall or appliance can cut effective range by more than half.
- Target product reboot required
- Product did not rejoin mesh in time
- Update completion handshake interrupted
- Power fluctuation during install stage
- Network state changed mid-update
Before you go — try one of these (they fix most cases).
Official Manufacturer Manual
Sonos provides official product documentation through their online manual rather than downloadable PDF. Access setup guides, troubleshooting steps, and product specifications for your Sonos Update Completion.
Source: sonos.com
Need More Help? Sonos Support
Note: The contact information below connects you directly to Sonos's official customer support team, not Trunetto. They can help with warranty claims, device replacements, and advanced technical issues.
