What Does Wyze Error Code 90 Mean and How Do I Fix Authentication Failed?
- Wyze account password recently changed and device tokens are stale
- Two-factor authentication enabled requiring re-authentication of all devices
- Wyze authentication server experiencing temporary issues
Problem Description
Your Wyze device shows Error Code 90 which means authentication failed. The device cannot verify its identity with Wyze servers or your account credentials are not being accepted. Error 90 is an account and cloud authentication issue not a local connectivity problem. The device may be connected to WiFi but cannot establish a secure session with Wyze cloud services. This commonly occurs after changing your Wyze account password, enabling two-factor authentication, or when Wyze authentication servers have issues.
Symptoms
- Wyze app shows Error Code 90 authentication failed on one or more devices
- Error appeared after changing Wyze account password
- Error appeared after enabling two-factor authentication
- All devices show error 90 simultaneously suggesting account-level issue
- Logging out and back into the app temporarily fixes the error
- Error 90 appears after Wyze app update
Recognize these? Here's what usually causes it.
Common Causes
- Wyze account password recently changed and device tokens are stale
- Two-factor authentication enabled requiring re-authentication of all devices
- Wyze authentication server experiencing temporary issues
- Wyze app session token expired after long period without opening the app
- Account flagged for suspicious activity requiring re-verification
- Third-party app integration like Home Assistant or Alexa using expired API token
Most fixes happen in the first 3 steps.
If error 90 only affects one device while others work fine the specific device may need to be removed from your account and re-added. In the Wyze app tap the device then gear icon then Delete Device. Then add it back through the plus icon. This re-registers the device with fresh authentication credentials.
Step-by-Step Solution
Log Out and Log Back In
Open the Wyze app. Tap Account tab at the bottom. Scroll down and tap Sign Out. Confirm sign out. Wait 10 seconds. Open the app and sign in with your current email and password. If you have two-factor authentication enabled complete the verification code step. After logging in all your devices should re-authenticate with fresh tokens and error 90 should clear within 1 to 2 minutes.
Clear App Cache
On Android go to Settings then Apps then Wyze then Storage then Clear Cache. On iPhone delete the Wyze app and reinstall from the App Store. Stale cached authentication tokens persist even after logging out and can cause error 90 to return. After clearing cache log in fresh and verify all devices connect.
Re-link Third-Party Integrations
If you changed your Wyze password any third-party integrations like Amazon Alexa, Google Home, or Home Assistant that use your Wyze credentials will have stale tokens showing error 90. In the Alexa app disable and re-enable the Wyze skill. In Google Home remove and re-add the Wyze integration. In Home Assistant update the Wyze credentials in your configuration. Each integration needs to authenticate with the new password.
Check for Account Security Issues
Go to wyze.com and log into your account. Check for any security notifications or account restrictions. If Wyze detected unauthorized access they may have temporarily restricted your account. Follow any prompts to verify your identity, change your password, and re-enable access. If your account appears locked contact Wyze support at support.wyze.com.
Power Cycle Affected Devices
After re-authenticating in the app if specific devices still show error 90 power cycle them individually. Unplug each device for 10 seconds and plug back in. The device will reconnect to WiFi and re-authenticate with Wyze servers using the fresh session from your app. This forces the device to request new authentication tokens rather than using cached ones.
Quick Solutions
Still having issues? This is usually the deeper cause below.
If the keypad rejects valid codes, a lockout timer may be running — five failed entries locks most keypads silently for 5–10 minutes.
After resolving error 90 enable two-factor authentication on your Wyze account if you have not already. Go to Account then Security then Two-Factor Authentication. This adds an extra layer of security and prevents unauthorized access that could trigger future account lockouts.
This issue almost always looks more complex than it is — the majority of cases trace back to a single setting, a stale credential, or a default that shipped wrong.
- Wyze account password recently changed and device tokens are
- Two-factor authentication enabled requiring re-authentication of all devices
- Wyze authentication server experiencing temporary issues
- Wyze app session token expired
- Account flagged for suspicious activity requiring re-verification
Before you go — try one of these (they fix most cases).
Official Manufacturer Manual
If you need the complete manufacturer documentation for advanced setup, wiring diagrams, or detailed specifications, you can download the official manual below. The manual includes full technical instructions directly from the manufacturer and may help if your issue requires deeper troubleshooting.
Download the Official Wyze Smart Devices ManualSource: wyze.com
Need More Help? Wyze Support
Note: The contact information below connects you directly to Wyze's official customer support team, not Trunetto. They can help with warranty claims, device replacements, and advanced technical issues.
How Does Wyze Compare?
Before replacing your Wyze device, see how it stacks up against alternatives in our full comparison guides.
