Sometimes when printing labels in AccelerList, you may see a popup that says:
“AccelerList wants to connect to QZ Tray – Cannot verify trust (Future Certificate)”
This happens when your computer cannot validate the QZ Tray security certificate. The most common causes are an incorrect system clock, QZ Tray running in the background, or corrupted certificates.
Follow the steps below to fix it.
Step 1 — Check Your Computer Date & Time (Most Important)
If your computer clock is incorrect, QZ Tray certificates will fail and the popup will keep appearing.
Windows
Click Start
Search Date & Time Settings
Turn ON:
Set time automatically
Set time zone automatically
Confirm the correct time and timezone
Restart your computer
Mac
Click the Apple Menu
Open System Settings
Go to General → Date & Time
Turn ON:
Set date and time automatically
Set time zone automatically
Restart your Mac
After restarting:
Open QZ Tray
Open AccelerList
Try printing again.
If the popup still appears, continue to Step 2.
Step 2 — Fully Restart QZ Tray
Sometimes QZ Tray continues running in the background even if the window is closed.
Windows
Look at the bottom-right system tray near the clock
Click the ^ arrow to show hidden icons
Find the QZ Tray icon
Right-click → Exit
Mac
Look at the top menu bar
Click the QZ Tray icon
Select Quit QZ Tray
Then:
Wait 10 seconds
Reopen QZ Tray
Refresh or reopen AccelerList
Try printing again.
If the popup still appears, continue to Step 3.
Step 3 — Clear QZ Tray Certificates
Old or corrupted certificates can cause the trust warning to appear repeatedly.
To reset them:
Right-click the QZ Tray icon
Click About
Open Advanced or SSL Certificates
Click:
Clear Certificates
Remove Saved Certificates
or Reset Certificates
Close QZ Tray
Reopen QZ Tray
Reload AccelerList
When the popup appears again, click Allow or Trust.
Final Check
Before printing again, confirm:
✔ Computer date and time are correct
✔ QZ Tray has been restarted
✔ Certificates have been cleared
✔ Browser or AccelerList page refreshed
Now try printing again.
If the Popup Still Appears
Please contact AccelerList support and include:
Your Operating System (Windows or Mac)
Your Browser (Chrome, Edge, Safari, etc.)
Your QZ Tray version
A screenshot of the popup
A screenshot of the QZ Tray About window
This will help us diagnose the issue quickly.