Troubleshooting

The firewall question during installation

The installer asks Windows to check the helper before you first pair. Windows shows a Windows Security window: "Do you want to allow public and private networks to access this app?", naming dynebridge-host.

Leave the checkboxes as they are and click Allow. Windows ticks the box for the kind of network you're on now, which is the one your phone uses. Unticking it, or picking the other kind, leaves your phone blocked.

I clicked Cancel on the firewall question

Cancel tells Windows to block the helper. DyneBridge still shows Ready and a QR code, but the phone can never connect, and Windows won't ask again. Undoing it needs an administrator account.

First, find your network type. Open Settings → Network & internet, click your Wi-Fi network's Properties, and look at Network profile type: Public or Private. Or, in PowerShell:

Get-NetConnectionProfile | Select-Object Name, NetworkCategory

Fix it in Windows Security:

1. Open Windows Security → Firewall & network protection → Allow an app through firewall.
2. Click Change settings (this needs an administrator).
3. Find dynebridge-host.exe in the list. There may be two entries; do this for each.
4. Tick the box for your network type from above (Public or Private). Also tick the checkbox at the start of the line if it's empty.
5. Click OK, then reopen the DyneBridge popup and scan the new QR code.

Or reset it in PowerShell. Run PowerShell as administrator, then:

# See what Windows has recorded for the helper
Get-NetFirewallApplicationFilter |
  Where-Object Program -like '*\DynePass\DyneBridge\dynebridge-host.exe' |
  Get-NetFirewallRule | Select-Object DisplayName, Action, Profile, Enabled

# Remove the Block rules
Get-NetFirewallApplicationFilter |
  Where-Object Program -like '*\DynePass\DyneBridge\dynebridge-host.exe' |
  Get-NetFirewallRule | Where-Object Action -eq Block | Remove-NetFirewallRule

Then reopen the DyneBridge popup. Windows asks the firewall question again: leave the checkboxes as they are and click Allow.

Uninstalling leaves the firewall rules behind

Uninstalling the helper from Settings → Apps removes its files and its registration with Chrome and Firefox. It can't remove the firewall rules Windows made when you clicked Allow or Cancel, because that needs an administrator. The rules are harmless without the helper. To remove them, run the PowerShell commands above as administrator, without the Where-Object Action -eq Block step.

"Windows protected your PC"

The installer isn't code-signed yet, so Microsoft Defender SmartScreen may warn about it. If you downloaded it from the DynePass website, click More info, then Run anyway.

More than one Windows user

The helper is installed for one Windows user at a time. Each user who wants DyneBridge runs the installer while signed in, and answers the firewall question once.

The "Allow Firefox to start WebExtension backend?" question

On Ubuntu 26.04, Firefox has to ask Ubuntu before it can start the DyneBridge helper. The first time you open the DyneBridge popup in Firefox, Ubuntu 26.04 asks "Allow Firefox to start WebExtension backend?", naming the DyneBridge helper (com.dynepass.dynebridge).

Click Allow. Ubuntu 26.04 remembers your answer, so it only asks once.

Clicking Don't allow, or closing the question with Esc, blocks the helper. Ubuntu 26.04 remembers that answer too: the DyneBridge popup then shows Helper missing every time, and Ubuntu 26.04 doesn't ask again. Reinstalling the helper doesn't change this, and Ubuntu 26.04's settings have no option for it.

I clicked Don't allow (or closed the question)

Either of these works on Ubuntu 26.04.

In a terminal. Open Terminal and run:

gdbus call --session --dest org.freedesktop.impl.portal.PermissionStore --object-path /org/freedesktop/impl/portal/PermissionStore --method org.freedesktop.impl.portal.PermissionStore.DeletePermission webextensions com.dynepass.dynebridge snap.firefox

It prints (). Close and reopen the DyneBridge popup: Ubuntu asks again. Click Allow.

Without a terminal.

1. Open Files, go to your Home folder, and press Ctrl+H to show hidden folders.
2. Open .local → share → flatpak → db, and delete the file webextensions.
3. Log out, then log back in.
4. Open Firefox and the DyneBridge popup: Ubuntu asks again. Click Allow.

That file holds Ubuntu's answers for every Firefox add-on that starts a program on your computer, such as other password managers, so Ubuntu may ask again for those too. The terminal command resets only DyneBridge.