How to Install Attendant Pro Silently with winget on Windows

If you're scripting a Windows machine setup, Attendant Pro is one of those apps you want installed silently — no installer wizard, no progress dialogs, no "Next, Next, Finish". Here's how with winget.

The one-line answer

Open Terminal as Administrator and run:

winget install --id Landis.AttendantPro -e --silent --accept-package-agreements --accept-source-agreements

Attendant Pro: The Attendant Console for Skype for Business.

Typical install time: 10–60 seconds depending on installer size.

What gets installed

Field	Value
Package ID	`Landis.AttendantPro`
Publisher	Landis Technologies LLC
Installer type	Windows Installer (MSI)
License	Proprietary
Latest version	1.0.7394.19963
Minimum OS	Windows 10+
Homepage	landistechnologies.com

MSI installers accept /quiet (no UI) and /norestart (skip reboot). winget passes both automatically with --silent.

Per-user install (no admin)

If you don't have admin rights, try per-user scope:

winget install --id Landis.AttendantPro -e --scope user --silent

If the manifest doesn't have a user-scope installer, winget falls back with an error — in that case you genuinely need admin or use the Access denied fix.

Specify a version

To pin a known-good version (useful for reproducible CI / team standardisation):

winget install --id Landis.AttendantPro -e --version 1.0.7394.19963 --silent

List available versions:

winget show --id Landis.AttendantPro --versions

Override silent flags

If winget's --silent doesn't fully suppress the installer's UI, pass native flags via --override:

winget install --id Landis.AttendantPro -e --override "/quiet /norestart"

These are the Windows Installer (MSI)-native silent switches the installer recognises.

Verify after install

winget list --id Landis.AttendantPro

If the version is shown, the install succeeded.

Upgrade silently

winget upgrade --id Landis.AttendantPro -e --silent --accept-package-agreements --accept-source-agreements

Or upgrade as part of a bulk weekly cron — see How to update all Windows apps.

Uninstall silently

winget uninstall --id Landis.AttendantPro --silent --disable-interactivity

Detailed guide: How to uninstall Windows apps with winget.

In a provisioning script

PowerShell snippet for unattended Windows setup:

$apps = @(
  "Landis.AttendantPro"
  # add more packages here
)

foreach ($id in $apps) {
  winget install --id $id -e --silent `
    --accept-package-agreements --accept-source-agreements
}

Wrap in Task Scheduler for one-shot machine provisioning. See Fresh Windows 11 setup.

Common errors

"Attendant Pro is already installed" — winget detected the existing install. To force-reinstall over the existing copy:

winget install --id Landis.AttendantPro -e --silent --force

"Installer hash does not match" — Landis Technologies LLC published a new version before the winget manifest updated. Wait ~24 hours or pass --force. See hash mismatch fix.

"Access denied" / 0x80070005 — run Terminal as Administrator. See Access denied fix.

0x80073D02 — package in use — Attendant Pro is currently running. Close it then retry. See package in use fix.