Web App Readiness Test

A free readiness diagnostic for vendor web apps. Checks the browser configuration and policy settings that block Microsoft 365, ticketing, chat, and other SaaS apps even on a modern, up-to-date browser: whether popups can open, cookies and site storage work, notifications are available, and the clipboard is accessible. Use it before rolling out a vendor app, or when an app misbehaves on one workstation but works on another.

Read the Web App Readiness Test guide for help reading the verdict or fixing each restriction.

Privacy: Every check is a local capability probe in this browser tab. No data leaves the machine, and no permission prompts are triggered (notification and clipboard permission are read, never requested). View source to verify.

Configuration

Driver: Browser capability probes

Takes about 5 seconds. Runs entirely client-side; no requests leave your browser, and no permission prompts appear.

Status Check Step

Pending

Popups are allowed

Opens a tiny about:blank popup inside the click gesture. Vendor sign-in flows often open a popup window.

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Pending

Cookies and site storage work

Round-trips a first-party cookie, localStorage, and sessionStorage, plus a third-party-cookie capability signal.

2 of 4

Pending

Desktop notifications are available

Reports Notification support and permission. Does not prompt.

3 of 4

Pending

Clipboard access works

Feature-detects navigator.clipboard write/read and the execCommand fallback. Does not read the clipboard.

4 of 4