# Fix Prior when it will not open

> Prior shows a blank window, closes at once, stays on the loading screen or says Something went wrong. Checks for the web, desktop and Android, in order.

Source: https://priortasks.com/docs/troubleshooting/app-will-not-open/
Last updated: 2026-11-05

Your tasks are saved in your account, so an app that will not open does not mean your data is gone. Start with the web app, which tells you whether the problem is the account or the app.

## First: does the web app work?

Open [app.priortasks.com](https://app.priortasks.com/today) in a browser and sign in with the same account.

- **It works.** Your account and data are fine and the problem is the app on that device. Continue below.
- **It does not work either.** Try another browser or a private window to rule out an extension, then see [I cannot sign in](https://priortasks.com/docs/troubleshooting/sign-in-problems/) if the sign-in fails.

## On the web

- A screen saying **Prior was updated** ("A new version is ready. Reload to continue, nothing you wrote is lost.") is normal after a release: choose **Reload**.
- **Something went wrong** ("This page could not be shown. Reload to continue.") also offers **Reload**. If it comes back, try a private window and another browser. If it works there, the likely cause is an extension or the stored data of the first browser.
- A loading screen that does not end can come from a blocked or very slow connection to app.priortasks.com or api.priortasks.com. Try another network.
- Clearing a browser's site data is the last resort. Any change still waiting to sync in that browser is lost with it: see [Fix sync problems](https://priortasks.com/docs/troubleshooting/sync-problems/).

## On desktop (Windows, macOS, Linux)

1. Quit Prior completely, including from the tray or the dock, then open it again.
2. Restart your computer and open Prior.
3. Install the newest version from the [releases page](https://github.com/gh-Constant/prior/releases/latest) over the current one. The newest version may already fix the problem. See [Update Prior](https://priortasks.com/docs/troubleshooting/update-the-app/).
4. If it still closes at once, uninstall Prior and install it again.

Reinstalling does not remove your account data. Your synced data comes back when you sign in. A change you made offline and never synced exists only on that computer, and uninstalling removes it, so first try to open the web app and compare.

On macOS, download Prior only from the releases page or the website. Builds published there are signed and notarized by Apple, so macOS should open them without an "unidentified developer" warning. If you see one, delete the file and download it again.

## On Android

1. Close Prior from the recent apps and open it again.
2. Update it: **Update now** from Google Play, or install the newest APK from the releases page. If the screen says **Prior needs an update**, that is the cause. See [Update Prior](https://priortasks.com/docs/troubleshooting/update-the-app/).
3. Restart the phone.
4. As a last resort, uninstall and reinstall Prior. Changes never synced are removed with it.

## When to write to support

If none of this helps, write to contact@priortasks.com with your system and version (for example "macOS 15" or "Android 14"), the Prior version if you know it, whether the web app works with the same account, and what you see: a blank window, a closing window or an error message. See [Report a problem](https://priortasks.com/docs/troubleshooting/get-help/).