Install on Windows
Download and install Tejus on Windows, get past the SmartScreen warning, keep Tejus updated, uninstall it, and find where your data lives.
Tejus is available for Windows (64-bit, x64). macOS and Linux builds are not available yet.
Requirements
- Windows 10 or Windows 11, 64-bit.
- Git on your
PATH(for example Git for Windows) for branches, worktrees, diffs, checkpoints and Source Control. Tejus opens folders without Git, but those features need a repository. - At least one way to run an agent:
- the built-in Tejus agent, with a Google sign-in for free Tejus Cloud tokens or your own API key, with nothing else to install; or
- a coding-agent CLI you already use, such as Claude Code or Codex (see Provider guides).
Download and install
Download the installer
Download tejus-setup.exe from tejusai.com or the download page. Use only this official address; don't install Tejus from mirrors.
Run it
Open tejus-setup.exe. The installer is one-click: it installs Tejus for your Windows user account (no administrator prompt) and starts Tejus when it finishes.
If Windows SmartScreen warns you
The installer is signed with Prasanvi's EV code-signing certificate, so Windows names the publisher as PRASANVI CYBER SECURITY SOLUTIONS PRIVATE LIMITED. A new release can still show "Windows protected your PC" for a short while, until SmartScreen has seen enough downloads of it. Click More info, check that the publisher is Prasanvi and the file is tejus-setup.exe from tejusai.com, then click Run anyway.
Finish the welcome tour
On first launch Tejus opens a short welcome tour: a feature overview, your Tejus account (optional; this is also where you can opt in to anonymous usage analytics), the agents you want to use, a theme, and your first project. You can skip the optional steps and change everything later in Settings.
Installing Tejus 1.0 over an old 0.9.x install removes the old app automatically. Your old 0.9 data folders stay where they were. The retired "Open with Tejus IDE" Explorer entries are removed; the IDE is now the Editor view inside the app.
Updates
Tejus updates itself from Tejus's own update service:
- It checks about 15 seconds after it starts, every 6 hours while it runs, and when you come back to the window after a while.
- When a new version is available, Tejus downloads it in the background. The update button in the sidebar shows the progress (Preparing update …%), and the notification bell shows Tejus version is available with the release notes.
- When the download is ready, click Install & restart in the bell, or click the sidebar update button (Update … is ready. Click to restart and install.). Tejus restarts into the new version.
- Tejus never installs an update silently when you quit, and never downgrades.
- To check right away, open the Editor view and choose Help → Check for Updates... in its menu bar. (The sidebar update button only appears while an update is being prepared or is ready.)
If an update can't be installed, download the latest tejus-setup.exe and run it over the existing installation. Your data is kept. See Desktop app & updates for update errors.
Where your data lives
| What | Where |
|---|---|
Tejus database (state.sqlite), settings.json, keybindings.json | %USERPROFILE%\.tejus\userdata |
Logs (server.log, desktop-main.log, server-child.log, provider\, terminals\) | %USERPROFILE%\.tejus\userdata\logs |
| Managed Git worktrees | %USERPROFILE%\.tejus\worktrees |
| App profile (in-app browser data and caches) | %APPDATA%\tejus |
| Chats started without a project | %USERPROFILE%\Documents\Tejus |
| Your own API keys for the Tejus agent | Windows Credential Manager (tron-ai) |
Your repositories stay where they are; Tejus doesn't copy them.
To keep Tejus's data somewhere else, set the user environment variable SYNARA_HOME to the folder you want, then restart Tejus. (The variable keeps the name of the code base Tejus is built on.) Tejus doesn't move existing data for you.
Uninstall
- Quit Tejus.
- Open Windows Settings → Apps → Installed apps, find Tejus, and choose Uninstall.
Uninstalling removes the app but keeps your data, so a later reinstall picks up where you left off. To remove everything, also delete %USERPROFILE%\.tejus and %APPDATA%\tejus after uninstalling, and remove the tron-ai entries in Credential Manager → Windows Credentials if you saved API keys.
%USERPROFILE%\.tejus holds your chats, settings and managed worktrees. Commit or copy anything
you need from worktrees before deleting it.
Next
Continue with the Quickstart, or set up Tejus Cloud and your providers first.