The short answer
An up-to-date Chrome, Edge, Firefox or Safari, on a computer, tablet or phone. Keep cookies switched on so you stay signed in.
What works
4 browsers
Chrome, Edge, Firefox, Safari
Any device
Phone, tablet or computer
200% zoom
The site still works
Use an up-to-date version of Chrome, Edge, Firefox or Safari. The site is built for phones first and works on tablets and computers, with zoom up to 200% and with a keyboard.
For the best experience:
- keep cookies switched on, or you are signed out (see What cookies do you use?)
- if something looks broken, reload the page, then try another browser
- update your browser and your phone's software if they are very old
- private or incognito windows work, but you may be signed out when you close them
The 3D Lab needs a browser that offers WebGL: see The 3D Lab says it needs WebGL.
The accessibility statement explains how we make the site usable for everyone.
Updated 22 October 2026
Related questions
- Can I learn on my phone?Yes. Lessons, notes, quizzes, your portal and the checkout all work on a phone. Course software such as TIA Portal installs on a Windows computer, so do those practical steps there.
- A video will not playIf the player keeps loading, your network is probably blocking YouTube: try another network or your phone's data. If the player shows an error, use Open it on YouTube.
- I cannot sign inCheck you have confirmed your email, that the address is right, and reset your password if you are not sure of it. After too many wrong tries, wait a little or reset your password.
- What cookies do you use?Essential cookies keep you signed in and remember your choices. Analytics runs only if you accept it. Change your choice any time with Cookie settings at the foot of every page.
- Our emails are going to spamSearch your spam, junk and promotions folders for EDWartens and mark our email as Not spam. Adding the sender to your contacts helps.
- A page will not load, or the site is slowReload, try another network or browser, and switch off extensions. If it still fails, send us the page address, what you saw, your device and browser, and a screenshot.
Still need help? Visit the Help Centre or send us a request.
Still stuck?
Ask the AI assistant. If it cannot solve it, a person takes over and replies by email, usually within one working day.