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3. Account and license

3.1. Signing in through the browser

  1. Choose Account → Sign in to your account or press Sign in on the sign-in screen.
  2. The browser opens with the account page. In the program, an "Account sign-in" window appears with the text "Finish signing in in your browser. This window will close by itself" and a Cancel button. The program waits up to 5 minutes and does not "freeze".
  3. Finish signing in in the browser and return to TCEPro — the window closes and the catalog list is fetched in the background.

If you do not have an account yet — the Create an account button on the sign-in screen opens registration on the account page.

After signing in, the Account menu shows your email address and gains a Sign out item.

3.2. The sign-in screen and its states

Until the session is confirmed, the sign-in screen is shown instead of the working window. Its title explains what is going on:

TitleWhat it meansButtons
Sign in to your accountYou are not signed inSign in · Create an account
Checking your sign-inThe program is checking whether your sign-in is still valid—
A licence is neededThere is an account but no licenseOpen my account
Waiting for confirmationThe license request has been sent—
This device is not licensedThere is no slot on the license for this computerRequest a slot for this device
Access revokedAccess to the program has been withdrawn; contact support—
The session has expiredYou need to sign in againSign in
The server is unavailableThere is no connection and the offline period is overRetry

Every locked screen has a Sign out button — this lets you switch accounts without deleting anything by hand.

If, while you are working, the server reports that the session is no longer valid, the working window closes and the sign-in screen explains why: "Sign in again", "The licence has expired. Renew it on your account page and sign in again", "The licence is not active. Get one on your account page", "This account was signed in on another computer. Sign in again", "Every slot on the licence is taken. Request one for this computer", "Too many requests. Try again in a minute", "The licence is damaged. Contact support". If the server returned an unfamiliar status, the text is "The license is not active: the server reported status "…". Check your license in your account".

License slots. Every license allows a limited number of computers. A new computer takes a free slot; if there are none, the program offers to request one on the account page.

3.3. Working offline

The program confirms the license in the background roughly every 15 minutes and works without a connection for up to 24 hours from the last server response. The interface is not blocked meanwhile.

SituationWhat works
No connection, less than 24 hours since the last server responseEverything already downloaded: opening firmware, editing, saving projects, exporting. The status bar shows "Server unavailable. Offline work is available for another N h."
No connection, 24 hours have passedThe text "The offline period is over. Connect to the internet to carry on working" is shown. Catalog files are not deleted — after signing in everything comes back

Without a network you cannot: download or update a catalog, see the purchase list, copy the details for a support request (the request code is issued by the server — the buttons are grayed out), or find out whether the open unit exists in a catalog you have no access to (the program says "access could not be checked", not "not supported").

Details worth knowing:

  • when the connection drops, the program tries to reach the server once a minute;
  • turning the system clock back by more than 15 minutes ends offline work until the server responds;
  • a refusal from the server (license revoked, session invalid) locks the program immediately; a mere unavailability of the server does not.

3.4. If catalogs no longer open on this computer

After a Windows reinstallation, a system restore or a profile moved over from another machine, the service treats your computer as a new one. Catalogs downloaded earlier no longer open on it, and the program shows the "The catalogues on this computer no longer open" screen; in the "Map catalogues" window such catalogs get the Setup needed status.

What is happening and what to do:

  • the computer has to be registered again, and that needs a free slot on the license;
  • only support can free a taken slot, no more than twice a year per license;
  • the Contact support button copies a ready-made request with the computer code — paste it into your request on the website;
  • downloading the catalogs again is pointless until the slot is freed: the files are neither changed nor damaged;
  • signing out in this state fixes nothing — it only deletes the downloaded catalogs (the program warns you).

Projects, saved firmware files and the license are not affected.


Updated November 14, 2026 · for TCEPro 0.40.0