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Before you can sign in to Real-Time LCA, you need to activate the user that was created for you. Activation links you to an authentication method — either a Real-Time LCA password or your Microsoft 365 account — and confirms your identity. If your organization uses single sign-on, none of this applies to you — your user is created the first time you sign in through your identity provider, so there is no activation email to wait for.

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Before you start

You need:
  • An activation email from support@realtimelca.com with the subject Activate your Real-Time LCA user.
  • Access to the inbox the email was sent to.
If you cannot find the email, check your spam folder. If it still does not appear, reach out to support@realtimelca.com and we will resend the invite.

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Step 1: Open the activation email

Open the Activate your Real-Time LCA user email and click Activate your user. If the button does not work, copy the link below it and paste it into your browser.
Activation email showing the Activate your user button and a fallback activation link.

Activation email from support@realtimelca.com

The activation link is single-use and time-limited. If it expires before you activate, contact support to receive a new invite.

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Step 2: Choose how to activate

The activation link takes you to Activate your account. You can either set a Real-Time LCA password or activate with your Microsoft account.
Activate your account form with empty New password and Confirm new password fields, the password requirement chips greyed out, and a Microsoft option below.

Empty activation form

  1. Enter a password in New password.
  2. Re-enter the same password in Confirm new password.
  3. Click Activate.
By activating, you agree to the Terms and Privacy Policy linked at the bottom of the form.

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Step 3: Meet the password requirements

As you type, each requirement turns green when satisfied. Your password must contain:
  • At least 8 characters
  • At least 1 number
  • At least 1 special character
  • At least 1 lowercase letter
  • At least 1 capital letter
  • No 3 or more recurring characters
Activation form with a password entered and every requirement chip turned green.

Password requirements update as you type

The Activate button stays disabled until every requirement is met and the two password fields match.

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Step 4: Confirm activation

When activation succeeds you see a confirmation screen, and the browser redirects to the Real-Time LCA app shortly after.
Successfully activated confirmation screen with a green checkmark and a note that you will be redirected to the application shortly.

Account successfully activated

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Step 5: Sign in

From then on you sign in at the Real-Time LCA sign-in page, with either your password or your Microsoft account.
Real-Time LCA sign-in page with email and password fields, a forgot password link, and a Microsoft sign-in option.

The sign-in page

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Connecting a design tool later

If you plan to publish geometry from Revit, ArchiCAD, Rhino, or Grasshopper, you also need a Speckle account. It is not created for you at activation — you create it yourself from Account menu → Speckle, choosing the password you will use in the connector. See Speckle for that setup and how the pieces fit together.

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Next steps

Create your first project

Start the project wizard and run your first calculation.

Connect a design tool via Speckle

Create your Speckle account, then install the connector and publish a model.