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Frequently Asked Questions

Who can access Lightbend Academy?

Lightbend Academy is available to everyone. However, some content is only available to Lightbend Subscribers. See below for more details.

How do I access Lightbend Academy?

Lightbend Subscribers

If you are an existing Lightbend Subscriber, and you wish to access the Lightbend Academy, you will use your company's unique registration link. This link can be obtained by anyone who has access to the Lightbend Portal. It can be freely shared within your company.

You can find your unique registration link here:

Note: To ensure uninterrupted access to the Lightbend Academy, please use your corporate email address when registering.

Everyone Else

If you are not a Lightbend Subscriber, you can register for Lightbend Academy here.

Can I invite others to Lightbend Academy?

If you are a corporate subscriber, you can invite others within your company by sharing your corporate registration link. Depending on the size of your subscription, a number of seats will be available for use.

If you are concerned about exceeding your limits, please speak to your Lightbend sales representative.

Anyone can be freely invited to access the free content.

How do I access Premium Courses?

Premium courses are currently only available to Lightbend Subscribers.

Note: The Lightbend Subscription is for corporate use only. We currently do not offer subscriptions to individuals.

How do I access Instructor-Led Courses?

If you are interested in an Instructor-Led course, please contact us to arrange a booking.

Note: Instructor-Led courses are currently only available to corporate groups of 5-12 people. We currently do not offer Instructor-Led courses to individuals.

I have taken similar courses on another platform, are the certificates and badges transferrable to Lightbend Academy?

The Lightbend Academy courses have their own grades, badges, and certificates and are non-transferrable.

Once I have registered, which course should I start with?

If you are unsure which course to start with, we recommend you start with our Getting Started course which will help to guide you on your journey.

Where can I find my Lightbend commercial credentials?

You can access your commercial credentials by going to:

Please ensure you read the instructions in detail to ensure your project is correctly configured.

Where can I download the slides?

At this time we do not offer a way to download the slides.

Can I retake a course to improve my grade and receive a course certificate or badge?

We currently only allow a single attempt at each course. However, we offer retries on many questions, and long time limits. Our courses are intended to be forgiving.

Please do your best on each course to ensure you can receive your course certificate and badge as grades are final.

Why does my dashboard indicate progress in some courses but not in others?

The dashboard shows progress exclusively for courses that include quizzes, exams and certificates. Progress is not tracked for courses that do not include quizzes, exams and certificates, therefore even though you may have completed the course, the dashboard will still indicate that the course can be resumed.


I am seeing an error "Unable to create account"

This usually means that you already have an account on and you are trying to create a new account using the same email address.

You can usually resolve this issue by logging into the existing account at

If you have forgotten your password, then you can use the "Forgot Password" option when you try to login.

I didn't receive my verification email or I didn't receive my badge email.

In most cases, this is likely because the email has been caught by your spam/junk filter. Double check your spam/junk folder.

I am seeing a 500 error after verifying my email.

There are various reasons why this may occur, such as trying to verify your email twice. If you see this error, try logging in to If you continue to experience issues, please contact us.

I am seeing an error that says: "This site requires a paid Lightbend subscription"

If you see this error, it usually indicates that you have tried to sign into, rather than Simply visit and sign in there instead (using the same credentials).

If you see this error while trying to access your Lightbend Credentials, you should be able to find a link to the credentials on the page. Otherwise, visit to obtain your credentials.

When I try to enroll in a course, I see the following error: You do not have permission to access this course.

There are two main causes for this:

  • Your account is not linked to a corporate subscription.
  • Your session data is invalid/out of date

If you registered for Lightbend Academy without using a corporate specific registration link, you will only have access to the free content.

If you meant to register using a corporate specific link, try logging in and then following the corporate registration link. This should link your account.

If you have followed the instructions above, and are still experiencing issues, it may be a problem with your stored session data. Try logging out of Lightbend Academy, and then logging back in.

If you are a corporate subscriber, and you are still having problems accessing premium content, please contact us.

I am getting "Cinnamon" errors while trying to compile and/or run tests.

These errors will show up something like the following:

	[error] sbt.librarymanagement.ResolveException: unresolved dependency: com.lightbend.akka#akka-diagnostics_2.13;1.1.12: not found
	[error] unresolved dependency: com.lightbend.cinnamon#cinnamon-akka_2.13;2.13.1: not found
	[error] unresolved dependency: com.lightbend.cinnamon#cinnamon-jvm-metrics-producer;2.13.1: not found
	[error] unresolved dependency: com.lightbend.cinnamon#cinnamon-prometheus;2.13.1: not found
	[error] unresolved dependency: com.lightbend.cinnamon#cinnamon-prometheus-httpserver;2.13.1: not found

When this happens, it usually means that you have not setup your commercial credentials. There should be instructions in the course that explain how to setup your credentials, including a video demonstration.

You can also refer to the section above entitled: "Where can I find my Lightbend commercial credentials?"

I previously completed a course, but my progress isn't showing and/or I can't obtain a certificate.

In some cases, we have taken courses that previously only had a self-declaration (Level 1) badge, and upgraded them. In doing so we added additional content, including quizzes and exams.

To obtain the certificate and Level 2 badges, you will need to complete the quizzes and exams.