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If you press Present and nothing happens for your audience, or people say they can’t join with the access code or QR code, it’s almost always one of a handful of causes. Work through the checks below in order — each one takes a few seconds and fixes the most common reasons a session won’t start.
Participants can only join and interact when a presentation is in public mode. If it’s still in private mode — the setting you use while editing — the join link won’t open for anyone.Click the Share icon in the top-right corner of the editor, open Visibility, and choose Public. Private mode is available on every plan, so this is never a plan restriction. See Turning on private mode for your presentation.
In the default host-led setup, participants can only join while you are actually presenting. If you’re still on the edit screen, or you’ve shared the link before pressing Present, the session isn’t open yet.Press Present first, then share the link or QR code. For a quiz, participants also need you to be on a quiz slide — a host-led quiz isn’t “open” before you press Present or while a non-quiz slide is on screen. See How to Make and Run a Quiz and Quiz troubleshooting and FAQs.If you’d rather let people join and answer at any time without a host, switch to self-paced mode — open the Settings tab, click Who takes the lead, and choose Audience (self-paced). See Setting up a self-paced presentation on AhaSlides.
If AhaSlides won’t load at all — for you or for your participants — the block is usually coming from a company, organisation or school network, or from an internet service provider.Ask whoever manages the network to whitelist AhaSlides, and check the participants’ own connection is stable. The full list of ports and domains to allow is in Using AhaSlides on a restricted network.
If you’ve deliberately turned on audience verification or authentication — for example, to restrict a presentation to specific people — participants are asked to verify before they can join. Anyone who isn’t allowed, or hasn’t completed the step, won’t get in.Check whether you meant to have this on, and confirm the right people are on the list. See Participant verification and Using audience authentication.

Where to Go Next

Sharing your presentation for participants to join

How to share the access link and QR code, and whether participants need an account.

Using AhaSlides on a restricted network

The ports and domains to whitelist when a company, school or ISP network is blocking AhaSlides.

Have a question?

Contact our support team — if you’re logged in, use the chat bubble in the bottom-right of your dashboard; otherwise contact us here or email hi@ahaslides.com.