People often encounter or seek information on issues for which no clear answer exists. For example, information may be scarce or nonexistent, as in data voids or unanswerable questions; knowledge might be evolving, as with current events, emerging topics, or rumours; or there may be multiple perspectives on an issue, particularly in the case of debated topics. We refer to these as uncertainty scenarios. In such scenarios, information access systems are facing different risks, like eliciting a false sense of information certainty, over-reliance, promoting mis- and disinformation, or exposing users to viewpoint-biased information. This full-day workshop brings together researchers and practitioners focusing on information access in scenarios of uncertainty to engage in discussions around challenges and potential solutions. For that, we have planned a highly interactive in-person workshop programme with invited talks, roundtables, and a collaboration fair. The discussions and outcomes of the workshop will be shared in a report after the workshop.