Lightning Knowledge enablement
Key Takeaway
Enabling Lightning Knowledge can't be undone, and standard record types replace article types, so test it in a Sandbox or Trial org before production.
Lightning Knowledge is the version of Salesforce Knowledge, the org's Knowledge base of articles, that runs in Lightning Experience. You enable it to use your Knowledge base in Lightning Experience. Enabling it changes how articles are structured, laid out and shared. How you enable it depends on whether your org already uses Knowledge in Salesforce Classic (Classic Knowledge).
Before you enable Lightning Knowledge
Enabling Lightning Knowledge is a one-way change. After you enable it, you can't disable it, so test it in a Sandbox or Trial org before you enable it in production.
To enable Lightning Knowledge, your org must have one article type.
If your org has multiple article types...
You need a data migration to consolidate them before you can enable Lightning Knowledge.
If Classic Knowledge is already enabled in your org...
Don't enable Lightning Knowledge from "Knowledge Settings". Use the Lightning Knowledge Migration Tool instead. All orgs are required to migrate from Classic Knowledge to Lightning Knowledge. Orgs had to run the Lightning Knowledge Migration Tool before June 1, 2025 to keep access to Knowledge.