Kurast Undercity Tribute Not Working for Horadric Cube crafting materials was a confirmed Diablo 4 bug in patch 3.2.1. Blizzard fixed it in Hotfix 4 on September 22, 2026, stating that Horadric Cube Crafting Materials were not being rewarded with their associated Kurast Undercity Tributes.
That means a successful run using an appropriate Tribute should now provide the Cube-material reward tied to that Tribute. The hotfix fixes the reward path going forward, but Blizzard’s notes do not say that Tributes consumed before the fix will be returned or that missing materials will be granted retroactively.
Kurast Undercity Tribute Not Working: what Hotfix 4 changed
Image credit: Blizzard Entertainment
Hotfix 4 fixes the exact connection between associated Kurast Undercity Tributes and their Horadric Cube Crafting Materials. Before the fix, players could spend a relevant Tribute, complete the activity and still miss the Cube materials they expected from the Tribute reward.
If Kurast Undercity Tribute Not Working was affecting your runs, restart Diablo 4 before spending another Tribute. Then use a Tribute whose current in-game description specifically associates it with Horadric Cube crafting materials. The live tooltip is important because not every Tribute has the same reward purpose.
Complete the Undercity run normally and check the reward at the end. After Hotfix 4, the associated Cube materials should be included when the qualifying Tribute and run conditions are met.
What if you already lost a Tribute before the fix?
A Kurast Undercity Tribute Not Working report from before September 22 is not automatically repaired just because the reward bug is fixed. Blizzard does not state in Hotfix 4 that previously consumed Tributes will be replaced or that missing Horadric Cube materials will be mailed to affected accounts.
If you already spent a Tribute and received no associated Cube materials:
- Restart the game and check your current materials once.
- Confirm which Tribute you used and what its live tooltip says it should reward.
- Note the difficulty, platform and approximate time of the affected run.
- Keep screenshots of the Tribute and end-of-run rewards if available.
- Do not assume a replacement Tribute or material grant is guaranteed.
- Report a post-hotfix failure separately if a new qualifying Tribute still gives no Cube materials.
The key distinction is the same as with other Hotfix 4 fixes: the underlying Kurast Undercity Tribute Not Working bug is fixed, while retroactive compensation has not been announced in the hotfix notes.
Which Tributes should give Horadric Cube materials?
Blizzard’s Hotfix 4 wording refers to Horadric Cube Crafting Materials being rewarded with their associated Kurast Undercity Tributes. It does not list every Tribute name and quantity in the hotfix note, so the safest way to identify a qualifying Tribute is to read its current in-game reward description before using it.
Do not assume that every Undercity Tribute is supposed to award Cube materials. Kurast Undercity has multiple reward types, and using the wrong Tribute would not prove that Kurast Undercity Tribute Not Working has returned.
For the wider crafting system, How to Use the Horadric Cube in Diablo 4 explains how Season 15 connects Cube materials to endgame activities. How to Craft Mythic Uniques in Diablo 4 also covers the current Cube, Jeweler and Blacksmith Mythic routes.
What to check if the Tribute still gives no materials
If Kurast Undercity Tribute Not Working appears to happen after the hotfix, start with the simple checks before spending a stack of Tributes. Fully restart the client, make sure the Tribute tooltip actually names the Cube-material reward, and complete one fresh run while noting your materials before and after.
If the expected reward is still absent, record the exact Tribute name, its description, your platform, difficulty and the result screen. That creates a clean post-hotfix reproduction instead of mixing the new report with runs that happened before September 22.
Also remember that the hotfix fixes the reward from associated Tributes. It does not say every Horadric Cube material source or every Undercity reward was changed. Keeping the report narrow helps identify whether the original Kurast Undercity Tribute Not Working bug has actually returned.
You can check the official Diablo IV website for current first-party information as Blizzard continues to update Season 15.
Is Kurast Undercity Tribute Not Working fixed now?
Yes, according to Blizzard’s Hotfix 4 notes, the associated Tribute reward bug has been fixed. New qualifying runs should award their Horadric Cube crafting materials correctly.
The unresolved part is compensation for runs completed before the fix. Hotfix 4 does not promise replacement Tributes or retroactive material grants. If you were affected earlier, preserve the details of the lost run. If a fresh qualifying run fails now, report it as a new issue.
For normal play after September 22, Kurast Undercity Tribute Not Working should no longer block the Horadric Cube material route. Restart, verify the Tribute reward text and test with a fresh qualifying run before committing a large stack.
