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STL

•Created by STL on 3/29/2025 in #support-community

libuv assertion with Convex Auth and Node.js 23.10 on Windows

I'm following the Next.js quickstart with npm create convex@latest. Everything was working, including npm run dev, until I followed the Convex Auth setup instructions with npx @convex-dev/auth. Now, npm run dev always fails with:

D:\GitHub\mysterious_convex_things>node --version
v23.10.0

D:\GitHub\mysterious_convex_things>npm run dev

> mysterious_convex_things@0.1.0 predev
> convex dev --until-success && node setup.mjs --once && convex dashboard

✔ 00:25:01 Convex functions ready! (2.03s)
Opening https://dashboard.convex.dev/d/careful-cricket-653 in the default browser...
Assertion failed: !(handle->flags & UV_HANDLE_CLOSING), file c:\ws\deps\uv\src\win\async.c, line 76

D:\GitHub\mysterious_convex_things>node --version
v23.10.0

D:\GitHub\mysterious_convex_things>npm run dev

> mysterious_convex_things@0.1.0 predev
> convex dev --until-success && node setup.mjs --once && convex dashboard

✔ 00:25:01 Convex functions ready! (2.03s)
Opening https://dashboard.convex.dev/d/careful-cricket-653 in the default browser...
Assertion failed: !(handle->flags & UV_HANDLE_CLOSING), file c:\ws\deps\uv\src\win\async.c, line 76

This looks like it might be related to my use of the latest Node.js 23.10 because I saw https://github.com/nodejs/node/issues/56645 . Is this a known issue? Do I have any way to get around this other than downgrading Node.js to the long-term support release 22.x (which will be the next thing I try)?

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