NAVMESH needs to be rebuilt

[walemmlis]

Hello,

I’m using UE5.0. A NavMeshBoundsVolume is used in my design for AI controlled NPC.
But, there is always an error report ‘NAVMESH needs to be rebuilt’ once I started PIE.

I explored the post with similar question in this forum and tried the solutions proposed as illustrated below. But, no one is working.

[SupportiveEntity]

Hey there @walemmlis! Have you tried manually rebuilding the navigation using the command RebuildNavigation? If so, this might be that weirdness with multiplayer since I see your project up there. We could also try checking force rebuild on load in the recast nav mesh, but if you have large levels this can get heavy.

Here’s a thread where they allowed client side navigation:

Navmesh needs to be rebuilt UE5 Multiplayer?

I’ve moved my 4.27 project over to UE5 & When I start it in client mode with 2 players, I got an error saying “Navmesh need to be rebuilt”. Even after rebuilding project doesn’t fix it. Seems to be a problem with multiplayer only shows an error for each client that join’s. Nav mesh & AI still work as before tho even with this error? Also tested this in fresh project’s, just third person & first person template’s, 2 player client net mode with a plain nav mesh dropped in, Same error Is there s…

[walemmlis]

@SupportiveEntity , Indeed, after checking ‘Allow Client Side Navigation’ the error is gone. Thanks a lot!