Normal Map Issue

My model looks seamless in Blender, but after exporting to UE5, seams appear once I attach the normal map. Could anyone advise me on how to fix this? Thanks in advance!

The issue still persists despite all the troubleshootings, including flipping the green channel, using different version of Ue. Here’s the shared drive link to my Blender file—would appreciate it if you could take a look at the settings and maps. Thanks!

blender uses OpenGL tangent space. unreal uses DirectX tangent space. in the normal map texture you gotta search for the “flip green channel” option and tick it. ez