tried to install halo CE 1.0.10 patch, and it said

Games Other Halo
1

that an error has occurred and the game could not be updated.

2

Try updating to 1.09 first and then applying the final Halo PC patch.

Also just in case…ensure you are using a genuine CD key.

3

> 2574155679901782;2:
> Try updating to 1.09 first and then applying the final Halo PC patch.
>
> Also just in case…ensure you are using a genuine CD key.

I tried 1.09, still says the game could not be updated.