I'm using SendKeys to access various parts of a company intranet, input
usernames/passwords, move through various menus etc.

Each subroutine works fine in itself but when I try to run them all
together, I keep getting errors at the "AppActivate .....(2nd window)". But
when run separately, this (second) macro works quite OK.

I've tried to solve the problem by using:

Appactivate "Microsoft Excel"

at the end of the first subroutine in order to 'return' to the Excel window,
but this doesn't seem to work either.

What's causing the problem and how do I solve it?