I had a customer computer where Sage would prompt to upgrade to be able to open their company file. When it got to the stage where Sage should be downloading the file – I got the error code “AUSE099” and no further information.
There seems to be no decent information on the internet on what can cause the problem. Sage have the boring advice of “download the update manually and install it” which wasn’t what I wanted.
Using Process Monitor I tracked the problem down, in my case, to the Background Intelligent Transfer Service (BITS) being stopped and disabled on the computer.
I enabled it and started the service, re-ran Sage and clicked update – this time it worked!
Hope this helps someone.