First have you talked with your reseller?  Are you updating the OS or Sage 100?  The normal sequence usually starts with a call to the reseller if you have to ask this question.

just updating Sage 100 to latest version - 20.7.34.0 to 21.2.107 on all the clients and the server.  I just want to know if the updates are cumulative, meaning I can just install latest, or if I have to do them sequentially through the advisor.  Thanks.

those versions sound like Sage 100 contractor not Sage 100 (formerly Sage 100 ERP).

Hi Chris Wargo,

Since it looks like you are using Sage 100 Contractor, I am going to move this post to that Support Group so that other users of this software will see it and can offer you their thoughts and insight.

Thanks,

Erzsi

Hi Chris,

You can go straight to the latest update as they are cumulative. The latest update is 21.3.39, which is the year-end tax update, so you need will need to ensure that your final payroll for 2018 has been processed before applying this update.

Thank you,

Greig Hollister

Sage

I recommend printing out and following Sage's Year-End guide, found here: http://cdn.na.sage.com/docs/en/customer/100contractor/21_3US/open/Year-EndGuide.pdf