1. For linux distros you want to make sure that i386 architecture is added. This however is usually done upon installing crossover via terminal using the .deb or .rpm. See following link on this: https://www.codeweavers.com/su...
2. Address any missing 32-bit libraries by running the following command in terminal
/opt/cxoffice/bin/cxfix --auto
3. You will need '32-bit online installer' for Office as the 64-bit does not install.
4. You can download the installer if you have an active or trial Microsoft Office 365 subscription from https://www.office.com.
You will need a user agent spoofer set to spoof Microsoft Edge in order to get the Windows version of the installer.
Then, to get the 32-bit .exe file:
Go to "My Account" and then click on "Services and Subscriptions" and then "Install". When the window to download the installer pops up, click on "Other options" and select Version:32-bit.
Latest update : using the .img or iso currently fails to install.
On a final note, if you have a O365 subscription that installs Office 2019, it is not fully supported. Additionally any Business versions are currently problematic in CrossOver. Versions of Office that require 2-step activation (2FA), KMS, and/or University account credentials do not currently activate successfully with CrossOver.