I've disabled macros for MS Office products via GPO like this: https://superuser.com/a/1176677/440382. Unfortunately, this causes a very weird error in MS Word (both versions 2016 and 2013):
multiple alert windows pop up warning about macros (something like "The function you are attempting to run contains macros or content that requires macro language support..."):

despite in GPO (AD Group Policy) there is "Disable all without notification" which also might be seen in local MS Word options itself:

This error occurs only when you open a second MS Word window. When only one .DOC(X) file is opened, there is no such a problem.
Unfortunately, this problem occurs even when there are no macros whatsoever in the DOC(X) file(s).
Any ideas, how to fix it? It is VERY frustrating for our users...
PS:
- I need to have macros globally disabled, because of security reasons
- sorry for screenshots in Czech, that is how the software runs here...
related threads:

