Mac OS 26.7 and M365 Office Applications- upload block errors only on Office applications.

(i just left you a reply and darn it never got saved or ?)

I sincerely appreciate your response- some light at the end of the tunnel or the cliff- you are my rock star for the day. Thank you!!!!!

But i do have a follow up questions:

(1) The office application files are the only one showing this "Upload block error" The climb in file counts did not go up all of a sudden- may be a 100 more on 19th and it was working fine till the 18th and then it showed up with these allergic reactions. Till yesterday with the count total count same and only 180k selected to sync from OneDrive app settings it is works for some office files and does the total count still create these sporadic allergic reactions? This is the part which confuses me- i am not syncing all of them only 180k. I want to clear this out as i wonder if it is MS Office problem only and even having a million option i may be circling back- how can i determine that professor?

(2) I have a M4 Max with 128 gb RAM, 16 cores and 2tb hard drive- i suspect that is enough ammunition to get into the ring- how do i get into the insider ring now- any sign-up option- i am the admin. The article you cited with a link does not provide the information. October 15th is two weeks away.

(3)  i did see an article which stated that the 1M option was released for Windows earlier in April 2026 i think. I do have Parallels running on the same device too- but the article stated no VMs - not sure if Parallels counts as a pure VM - it is running on the Mac with no cloud element like VM Ware or Windows 365.

Would really appreciate a response to the above 3 questions. Cheers and thanks a ton.