Hi all
We have a team of engineers who are working on tablets with office 365 installed.

I have built an excel document that has a fair bit of code which basically allows them to import some data, does various calculations and then when they hit a button it creates an e-mail via outlook
All has been working for a few years on the older version with Excel 2013.
They have recently been updated to new tablets with 365 installed.
All has been working ok with no issues.

This week a number of issues have cropped up where the code stops working.
It would appear that they open the Excel document (no other excel docs open) they do a certain amount of inputs and then a window pops up (The fine print) where it states "accept and start excel"
Now Excel was already running, so why does this keep popping up?
Also at this stage the original document wont run any code anymore.
Some of them get past this point, they manage to fill al of the data in but when they hit the button which runs the code to create the outlook mail - nothing happens.
Some of them have no problem.
The code for outlook is late binding.

I read somewhere that its opening excel on a non subscription version and when the pop up appears it takes you to the subscription version but leaves the document hanging and lost control.
It would appear that the original document has also lost focus or cannot communicate with outlook? maybe because its a non subscription version trying to talk to a subscription version.

Sadly I cannot upload the document as its a classified internal document.
The issue is not the document as it works on some of the tablets but not all. They all have the same platform and applications.
Could this be a MS update? they mainly appear to have had the issue start this week.

I run office 365 on a laptop with no issues.

Any suggestions please as there is not/little information on the internet.