Two accounts on the same email adress – problem with Home & Business 2021 für Mac

Dear Charles,
<br />thank you so much for your help. I must update the given information a bit: When I posted this, I thought that only two docs were affected, but in reality there a more - yet, by far not all of them. I can open others, that are filed on that same external drive as well (in the same folder or in others), without any issues. All of them are docx.
<br />I worked on two of them on Dec 9 the last time with Word Microsoft 365, and all was fine. I sent these docs via email back then, but when I try to open them in that email, the same error message appears.
<br />Strangely enough, these docs can be easily opened by another email recipient (android), who tried to file it under a different file name and then sent it back to me, with no positive result, unfortunately. Just now, however, I decided to send the docs to another email address of mine, where I could open them and add a small modification, file them in the cloud and send them back to my inbox - and, gladly enough, it worked, I can open the documents without any issues. What on earth is the issue???
<br />Cheers, Denise
<br />

Hi rolfschroeder1,

I am Dave, an Independent Advisor, I will help you with this.

Log into this page, with the same Microsoft Account you used to purchase the Microsoft 365 Subscription: https://account.microsoft.com/services/

On that page, do you see that your Subscription is active with the correct expiry date?
<br />

habe die Antwort schon gefunden

hir die Lösung als jemand das selbe problem hat

support.office.com/.../Get-started-with-the-OneDrive-for-Business-Next-Generation-Sync-Client-on-Mac-OS-X-d11b9f29-00bb-4172-be39-997da46f913f

Hallo Greg,
<br />I gave you a short answer yesterday. My Problem is: I have an account for microsoft and a valid subscription for microsoft 365 which I can use without problems on my Apple iMac. But I cannot use the subscription on my Apple Laptop, which is also registered on the same account. On the Laptop there is a message that I should renew the subscription. And then when I try to correct it on the Laptop, I get the answer that there is no account available with this user name. But on the same homepage by microsoft I can get the information that my account and my subscription are okay. - So this state of affairs means that there is a mistake in the communication between my Laptop and the microsoft 365 administration. For the moment I cannot get any chat oder phone support by microsoft - and the automatically given supports are useless. (I have already deinstalled all office programs on the Laptop and then reloaded it - but without any result for the problem.)
<br />I would be very glad if you can solve this problem or give me an advice for further action or support.
<br />Sincerely
<br />Thomas
<br />

Skype Business Version: version 6.3.1558.0

Windowsphone OS build: 10.0.14955.1000

Mac IOS Version:

I have enabled the option that skype can/should communicate with external

I have switched now all devices, mac, windows phone on insider ( Fast ring) at least not on windows phone

updatating mac version right now

This is a very annoying bug, no change with the problem.