Windows 10: Problem activating Microsoft 365 on laptop running 8.1

I recently purchased Microsoft 365 Family package. Installed successfully on two desktops. However even though it has been installed on my laptop running 8.1, I cannot activate it. I am not very tecky so a simple answer would be great. Thank you.

:)

 

Having trouble activation Office 365

Error 0x8004FC12 when activating Office 2013 or Office 365

Source "We’re sorry, something went wrong and we can’t do this for you right now. Please try again later. (0x8004FC12)" when activating Office 2013 or Office 365

 

Problem Activating Office 2019

You can save a few steps and do this

1. Go to this page: Microsoft 365
2. Log in with your Microsoft account
3. Enter your Office product key
4. Use the link given to download Office 2019
5. install Office 2019

I used this method for both of my copies of Office 2019

BTW, Microsoft Toolkit 2.71 says this:
Product Description: Office19_ProPlus2019MSDNR_Retail

 

Problems syncing Outlook.com email with Outlook 365 and with Windows Phone

I use my Outlook.com email in three ways:

• via the Web in IE10
• via Outlook 365 on Windows 7 laptop
• via Windows Phone 8 on Lumia 920.

I am experiencing problems syncing with Outlook 365 on Win7 AND with Windows Phone 8 on Lumia 920.



The longer I leave a message in my Inbox, the more copies of that messge will appear duplicated in Outlook 365 on my Win7 laptop. Someone suggested deleting my Outlook.com account from Outlook 365 and then re-adding the account, which actually solved this
problem for a couple of months. Now the problem has returned: multiple duplicates of the same message in my Outlook 365 Inbox. Am I forced to go through this arduous process eveytime this problem happens?



Also, there are some messages that, when deleted using any of three ways listed at the top of this message, will remain in my Windows Phone 8 Inbox. I will repeatedly delete them and these few messages always return to my Windows Phone 8 Inbox.



Please note that when using Outlook 365 or Windows Phone 8, I have no problems syncing with my other two email accounts, which are not Microsoft accounts.



Will someone PLEASE help me fix my two sync problems of my Microsoft account with the Microsoft software and Microsoft hardware?



Thank you very much for your time and help.