Hi @Eva HM
I am mainly responsible for general issues with the Office desktop clients on Q&A forum.
Could you please go to Outlook > Office Account, check the information under Product Information?
It's recommended to take a screenshot and share with us. Please note, to protect your privacy information, you need to cover part of the email account.
Then I suggest you search CMD, right-click the Command Prompt and run as administrator. Then copy and paste the command below in it, click Enter at last:
cscript.exe "%ProgramFiles%\Microsoft Office\Office16\ospp.vbs" /dstatus
(If you are running 32-bit Office on a 64-bit operating system)
cscript.exe "%ProgramFiles(x86)%\Microsoft Office\Office16\ospp.vbs" /dstatus
And then, please also take a screenshot like the image below, and past here for better analysis.
> deleted the university registration account from my system
Did they help you unlinke your university account from Windows Settings > Accounts > Email & accounts and Accessing Work or School?
Currently, I would like to suggest you close all Office apps, go to Credential Manager > Windows Credentials, remove the credentials related to Office includes Outlook.
Then restart Outlook and sign into your new licensed account to have a check.
Any updates, welcome to post back.
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