Hi Gaurav,
I'm glad to help you.
Do you see the same error message as below picture shows?
There are three necessary licenses for using office online apps.
- OneDrive Online
- SharePoint Online
- Office Online
In conclusion, the license of your work account is control by your company admin, while your personal account are free to use online office applications without restrictions.
If you ensure that you have the necessary license, you can clear your web browser's cache, cookies, and history, then go to office portal and try creating new online files again.
If you are still confused with the problem, you can sign in your work account and post your Office 365 portal subscriptions page here. We will keep giving support until your question been solved.
Thanks.
Regards,
Eric