Dear Alonso_25,
Greetings! Thank you for posting in Microsoft Community.
As per your description, it seems that Stocks function is missing from the Data Types tab in Excel on your Windows device. And you have tried adding thru customize ribbon and O365 uninstall and reinstall.
We've also done a quick test and we cannot reproduce a similar situation on our side with version 2111, version 2301 and Excel web app, below is a screenshot of our test for your reference:
Excel web app:
Excel desktop app:
If our understanding of the scenario above is not consistent with yours, please feel free to point it out. At meantime, would you please share some screenshots of the issue for a better understanding?
If the understanding above is right, and if you are using Office desktop app, we'd recommend you check if connected service is on
- In Excel, select File > Options > Trust Center > Trust Center Settings.
- Select Privacy Options > Privacy Settings.
- Select Turn on optional connected experiences.
- Select OK > OK > OK.
Please also sign out of office, remove the stored Credentials in the Credential Manager via opening Control Panel > Credential Manager > Manage Windows Credentials >Delete all Microsoft Officecredentials and sign back in to check the outcome.
If you are using Excel Online in browser, we'd recommend you try on another browser in-private with another network to check the outcome.
If the issue persists, we do understand the inconvenience caused and apologize for it. We'd like to collect more information to better help you and do further troubleshooting:
- If you are using Office desktop app, please share your Office version with us by taking a screenshot from Excel > File > Account as shown below:
- If you are using Excel desktop app, will the same issue occur if you use Excel web app in browser or vice versa?
- What about the other users in your school? Do they encounter a similar situation in Excel on their device?
- Will the same issue occur if you use another device to check the outcome?
- Please also share your subscription info with us by sign your work or school account in View account > Subscriptions to take a screenshot as shown below:
We look forward to your reply. Thanks for your cooperation!
Hope you stay safe and healthy always.
Sincerely,
Rhoda | Microsoft Community Moderator