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Frequent Visitor

Unable to edit Powerapps in web edit



When I try to open my canvas app in firefox I get this grey screen with 'undefined' in the top tab:


Undefined in the tabUndefined in the tab

I am having this issue for 2 weeks now. I am able to create a new app which works but when I close the app I am not able to re-edit again.


I've also tried another browser/incognito and deleted all the cookies considering PowerApps.


Anyone know what this issue is causing?

Super User
Super User

Hi @WoLe98,


Try opening the APP with incognito window. Most of the time that will solve your issue.

I hope this resolved your issue if you see any challenge/need further help please let me know I am always happy to do it for my community.

Business Applications MVP, Microsoft Certified Trainer
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If this post helps you give a and if it solved your issue consider Accept it as the solution to help the other members / new members of the community.
Frequent Visitor

Thank you for your help.


I've tried incognito in Firefox/Chrome but no success..

Also checked my licensing but that seems to be fine


Do you maybe have another idea?

Helper I
Helper I

Did you resolve this? I'm having the same issue. 

I've also tried reverting the app to a previous version, and exporting/importing it as a new app.

Frequent Visitor



After a lot of contact with Microsoft Power Apps Support it was solved.

My SQL Server database had a datatype which was causing this issue with the SQL Server connection in Power Apps.

The datatype was BINARY.


Are you experiencing this issue with a SQL Server connection as well?


Happy to help!

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