Showing results for 
Search instead for 
Did you mean: 
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
Twitter | Linkedin | YouTube | GitHub
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!

Helpful resources

PA_User Group Leader_768x460.jpg

Manage your user group events

Check out the News & Announcements to learn more.

Community Connections 768x460.jpg

Community & How To Videos

Check out the new Power Platform Community Connections gallery!

Welcome Super Users.jpg

Super User Season 2

Congratulations, the new Super User Season 2 for 2021 has started!

Carousel 2021 Release Wave 2 Plan 768x460.jpg

2021 Release Wave 2 Plan

Power Platform release plan for the 2021 release wave 2 describes all new features releasing from October 2021 through March 2022.

Top Solution Authors
Top Kudoed Authors
Users online (1,008)