web
You’re offline. This is a read only version of the page.
close
Skip to main content

Announcements

Welcome to the Power Platform Communities
News and Announcements icon
Community site session details

Community site session details

Session Id :
Power Platform Community / Forums / Power Apps / PCF preview page blank
Power Apps
Unanswered

PCF preview page blank

(0) ShareShare
ReportReport
Posted on by Lucas001 2,529 Super User 2026 Season 1

Hi everyone,

 

since today I face an issue that my PCF cannot be tested using npm start watch.

The entire process runs smooth till the page is opened. It doesn't work for any of my already implemented PCF.

Those are working PCFs and already live, so I am sure that they are implemented correctly.

 

I get strange errors inside the console:

Lucas001_1-1712923579470.png

Those don't look like they are related to my problem, yet haven't seen them before.

 

Page looks like that:

Lucas001_2-1712923606754.png

 

 

 

Any idea?

Categories:
Power Apps Pro Dev & ISV
I have the same question (2)
  • Lucas001 Profile Picture
    Lucas001 2,529 Super User 2026 Season 1 on at

    So the error seems now to be gone.

    Does anybody know how the PCF preview feature is connected with microsoft servers or specific .js-libraries which could have had an issue between 10 am CEST to 3 pm CEST? The error seems to have effected Javascript loading or specific executions. We had similar error on our power pages. How those are related really is a question to me.

  • CU30081637-0 Profile Picture
    CU30081637-0 2 on at
    I am getting same error what to do

Under review

Thank you for your reply! To ensure a great experience for everyone, your content is awaiting approval by our Community Managers. Please check back later.

Helpful resources

News and Announcements

Welcome to the Power Platform Communities

Quick Links

Introducing the 2026 Season 1 community Super Users

Congratulations to our 2026 Super Users!

Kudos to our 2025 Community Spotlight Honorees

Congratulations to our 2025 community superstars!

Congratulations to the February Top 10 Community Leaders!

These are the community rock stars!

Leaderboard > Power Apps

#1
WarrenBelz Profile Picture

WarrenBelz 545 Most Valuable Professional

#2
Haque Profile Picture

Haque 314

#3
Kalathiya Profile Picture

Kalathiya 234 Super User 2026 Season 1

Last 30 days Overall leaderboard

Featured topics

Auto-Populate field Power Pages
Gallery Tabs - Show or Hide Tabs based on Field Value
How to patch multiple records at once
Enable Copilot for end users in model-driven apps
Question for everyone : How are you using Create Text GPT in AI Builder?
Community content - sample components, blogs etc. - Link to this page (http://aka.ms/PCFdemos)
Welcome to the Power Apps forum!

Product updates

Microsoft Power Platform Community release plans