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Error opening file: Cannot read property 'connectionInstanceId' of null

A project that I had recently edit can no longer be opened.  Now getting an error opening file message that states "Cannot read property 'connectionInstanceId' of null"


Can someone please help?


Just tried again it failed, might be jumping the gun since you mentioned it would be a couple hours.  Is there a version change in the web? for example .640 is currently where i am at and .641 indicates the fix that was applied? 

I'll let you know when it completes. It will be v642.

Advocate IV
Advocate IV

Great thank you andy
Advocate II
Advocate II

Awesome, is there a time frame, we have a demo tomorrow morning and can not access the app...

I checked again this morning, but nothing has changed. I get the same error. Is this going to be fixed soon or should I forget about the time that I spent creating my apps?

Regular Visitor

Same here. I am still getting the same error via desktop/web editing. I know you're doing your best to fix the issue, but I urgently need to fix an error in my app.

Not applicable

Why can't Microsoft provide a OneDrive of older versions of the Windows Store version of PowerApps editor?


Luckily I had and old copy and restored that version.  I'm not sure of the legal ramifications of "me" sharing my old version of the app.

I stupidly updated my app when I first ran into this issue and now don't have an older version of it...


Microsoft sent me a link last night that said it should work, but it just doesn't. Really frustrating. I don't understand why they can't revert to a previous version until they fix the bug???

v642 is now live worldwide. Apologies for the delay from my earlier posts.

Clarification: the updated web version of Studio is live now. The Windows version of Studio v642 will rollout over the next 24 hours.

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