Can Microsoft cloud app security (MCAS) affect the pipeline editor?

[MarekPolasek]

Hi,

The pipeline editor stopped working for one of our customers. Instead of the editor, a blank page is displayed. I have tried different browsers and cleared all caches without success. Unlike other customers who have Fabric, they have deployed MCAS. Is it possible that MCAS is blocking the editor? Does anyone have a similar experience?
The editor for DataFlows is fine.
Thank you

[MarekPolasek · Accepted solution]

MCAS was not the problem. Confirmed by MS support that this is a Fabric bug that will be fixed soon.

[v-kongfanf-msft]

Hi @MarekPolasek ,

Check and adjust MCAS policies in below way:

• Log in to the MCAS portal:
• Review the policy: Go to Control > Policies.

For more details, you can refer to below document:

Microsoft Defender for Cloud Apps documentation - Microsoft Defender for Cloud Apps | Microsoft Lear...

Best Regards,
Adamk Kong

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

[MarekPolasek]

Hi Adamk, 

Thank you for your reply. I have contacted the administrator to check the settings. I personally don't have access to MCAS. According to him, there is any restriction on Fabric.

It is very strange that developer tools in the browser does not report any problem with scripts or that some resource is not available. Everything seems to load. It's just that the browser doesn't render anything. If I want to create a new pipeline, the window to create a new pipeline doesn't even render.