3032195 - Error: "Package is invalid: 'CRX_REQUIRED_PROOF_MISSING'. " occurs when setting up multiple displays for Digital Boardroom and installing "multi-desktop-full-screen-for-chrome.crx" on Chrome

• Error: "Package is invalid: 'CRX_REQUIRED_PROOF_MISSING'. " occurs when setting up multiple displays for Digital Boardroom and installing "multi-desktop-full-screen-for-chrome.crx" on Chrome 

• SAP Analytics Cloud 2021
• Chrome

1. Configure multiple displays for Digital Boardroom by following the help guide.

https://help.sap.com/viewer/00f68c2e08b941f081002fd3691d86a7/release/en-US/5ef6a92fcc73491ab8a1ca49cc9bdbf1.html

2. Install multi-desktop-full-screen-for-chrome.crx package in Chrome by following the guide.

https://github.com/SAP/digitalboardroom-multidesktop-fullscreen-chrome

3. Error occurs when drag multi-desktop-full-screen-for-chrome.crx into the extensions page within Google Chrome.

This depends upon Chrome policy.

Policy for Chromium: 
https://www.chromium.org/administrators/policy-list-3#DeviceBlockDevmode

Workaround1:

Turn on "Developer mode" on top right of chrome://extensions, then drag multi-desktop-full-screen-for-chrome.crx into the extensions page.

Workaround2:

It could be the corporate setting from customer IT.

Here is how administrators set Chrome browser policies on managed PCs:
https://support.google.com/chrome/a/answer/187202?hl=en#zippy=

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