Defox Sorry for the delayed response. Are you still running into this issue?
One possible reason for this is if you are using an older version of Symantec antivirus, it fails a Code Integrity Guard check in the latest Chromium builds. In the meantime you can set this policy to disabled if you are still blocked - https://docs.microsoft.com/en-us/deployedge/microsoft-edge-policies#renderercodeintegrityenabled
Yes, you are correct - we discovered on Monday that Symantec was causing the issue. After upgrading to SEP 14.2 the issue was resolved. We are rolling out the upgrade and asking users in the meantime to use the switch -disable-features=RendererCodeIntegrity in Edge Beta as a workaround until they receive the new version of SEP