90.0.818.0 or March monthly updates - Edge processes spawning and crashing. Can no longer open Edge.

I'm not sure whether the trigger was the Edge Dev 90.0.818.0 update release, or, the March Security Updates, but on multiple Dell laptops I'm now seeing identical behaviour: Without actually launch...

VRStudio
Mar 11, 2021
AnthonyB_AUS
Carbon Black Cloud: MS Edge Failure to launch after 89.0.774.48 update
Environment
Carbon Black Cloud Sensor: All Supported Versions
Endpoint Standard (was CB Defense)
Microsoft Windows: All Supported Versions
Microsoft Edge browser: v89.0.774.48

Symptoms
Updating MS Edge to 89.0.774.48
CPU Maxed out
Edge will not launch
Multiple Edge attempts to relaunch visible in task manager

Cause
There was a change in the behavior of the latest version of Microsoft Edge

Resolution
As of 9:55 PM EST on March 09, our Engineering team resolved the issue with the recent Microsoft Edge update by pushing the necessary changes to all production environments. As of this time, it is safe to remove any bypass rules that were created in the interim.

Additional Notes
Enterprise EDR only orgs will not be affected with this issue

Related Content
https://community.carbonblack.com/t5/Knowledge-Base/Carbon-Black-Cloud-What-are-the-differences-between-API-Bypass/ta-p/75758

https://community.carbonblack.com/t5/Knowledge-Base/Carbon-Black-Cloud-MS-Edge-Failure-to-launch-after-89-0-774-48/ta-p/101461#U101461

Forum Discussion

90.0.818.0 or March monthly updates - Edge processes spawning and crashing. Can no longer open Edge.

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