Thousands of E0434352.CLR exceptions during test run in Azure Pipelines using LOCAL agent

Uncheck the "Collect advanced diagnostics in case of catastrophic failures" under the test task.

There's no need to disable the test rerun!

(This is as per @GregM's answer, however I couldn't edit his post to make this stand out a bit more in his text)

its a bug in AzureDevOps. You can read about it here: https://developercommunity.visualstudio.com/content/problem/446334/hundreds-of-e0434352clr-exceptions-during-test-run.html

You can do a workaround by disabling test rerun. If you don't want to do that, I've managed to disable them by turning off: "Collect advanced diagnostics in case of catastrophic failures" in the visual studio test task.