CO-Release Build 21364 to Dev Channel + KB5003397 + KB5003402 to .1011

Wow, who knew the answer to the vexing slowness problem was so simple? Someone in Feedback Hub did, that's who.

Problem description: "We’re working on a fix resulting in WSL users finding that File Explorer launch performance regressed after upgrading to Build 21354 and higher"

Solution (it's merely a wrong path!) is in Regedit, which you need to run as Trustedinstaller*: 

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\IdListAliasTranslations\WSL

"Source" there should be \wsl.localhost and not \wsl

*Several ways to do that, including:

https://www.nirsoft.net/utils/advanced\_run.html

Error 0xc1900401, 2 errors on 04/24/2021.

Why would it try to update again with KB5003397 on 4/24/2021 when it was already installed successfully on 03/23/2021 ?

https://aka.ms/AAc1i7f

The recommended section advises updating from Legacy Edge. https://aka.ms/AAc1xzr

There were some problems installing updates, but we'll try again later. If you keep seeing this and want to search the web or contact support for information, this may help: (0x80070422)   

plshelp i can not update my window 10

The recommended section advises updating from Legacy Edge. https://aka.ms/AAc1xzr

This is being investigated. Thanks.

-Eddie