Pinned app shortcuts: Windows cannot find C:\Program Files...\<versionNumber>\identity_helper.exe

We are aware of this one internally and are working on a fix. It's not fixed yet, though, so you may continue to see this. One interesting bit is that it doesn't happen to everyone - it's a timing issue when the browser updates and we do a bunch of work swapping out additional exe's (like identity_helper.exe).

Thanks for reporting this.
-John