How I want to fix Arduino Uno Problem

Development Tools IDE 1.x
1

Arduino: 1.8.7 (Windows Store 1.8.15.0) (Windows 10), Board: "Arduino/Genuino Uno"

exec: "C:\Program Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.15.0_x86__mdqgnx93n4wtt\hardware\tools\avr/bin/avr-g++": file does not exist
Error compiling for board Arduino/Genuino Uno.

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

2

This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.

You need to do what it told you to.
It may also be worth dumping the APP STORE version in favour of the proper desktop IDE

Please also learn to use CODE TAGS for error output etc. ( </> )

3

Also posted at:

If you're going to do that then please be considerate enough to add links to the other places you cross posted. This will let us avoid wasting time due to duplicate effort and also help others who have the same questions and find your post to discover all the relevant information. When you post links please always use the chain links icon on the toolbar to make them clickable.

4

Ugh, the missing compiler issue.

Does this only happen with the windows store app? It seems that the windows store app version is really flaky, i recommend never using it (or any other windows store app for that matter)