This is a known bug with Microsoft VSCode and we depend on it https://github.com/Microsoft/vscode/issues/36630

Temporary solution

• PackageManager is unable to install tool http://docs.platformio.org/en/latest/ide/vscode.html#known-issues

>pio platform install espressif32
Please wait while upgrading PlatformIO...
Platform Espressif 32
--------
Updating espressif32                     @ 0.11.0         [Up-to-date]
Updating tool-esptoolpy                  @ 1.20100.0      [Up-to-date]
Updating framework-arduinoespressif32    @ 1.3.2          [Up-to-date]
Uninstalling toolchain-xtensa32 @ 2.50200.0:    [OK]

PlatformIO has been successfully upgraded to 3.5.0rc6!


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PlatformManager: Installing espressif32
espressif32 @ 0.11.0 is already installed
PackageManager: Installing toolchain-xtensa32 @ ~1.50200.2
Downloading  [------------------------------------]    0%
Please manually remove file `C:\Users\tekks\.platformio\packages\_tmp_installing-au4eow-package\toolchain-xtensa32-windows-1.50200.2.tar.gz`
Warning! Package Mirror: [Error 32] The process cannot access the file because it is being used by another process: 'C:\\Users\\tekks\\.platformio\\packages\\_tmp_installing-au4eow-package\\toolchain-xtensa32-windows-1.50200.2.tar.gz'
Looking for other mirror...
Downloading  [------------------------------------]    0%
Please manually remove file `C:\Users\tekks\.platformio\packages\_tmp_installing-zzgqel-package\toolchain-xtensa32-windows-1.50200.2.tar.gz`
Warning! Package Mirror: [Error 32] The process cannot access the file because it is being used by another process: 'C:\\Users\\tekks\\.platformio\\packages\\_tmp_installing-zzgqel-package\\toolchain-xtensa32-windows-1.50200.2.tar.gz'
Looking for other mirror...
Error: Could not install 'toolchain-xtensa32' with version requirements '~1.50200.2' for your system 'windows_amd64'.
If you use Antivirus, it can block PlatformIO Package Manager. Try to disable it for a while.