I get App Engine from https://cloud.google.com/sdk/docs/
After install, I cant run gsutil init or  gcloud info --run-diagnostics in  Google Clood SDK Shell or Windows Powershell, it ends with this error:
Welcome! This command will take you through the configuration of gcloud.
Your current configuration has been set to: [default]
You can skip diagnostics next time by using the following flag:
  gcloud init --skip-diagnostics
Network diagnostic detects and fixes local network connection issues.
ERROR: gcloud crashed (LookupError): unknown encoding: cp65001
If you would like to report this issue, please run the following command:
  gcloud feedback
To check gcloud for common problems, please run the following command:
  gcloud info --run-diagnostics
I had UTF-8 set as the encoding:
[Console]::OutputEncoding
BodyName          : utf-8
EncodingName      : Unicode (UTF-8)
HeaderName        : utf-8
WebName           : utf-8
WindowsCodePage   : 1200
IsBrowserDisplay  : True
IsBrowserSave     : True
IsMailNewsDisplay : True
IsMailNewsSave    : True
IsSingleByte      : False
EncoderFallback   : System.Text.EncoderReplacementFallback
DecoderFallback   : System.Text.DecoderReplacementFallback
IsReadOnly        : True
CodePage          : 65001
I've tried all this answers, but it didn't help → gsutil command crashes every time on Windows 10, LookupError: unknown encoding: cp0, Python 2.7 : LookupError: unknown encoding: cp65001
I've tried install Python 3.7, 2.7.9 and "Bundled Python".