Install VScode Platformio win10

Hi
i updated my system from win7 to win10.
I used before Atom & Platformio

now i install all new and install VScode and Platformio-

I get now some problems with my libs

Thats my platformio.ini

[env:megaatmega2560]

platform = atmelavr

board = megaatmega2560

framework = arduino

lib_deps = 

    paulstoffregen/Time@^1.6

    sodaqmoja/Sodaq_SHT2x@^1.2.0

    arduino-libraries/Ethernet@^2.0.0

    paulstoffregen/OneWire@^2.3.5

    milesburton/DallasTemperature@^3.9.1

    adafruit/RTClib@^1.12.4

    thomasfredericks/Bounce2@^2.55

    paulstoffregen/TimeAlarms@0.0.0-alpha+sha.c291c1ddad

    chuckbell/MySQL Connector Arduino@^1.2.0

    https://github.com/rambo/I2C.git

lib_deps_external =

[env:myenv]

lib_extra_dirs =

    C:\Users\a2106\Documents\PlatformIO\Projects\ext-libs

when i compile my program then i get some errors

Warning! Ignore unknown configuration option `lib_deps_external` in section [env:megaatmega2560]
Processing megaatmega2560 (platform: atmelavr; board: megaatmega2560; framework: arduino)
----------------------------------------------------------------------------------------------------------------------------------Verbose mode can be enabled via `-v, --verbose` option
CONFIGURATION: https://docs.platformio.org/page/boards/atmelavr/megaatmega2560.html
PLATFORM: Atmel AVR (3.0.0) > Arduino Mega or Mega 2560 ATmega2560 (Mega 2560)
HARDWARE: ATMEGA2560 16MHz, 8KB RAM, 248KB Flash
DEBUG: Current (avr-stub) On-board (avr-stub, simavr)
PACKAGES:
 - framework-arduino-avr 5.1.0
 - toolchain-atmelavr 1.50400.190710 (5.4.0)
Converting grobot-25-12-2020.ino
LDF: Library Dependency Finder -> http://bit.ly/configure-pio-ldf
LDF Modes: Finder ~ chain, Compatibility ~ soft
Library Manager: Installing git+https://github.com/rambo/I2C.git
UserSideException: Please install Git client from https://git-scm.com/downloads:
  File "C:\Users\a2106\.platformio\penv\lib\site-packages\platformio\builder\main.py", line 170:
    env.SConscript("$BUILD_SCRIPT")
  File "C:\Users\a2106\.platformio\packages\tool-scons\scons-local-4.0.1\SCons\Script\SConscript.py", line 598:
    return _SConscript(self.fs, *files, **subst_kw)
  File "C:\Users\a2106\.platformio\packages\tool-scons\scons-local-4.0.1\SCons\Script\SConscript.py", line 287:
    exec(compile(scriptdata, scriptname, 'exec'), call_stack[-1].globals)
  File "C:\Users\a2106\.platformio\platforms\atmelavr\builder\main.py", line 162:
    target_elf = env.BuildProgram()
  File "C:\Users\a2106\.platformio\packages\tool-scons\scons-local-4.0.1\SCons\Environment.py", line 219:
    return self.method(*nargs, **kwargs)
  File "C:\Users\a2106\.platformio\penv\lib\site-packages\platformio\builder\tools\platformio.py", line 62:
    env.ProcessProjectDeps()
  File "C:\Users\a2106\.platformio\packages\tool-scons\scons-local-4.0.1\SCons\Environment.py", line 219:
    return self.method(*nargs, **kwargs)
  File "C:\Users\a2106\.platformio\penv\lib\site-packages\platformio\builder\tools\platformio.py", line 140:
    project_lib_builder = env.ConfigureProjectLibBuilder()
  File "C:\Users\a2106\.platformio\packages\tool-scons\scons-local-4.0.1\SCons\Environment.py", line 219:
    return self.method(*nargs, **kwargs)
  File "C:\Users\a2106\.platformio\penv\lib\site-packages\platformio\builder\tools\piolib.py", line 1062:
    project.install_dependencies()
  File "C:\Users\a2106\.platformio\penv\lib\site-packages\platformio\builder\tools\piolib.py", line 898:
    lm.install(spec)
  File "c:\users\a2106\.platformio\penv\lib\site-packages\platformio\package\manager\_install.py", line 49:
    spec, silent=silent, skip_dependencies=skip_dependencies, force=force
  File "c:\users\a2106\.platformio\penv\lib\site-packages\platformio\package\manager\library.py", line 86:
    force=force,
  File "c:\users\a2106\.platformio\penv\lib\site-packages\platformio\package\manager\_install.py", line 97:
    pkg = self.install_from_url(spec.url, spec, silent=silent)
  File "c:\users\a2106\.platformio\penv\lib\site-packages\platformio\package\manager\_install.py", line 141:
    vcs = VCSClientFactory.new(tmp_dir, url)
  File "c:\users\a2106\.platformio\penv\lib\site-packages\platformio\package\vcsclient.py", line 55:
    src_dir, remote_url, tag, silent
  File "c:\users\a2106\.platformio\penv\lib\site-packages\platformio\package\vcsclient.py", line 72:
    self.check_client()
  File "c:\users\a2106\.platformio\penv\lib\site-packages\platformio\package\vcsclient.py", line 138:
    "Please install Git client from https://git-scm.com/downloads"

if i install with win10 the Git Client
no helps

what is wrong
can anybody help?

Regards
Achim

Have you restarted your computer already? So that the changes to PATH take effect for sure.

Please also open a terminal (Windows + R → cmd.exe) and execute git --version. Does it return a sensible version info or “Command not found”?

As a last thing, you can also uninstall and re-install the VSCode PlatformIO extension.

thanks so much
only restart

Thank YOU