import Arcpy error after upgrade from 2.9 to 3.1

[DavideBollo]

Configuration:

Windows 10 Pro
Version 22H2
Os Build 19045.3393

tried to import library from python command prompt, getting the error:

(arcgispro-py3) C:\Program Files\ArcGIS\Pro\bin\Python\envs\arcgispro-py3>python
Python 3.9.16 [MSC v.1931 64 bit (AMD64)] :: Anaconda, Inc. on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import arcpy
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "C:\Program Files\ArcGIS\Pro\Resources\ArcPy\arcpy\__init__.py", line 77, in <module>
    from arcpy.geoprocessing import gp
  File "C:\Program Files\ArcGIS\Pro\Resources\ArcPy\arcpy\geoprocessing\__init__.py", line 14, in <module>
    from ._base import *
  File "C:\Program Files\ArcGIS\Pro\Resources\ArcPy\arcpy\geoprocessing\_base.py", line 14, in <module>
    import arcgisscripting
  File "C:\Program Files\ArcGIS\Pro\bin\Python\envs\arcgispro-py3\lib\site-packages\arcgisscripting\__init__.py", line 131, in <module>
    from ._arcgisscripting import *
ImportError: DLL load failed while importing _arcgisscripting: The specified procedure could not be found.
>>>

follow DarrenConly instructions without success:

https://community.esri.com/t5/arcgis-pro-questions/importerror-dll-load-failed-while-importing/m-p/1... 

Tried many solution found on web...

added to global environment variable "PATH":
C:\Program Files\ArcGIS\Pro\bin\Python\envs\arcgispro-py3\Lib\site-packages\arcgisscripting
C:\Program Files\ArcGIS\Pro\bin\Python\Scripts
C:\Program Files\ArcGIS\Pro\bin\Python

added to global environment variable "PYTHONPATH":
C:\Program Files\ArcGIS\Pro\bin\Python\envs\arcgispro-py3\Lib\site-packages\arcgisscripting

Clear installation
No Arcmap Installed
No QGis Installed
No other python environment installed
No VScode or other IDE installed
Unable to create cloned workspace (with arcgis or conda command prompt)

I don't know how to solve...

thanks in advance

[DavideBollo]

solved (but is not a solution)...format system disk and reinstalled everything...

[DavideBollo]

new update...after installing 3.1.3 patch...nothing works again...

[ShariF]

So frustrating. Did you ever get arcpy to work? I'm getting the same error when I use regular or cloned environment in PyCharm. 

[DavideBollo]

now I'm with ArcGIS Pro 3.2.1, win10.
after serveral attemps, formatting my machine several times, I discovered a conflict with an electronic signature software.

if I install the 64bit version of this software, the arcpy libraries outside of ArcGIS no longer work.

maybe you also have software that conflicts with the libraries.