How to fix Anaconda3 Jupyter Notebook kernel error?

Question

for adding new environment I followed some YouTube video to set everything bit my new environment didn't work so deleted the environment but after this my base environment is also stop working and kernel showing this error. pls help .

Traceback (most recent call last):
  File "C:\Users\RAHUL\AppData\Roaming\Python\Python38\site-packages\tornado\web.py", line 1704, in _execute
    result = await result
  File "C:\Users\RAHUL\AppData\Roaming\Python\Python38\site-packages\tornado\gen.py", line 769, in run
    yielded = self.gen.throw(*exc_info)  # type: ignore
  File "C:\Users\RAHUL\anaconda3\lib\site-packages\notebook\services\sessions\handlers.py", line 69, in post
    model = yield maybe_future(
  File "C:\Users\RAHUL\AppData\Roaming\Python\Python38\site-packages\tornado\gen.py", line 762, in run
    value = future.result()
  File "C:\Users\RAHUL\AppData\Roaming\Python\Python38\site-packages\tornado\gen.py", line 769, in run
    yielded = self.gen.throw(*exc_info)  # type: ignore
  File "C:\Users\RAHUL\anaconda3\lib\site-packages\notebook\services\sessions\sessionmanager.py", line 88, in create_session
    kernel_id = yield self.start_kernel_for_session(session_id, path, name, type, kernel_name)
  File "C:\Users\RAHUL\AppData\Roaming\Python\Python38\site-packages\tornado\gen.py", line 762, in run
    value = future.result()
  File "C:\Users\RAHUL\AppData\Roaming\Python\Python38\site-packages\tornado\gen.py", line 769, in run
    yielded = self.gen.throw(*exc_info)  # type: ignore
  File "C:\Users\RAHUL\anaconda3\lib\site-packages\notebook\services\sessions\sessionmanager.py", line 100, in start_kernel_for_session
    kernel_id = yield maybe_future(
  File "C:\Users\RAHUL\AppData\Roaming\Python\Python38\site-packages\tornado\gen.py", line 762, in run
    value = future.result()
  File "C:\Users\RAHUL\anaconda3\lib\site-packages\notebook\services\kernels\kernelmanager.py", line 176, in start_kernel
    kernel_id = await maybe_future(self.pinned_superclass.start_kernel(self, **kwargs))
  File "C:\Users\RAHUL\AppData\Roaming\Python\Python38\site-packages\jupyter_client\multikernelmanager.py", line 186, in start_kernel
    km.start_kernel(**kwargs)
  File "C:\Users\RAHUL\AppData\Roaming\Python\Python38\site-packages\jupyter_client\manager.py", line 337, in start_kernel
    kernel_cmd, kw = self.pre_start_kernel(**kw)
  File "C:\Users\RAHUL\AppData\Roaming\Python\Python38\site-packages\jupyter_client\manager.py", line 286, in pre_start_kernel
    self.write_connection_file()
  File "C:\Users\RAHUL\AppData\Roaming\Python\Python38\site-packages\jupyter_client\connect.py", line 466, in write_connection_file
    self.connection_file, cfg = write_connection_file(self.connection_file,
  File "C:\Users\RAHUL\AppData\Roaming\Python\Python38\site-packages\jupyter_client\connect.py", line 136, in write_connection_file
    with secure_write(fname) as f:
  File "C:\Users\RAHUL\anaconda3\lib\contextlib.py", line 113, in __enter__
    return next(self.gen)
  File "C:\Users\RAHUL\AppData\Roaming\Python\Python38\site-packages\jupyter_core\paths.py", line 461, in secure_write
    win32_restrict_file_to_user(fname)
  File "C:\Users\RAHUL\AppData\Roaming\Python\Python38\site-packages\jupyter_core\paths.py", line 387, in win32_restrict_file_to_user
    import win32api
ImportError: DLL load failed while importing win32api: The specified procedure could not be found.

Have you checked other questions with the similar error message? E.g. [this question](https://stackoverflow.com/questions/58612306/how-to-fix-importerror-dll-load-failed-while-importing-win32api) or [that one](https://stackoverflow.com/questions/59277475/dll-load-failed-the-specified-procedure-could-not-be-found-win32api-sys-os). — Tsyvarev, Jun 24 '21 at 19:34

How to fix Anaconda3 Jupyter Notebook kernel error?

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