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ssl.SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:852)
Hi everyone,
I am getting the following error:
C:\Python36\Dartfish\Scripts\python.exe C:/Workspace/COC-Dartfish/Dartfish/Dropbox_Download.py SBL
Traceback (most recent call last):
File "C:\Python36\Dartfish\lib\site-packages\urllib3\connectionpool.py", line 677, in urlopen
chunked=chunked,
File "C:\Python36\Dartfish\lib\site-packages\urllib3\connectionpool.py", line 381, in _make_request
self._validate_conn(conn)
File "C:\Python36\Dartfish\lib\site-packages\urllib3\connectionpool.py", line 976, in _validate_conn
conn.connect()
File "C:\Python36\Dartfish\lib\site-packages\urllib3\connection.py", line 370, in connect
ssl_context=context,
File "C:\Python36\Dartfish\lib\site-packages\urllib3\util\ssl_.py", line 377, in ssl_wrap_socket
return context.wrap_socket(sock, server_hostname=server_hostname)
File "C:\Program Files\Python36\lib\ssl.py", line 407, in wrap_socket
_context=self, _session=session)
File "C:\Program Files\Python36\lib\ssl.py", line 817, in __init__
self.do_handshake()
File "C:\Program Files\Python36\lib\ssl.py", line 1077, in do_handshake
self._sslobj.do_handshake()
File "C:\Program Files\Python36\lib\ssl.py", line 689, in do_handshake
self._sslobj.do_handshake()
ssl.SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:852)
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:\Python36\Dartfish\lib\site-packages\requests\adapters.py", line 449, in send
timeout=timeout
File "C:\Python36\Dartfish\lib\site-packages\urllib3\connectionpool.py", line 725, in urlopen
method, url, error=e, _pool=self, _stacktrace=sys.exc_info()[2]
File "C:\Python36\Dartfish\lib\site-packages\urllib3\util\retry.py", line 439, in increment
raise MaxRetryError(_pool, url, error or ResponseError(cause))
urllib3.exceptions.MaxRetryError: HTTPSConnectionPool(host='content.dropboxapi.com', port=443): Max retries exceeded with url: /2/files/download (Caused by SSLError(SSLError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:852)'),))
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "C:/Workspace/COC-Dartfish/Dartfish/Dropbox_Download.py", line 95, in <module>
dd = DropBoxDownload(args.sportscode)
File "C:/Workspace/COC-Dartfish/Dartfish/Dropbox_Download.py", line 39, in __init__
self.process_entries()
File "C:/Workspace/COC-Dartfish/Dartfish/Dropbox_Download.py", line 84, in process_entries
dbx.files_download_to_file(local_file, entry.path_lower)
File "C:\Python36\Dartfish\lib\site-packages\dropbox\base.py", line 1238, in files_download_to_file
None,
File "C:\Python36\Dartfish\lib\site-packages\dropbox\dropbox.py", line 274, in request
timeout=timeout)
File "C:\Python36\Dartfish\lib\site-packages\dropbox\dropbox.py", line 365, in request_json_string_with_retry
timeout=timeout)
File "C:\Python36\Dartfish\lib\site-packages\dropbox\dropbox.py", line 449, in request_json_string
timeout=timeout,
File "C:\Python36\Dartfish\lib\site-packages\requests\sessions.py", line 578, in post
return self.request('POST', url, data=data, json=json, **kwargs)
File "C:\Python36\Dartfish\lib\site-packages\requests\sessions.py", line 530, in request
resp = self.send(prep, **send_kwargs)
File "C:\Python36\Dartfish\lib\site-packages\requests\sessions.py", line 643, in send
r = adapter.send(request, **kwargs)
File "C:\Python36\Dartfish\lib\site-packages\requests\adapters.py", line 514, in send
raise SSLError(e, request=request)
requests.exceptions.SSLError: HTTPSConnectionPool(host='content.dropboxapi.com', port=443): Max retries exceeded with url: /2/files/download (Caused by SSLError(SSLError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:852)'),))
Process finished with exit code 1
To give you context, I am using a python library to download some files, this seemed to be working however I am not sure when it stopped working. However, I just tried this program on my windows 10 machine, and also a spare Linux machine with the same error.
I have tried the different solutions provided, but none of them seemed to have worked. If someone can help me out, that'd be really awesome. Appreciate your help.
Running:
dropbox 10.2.0
Python 3
That shouldn't be the issue here. The files_download_to_file method does allow you to download files from shared folders. Also, the error you're getting indicates an issue establishing the secure TLS connection with the Dropbox API servers, which occurs before the Dropbox API itself validates the call or its parameters anyway.
It should say 3.6 instead of Python 3.
For context here's the code I am running
dbx = dropbox.Dropbox("MY TOKEN!!") result = dbx.files_list_folder("", recursive=True) while result.has_more: result = dbx.files_list_folder_continue(result.cursor) for entry in result.entries:- Greg-DB
Dropbox Staff
I see from the stack trace that this error is occurring during files_download_to_file. I just gave that, as well as the other methods you included in the code snippet, a try with Python 3.6 and v10.2.0 of the Dropbox Python library on Windows though and it worked fine for me.
The error you're getting would seem to indicate that the Dropbox API servers aren't being served with a valid certificate, however that is not the case.
Is there anything on your network connection, e.g., a proxy, firewall, anti-virus, or other such software that may be interfering with your connection to the Dropbox API servers? For the files_download_to_file method in particular, it would be to the content.dropboxapi.com host.
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