update check (-U) is failing ("can't find the current version. Please try again later.", "certificate verify failed")

[bughit]

Checklist

• I'm reporting a broken site support issue
• I've verified that I'm running youtube-dl version 2020.05.29
• I've checked that all provided URLs are alive and playable in a browser
• I've checked that all URLs and arguments with special characters are properly quoted or escaped
• I've searched the bugtracker for similar bug reports including closed ones
• I've read bugs section in FAQ

Verbose log

[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-U', '--verbose']
[debug] Encodings: locale cp1252, fs mbcs, out cp437, pref cp1252
[debug] youtube-dl version 2020.05.29
[debug] Python version 3.4.4 (CPython) - Windows-7-6.1.7601-SP1
[debug] exe versions: ffmpeg 4.2.1, ffprobe 4.2.1
[debug] Proxy map: {}
Traceback (most recent call last):
  File "C:\Python\Python34\lib\urllib\request.py", line 1183, in do_open
  File "C:\Python\Python34\lib\http\client.py", line 1137, in request
  File "C:\Python\Python34\lib\http\client.py", line 1182, in _send_request
  File "C:\Python\Python34\lib\http\client.py", line 1133, in endheaders
  File "C:\Python\Python34\lib\http\client.py", line 963, in _send_output
  File "C:\Python\Python34\lib\http\client.py", line 898, in send
  File "C:\Python\Python34\lib\http\client.py", line 1287, in connect
  File "C:\Python\Python34\lib\ssl.py", line 362, in wrap_socket
  File "C:\Python\Python34\lib\ssl.py", line 580, in __init__
  File "C:\Python\Python34\lib\ssl.py", line 807, in do_handshake
ssl.SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:600)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpxtvjzx45\build\youtube_dl\update.py", line 46, in update_self
  File "C:\Python\Python34\lib\urllib\request.py", line 464, in open
  File "C:\Python\Python34\lib\urllib\request.py", line 482, in _open
  File "C:\Python\Python34\lib\urllib\request.py", line 442, in _call_chain
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpxtvjzx45\build\youtube_dl\utils.py", line 2736, in https_open
  File "C:\Python\Python34\lib\urllib\request.py", line 1185, in do_open
urllib.error.URLError: <urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:600)>

ERROR: can't find the current version. Please try again later.

Description

update check (youtube-dl -U --verbose) is failing

[bughit]

@dstftw What is the original issue? I did not find one

[emolatur]

youtube-dl -U --no-check-certificate

resolved the issue for me.

[adams-family]

Is it safe to download youtube-dl without a certificate? It could be a man-in-the-middle attack.

[emolatur]

Given how long this issue has existed, it is likely that such an attack would have been detected and corrected by now.

[ringofyre]

Can confirm.

# youtube-dl.exe -U ERROR: can't find the current version. Please try again later.

emolatur's switch also worked for me.

[ViperMaul]

I have the same problem. This is a recent problem since I have updated successfully earlier this year.
[debug] youtube-dl version 2020.05.08
[debug] Python version 3.4.4 (CPython) - Windows-10-10.0.18362

Thanks to @emolatur I was able to update using the youtube-dl -U --no-check-certificate

I am surprised the each of the developers cannot reproduce this. I wonder why.

Reference: #25541