[gbm]

Originally Posted by Korben Dallas

Since January (approximately) the functionality of downloading metadata ceased to work properly. Every attempt to download any metadata fails invariably—see following log:

Spoiler:

calibre, version 3.21.0
ERROR: No matches found: <p>Failed to find any books that match your search. Try making the search <b>less specific</b>. For example, use only the author's last name and a single distinctive word from the title.<p>To see the full log, click "Show details".

Running identify query with parameters:
{u'authors': [u'Hans Dominik'], u'identifiers': {u'uri': u'http://gutenberg.spiegel.de/buch/atlantis-8709/1'}, u'title': u'Atlantis', u'timeout': 30}
Using plugins: Google (1, 0, 0), Amazon.com (1, 2, 1), Overdrive (1, 0, 0)
The log from individual plugins is below

****************************** Amazon.com (1, 2, 1) ******************************
Found 0 results
Downloading from Amazon.com took 0.743000030518
User-agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:51.0) Gecko/20100101 Firefox/51.0
Server: auto
Making google query: https://www.google.com/search?q=Atla...Awww.amazon.de
Plugin Amazon.com failed
Traceback (most recent call last):
File "site-packages\calibre\ebooks\metadata\sources\identify. py", line 48, in run
File "site-packages\calibre\ebooks\metadata\sources\amazon.py ", line 1346, in identify
File "site-packages\calibre\ebooks\metadata\sources\amazon.py ", line 1282, in search_search_engine
File "site-packages\calibre\ebooks\metadata\sources\search_en gines.py", line 230, in google_search
File "site-packages\calibre\ebooks\metadata\sources\search_en gines.py", line 65, in query
File "site-packages\mechanize\_mechanize.py", line 239, in open_novisit
File "site-packages\mechanize\_mechanize.py", line 284, in _mech_open
File "site-packages\mechanize\_opener.py", line 195, in open
File "site-packages\mechanize\_urllib2_fork.py", line 352, in _open
File "site-packages\mechanize\_urllib2_fork.py", line 340, in _call_chain
File "site-packages\calibre\utils\browser.py", line 28, in https_open
File "site-packages\mechanize\_urllib2_fork.py", line 1160, in do_open
URLError: <urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:590)>

************************************************** ******************************

****************************** Google (1, 0, 0) ******************************
Found 0 results
Downloading from Google took 0.713000059128
Making query: https://books.google.com/books/feeds...max-results=20
Failed to make identify query: u'https://books.google.com/books/feeds/volumes?q=intitle%3AAtlantis%2Binauthor%3AHans+ina uthor%3ADominik&min-viewability=none&start-index=1&max-results=20'
Traceback (most recent call last):
File "site-packages\calibre\ebooks\metadata\sources\google.py ", line 362, in identify
File "site-packages\mechanize\_mechanize.py", line 239, in open_novisit
File "site-packages\mechanize\_mechanize.py", line 284, in _mech_open
File "site-packages\mechanize\_opener.py", line 195, in open
File "site-packages\mechanize\_urllib2_fork.py", line 352, in _open
File "site-packages\mechanize\_urllib2_fork.py", line 340, in _call_chain
File "site-packages\calibre\utils\browser.py", line 28, in https_open
File "site-packages\mechanize\_urllib2_fork.py", line 1160, in do_open
URLError: <urlopen error [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:590)>

************************************************** ******************************

****************************** Overdrive (1, 0, 0) ******************************
Found 0 results
Downloading from Overdrive took 1.93400001526
Initial query is Hans Dominik
Cross reference query is Atlantis

************************************************** ******************************
The identify phase took 2.01 seconds
The longest time (1.934000) was taken by: Overdrive
Merging results from different sources and finding earliest publication dates from the worldcat.org service
We have 0 merged results, merging took: 0.00 seconds

Calling the urls from the log via Firefox (59.0.2), Edge, and Internet Explorer (11.334.16299.0) results in valid pages, i.e. no error.

So now the question is:

• Why doesn't Calibre find the appropriate certificates?

Or put otherwise:

• Where should I put the required certificate files, and in which format?

or

• How can I prevent Calibre from trying to check the validity of these certificates? (As a last resort…)

Btw: My System:

• Windows 10 Pro 64bit (ver 1709 build 16299.334)
• Calibre 3.21 [64bit]
• no proxy settings found whatsoever

Do you have one of those "free coupon" tool bars installed? Better yet what is you home page? If it is Ask dot com, can you change it, if it is and you can not change it you need to run malwarebites.

bernie