Keep getting Failed to resolve 'fc.yahoo.com' or BTC-BTC or BTC-USD possibly delisted; no price data found

[ronsonntag54]

Describe bug

Get the following error when requesting historical data for BTC-USD (also tried BTC and BTC-BTC):

D:\Documents\BTC>python "Test YFinance.py"
0.2.51
Failed to get ticker 'BTC-BTC' reason: HTTPSConnectionPool(host='fc.yahoo.com', port=443): Max retries exceeded with url: / (Caused by NameResolutionError("<urllib3.connection.HTTPSConnection object at 0x0000013E6D8B6900>: Failed to resolve 'fc.yahoo.com' ([Errno 11004] getaddrinfo failed)"))
$BTC-BTC: possibly delisted; no price data found (period=1mo)

Simple code that reproduces your problem

import yfinance as yf
print(yf.version)

Fetch historical market data for the last 30 days

StockInfo = yf.Ticker('BTC-BTC')
historical_data = StockInfo.history(period="1mo")

Debug log

D:\Documents\BTC>python "Test YFinance.py"
0.2.51
DEBUG Entering history()
DEBUG Entering _fetch_ticker_tz()
DEBUG Entering get()
DEBUG Entering _make_request()
DEBUG url=https://query2.finance.yahoo.com/v8/finance/chart/BTC-BTC
DEBUG params=frozendict.frozendict({'range': '1d', 'interval': '1d'})
DEBUG Entering _get_cookie_and_crumb()
DEBUG cookie_mode = 'basic'
DEBUG Entering _get_cookie_and_crumb_basic()
ERROR Failed to get ticker 'BTC-BTC' reason: HTTPSConnectionPool(host='fc.yahoo.com', port=443): Max retries exceeded with url: / (Caused by NameResolutionError("<urllib3.connection.HTTPSConnection object at 0x000002414C5B6900>: Failed to resolve 'fc.yahoo.com' ([Errno 11004] getaddrinfo failed)"))
DEBUG Exiting _fetch_ticker_tz()
DEBUG Entering history()
DEBUG BTC-BTC: Yahoo GET parameters: {'range': '1mo', 'interval': '1d', 'includePrePost': False, 'events': 'div,splits,capitalGains'}
DEBUG Entering get()
DEBUG Entering _make_request()
DEBUG url=https://query2.finance.yahoo.com/v8/finance/chart/BTC-BTC
DEBUG params={'range': '1mo', 'interval': '1d', 'includePrePost': False, 'events': 'div,splits,capitalGains'}
DEBUG Entering _get_cookie_and_crumb()
DEBUG cookie_mode = 'basic'
DEBUG Entering _get_cookie_and_crumb_basic()
ERROR $BTC-BTC: possibly delisted; no price data found (period=1mo)
DEBUG Exiting history()
DEBUG Exiting history()

Bad data proof

No response

yfinance version

0.2.51

Python version

3.13.0

Operating system

Windows 10 Pro - fully updated

[oluca]

I get the same error for stock tickers as well

UPDATE 8. Jan 2025: Works again for the stock tickers