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Editorial Team
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Asked: 2026-06-11T23:28:28+00:00

Got OpenSSL (Win32) here http://slproweb.com/products/Win32OpenSSL.html Downloaded and compiled libCURL wit following flags USE_SSLEAY; USE_OPENSSL;

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  1. Got OpenSSL (Win32) here http://slproweb.com/products/Win32OpenSSL.html
  2. Downloaded and compiled libCURL wit following flags
    • USE_SSLEAY;
    • USE_OPENSSL;
    • CURL_DISABLE_LDAP;
  3. Included headers and libs in my project

… and now i get this ugly error.

1>libcurl.lib(ssluse.obj) : error LNK2001: Nicht aufgelöstes externes Symbol "_ERR_remove_thread_state".
1>C:\[...].exe : fatal error LNK1120: 1 nicht aufgelöste externe Verweise.

I guess this should remind me of a missing lib, but i think there are none. Google results dont help me any further. Any ideas?

Greets Manuel

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1 Answer

  1. Editorial Team

    This looks like a broken openssl package to me. ERR_remove_thread_state() was introduced in 1.0.0 and the libcurl source code checks for the version and only uses that function on a new enough openssl… You can easily see that yourself in curl/lib/ssluse.c

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