diff --git a/configure.ac b/configure.ac
--- a/configure.ac
+++ b/configure.ac
@@ -825,21 +825,6 @@
   ]
 )
 
-AC_MSG_CHECKING([for thread_local support])
-case $host in
-  i?86-*mingw*)
-    # Disable thread_local for mingw on 32 bits targets. See discussion in:
-    # https://github.com/bitcoin/bitcoin/pull/15849/files#r280537603
-    # and bug report:
-    # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83562
-    AC_MSG_RESULT(no)
-    ;;
-  *)
-    AC_DEFINE(HAVE_THREAD_LOCAL,1,[Define if thread_local is supported.])
-    AC_MSG_RESULT(yes)
-    ;;
-esac
-
 # Check for different ways of gathering OS randomness
 AC_MSG_CHECKING(for Linux getrandom syscall)
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <unistd.h>
diff --git a/src/config/CMakeLists.txt b/src/config/CMakeLists.txt
--- a/src/config/CMakeLists.txt
+++ b/src/config/CMakeLists.txt
@@ -201,16 +201,6 @@
 set(CMAKE_REQUIRED_LIBRARIES ${OPENSSL_CRYPTO_LIBRARY})
 check_symbol_exists(EVP_MD_CTX_new "openssl/evp.h" HAVE_DECL_EVP_MD_CTX_NEW)
 
-# Disable thread_local for mingw on 32 bits targets. See discussion in:
-# https://github.com/bitcoin/bitcoin/pull/15849/files#r280537603
-# and bug report:
-# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83562
-if(NOT CMAKE_C_COMPILER_TARGET MATCHES "i[3-6]86-.*mingw.*")
-	set(HAVE_THREAD_LOCAL 1)
-else()
-	message(STATUS "Disabled thread_local for this platform")
-endif()
-
 # Activate wallet
 set(ENABLE_WALLET ${BUILD_BITCOIN_WALLET})
 
diff --git a/src/config/bitcoin-config.h.cmake.in b/src/config/bitcoin-config.h.cmake.in
--- a/src/config/bitcoin-config.h.cmake.in
+++ b/src/config/bitcoin-config.h.cmake.in
@@ -60,8 +60,6 @@
 
 #cmakedefine HAVE_DECL_EVP_MD_CTX_NEW 1
 
-#cmakedefine HAVE_THREAD_LOCAL 1
-
 #define FDELT_TYPE ${FDELT_TYPE}
 
 #cmakedefine ENABLE_BIP70 1
diff --git a/src/test/util_threadnames_tests.cpp b/src/test/util_threadnames_tests.cpp
--- a/src/test/util_threadnames_tests.cpp
+++ b/src/test/util_threadnames_tests.cpp
@@ -55,11 +55,6 @@
 BOOST_AUTO_TEST_CASE(util_threadnames_test_rename_threaded) {
     BOOST_CHECK_EQUAL(util::ThreadGetInternalName(), "");
 
-#if !defined(HAVE_THREAD_LOCAL)
-    // This test doesn't apply to platforms where we don't have thread_local.
-    return;
-#endif
-
     std::set<std::string> names = RenameEnMasse(100);
 
     BOOST_CHECK_EQUAL(names.size(), 100);
diff --git a/src/util/threadnames.cpp b/src/util/threadnames.cpp
--- a/src/util/threadnames.cpp
+++ b/src/util/threadnames.cpp
@@ -35,10 +35,6 @@
 #endif
 }
 
-// If we have thread_local, just keep thread ID and name in a thread_local
-// global.
-#if defined(HAVE_THREAD_LOCAL)
-
 static thread_local std::string g_thread_name;
 const std::string &util::ThreadGetInternalName() {
     return g_thread_name;
@@ -49,17 +45,6 @@
     g_thread_name = std::move(name);
 }
 
-// Without thread_local available, don't handle internal name at all.
-#else
-
-static const std::string empty_string;
-const std::string &util::ThreadGetInternalName() {
-    return empty_string;
-}
-static void SetInternalName(std::string name) {}
-
-#endif // defined(HAVE_THREAD_LOCAL)
-
 void util::ThreadRename(std::string &&name) {
     SetThreadName(("b-" + name).c_str());
     SetInternalName(std::move(name));