diff --git a/src/corelib/text/qlocale.cpp b/src/corelib/text/qlocale.cpp
index d7fb3a8d6ba..4f5b5452648 100644
--- a/src/corelib/text/qlocale.cpp
+++ b/src/corelib/text/qlocale.cpp
@@ -374,15 +374,17 @@ QLocaleId QLocaleId::withLikelySubtagsAdded() const noexcept
             return value;
         }
     }
-    if (matchesAll()) { // Skipped all of the above.
-        // CLDR has no match-all at v37, but might get one some day ...
-        pairs = std::lower_bound(pairs, afterPairs, sought);
-        if (pairs < afterPairs) {
-            // All other keys are < match-all.
-            Q_ASSERT(pairs + 1 == afterPairs);
-            Q_ASSERT(pairs->key.matchesAll());
-            return pairs->value;
-        }
+    // Finally, fall back to the match-all rule (if there is one):
+    pairs = afterPairs - 1; // All other keys are < match-all.
+    if (pairs->key.matchesAll()) {
+        QLocaleId value = pairs->value;
+        if (language_id)
+            value.language_id = language_id;
+        if (territory_id)
+            value.territory_id = territory_id;
+        if (script_id)
+            value.script_id = script_id;
+        return value;
     }
     return *this;
 }
@@ -4899,6 +4901,13 @@ QStringList QLocale::uiLanguages(TagSeparator separator) const
     }
     for (qsizetype i = localeIds.size(); i-- > 0; ) {
         QLocaleId id = localeIds.at(i);
+        if (id.language_id == C) {
+            // Attempt no likely sub-tag amendments to C:
+            const QString name = QString::fromLatin1(id.name(sep));
+            if (!uiLanguages.contains(name))
+                uiLanguages.append(name);
+            continue;
+        }
         qsizetype j;
         QByteArray prior;
         if (isSystem && i < uiLanguages.size()) {
@@ -4907,10 +4916,6 @@ QStringList QLocale::uiLanguages(TagSeparator separator) const
             prior = uiLanguages.at(i).toLatin1();
             // Insert just after the entry we're supplementing:
             j = i + 1;
-        } else if (id.language_id == C) {
-            // Attempt no likely sub-tag amendments to C:
-            uiLanguages.append(QString::fromLatin1(id.name(sep)));
-            continue;
         } else {
             // Plain locale or empty system uiLanguages; just append.
             prior = id.name(sep);
diff --git a/src/corelib/text/qlocale_data_p.h b/src/corelib/text/qlocale_data_p.h
index 24d022c89b2..a61240beca5 100644
--- a/src/corelib/text/qlocale_data_p.h
+++ b/src/corelib/text/qlocale_data_p.h
@@ -80,7 +80,7 @@ struct LanguageCodeEntry {
 // GENERATED PART STARTS HERE
 
 /*
-    This part of the file was generated on 2024-05-31 from the
+    This part of the file was generated on 2024-12-02 from the
     Common Locale Data Repository v45
 
     http://www.unicode.org/cldr/
@@ -1051,7 +1051,8 @@ static inline constexpr QLocaleId likely_subtags[] = {
     {   0, 138,   0 }, { 302, 138, 227 }, // und_Ugar -> uga_Ugar_SY
     {   0, 139,   0 }, { 308, 139, 134 }, // und_Vaii -> vai_Vaii_LR
     {   0, 141,   0 }, { 255, 141,  50 }, // und_Yiii -> ii_Yiii_CN
-    {   0, 142,   0 }, { 339, 142, 161 }  // und_Rohg -> rhg_Rohg_MM
+    {   0, 142,   0 }, { 339, 142, 161 }, // und_Rohg -> rhg_Rohg_MM
+    {   0,   0,   0 }, {  75,  66, 248 }  // und -> en_Latn_US
 };
 
 static inline constexpr quint16 locale_index[] = {
diff --git a/tests/auto/corelib/text/qlocale/tst_qlocale.cpp b/tests/auto/corelib/text/qlocale/tst_qlocale.cpp
index cf46889b39f..a358ed1343c 100644
--- a/tests/auto/corelib/text/qlocale/tst_qlocale.cpp
+++ b/tests/auto/corelib/text/qlocale/tst_qlocale.cpp
@@ -419,7 +419,7 @@ void tst_QLocale::defaulted_ctor()
         QCOMPARE(l.territory(), exp_country); \
     } while (false)
 
-    TEST_CTOR(AnyLanguage, AnyTerritory, default_lang, default_country);
+    TEST_CTOR(AnyLanguage, AnyTerritory, QLocale::English, QLocale::UnitedStates);
     TEST_CTOR(C, AnyTerritory, QLocale::C, QLocale::AnyTerritory);
     TEST_CTOR(Aymara, AnyTerritory, default_lang, default_country);
     TEST_CTOR(Aymara, France, default_lang, default_country);
diff --git a/util/locale_database/cldr.py b/util/locale_database/cldr.py
index 5bb1407b1ee..d4c9133d985 100644
--- a/util/locale_database/cldr.py
+++ b/util/locale_database/cldr.py
@@ -59,8 +59,6 @@ class CldrReader (object):
                 else:
                     self.grumble(f'Skipping likelySubtag "{got}" -> "{use}" ({e})\n')
                 continue
-            if all(code.startswith('Any') and code[3].isupper() for code in have[:-1]):
-                continue
 
             give = (give[0],
                     # Substitute according to http://www.unicode.org/reports/tr35/#Likely_Subtags
diff --git a/util/locale_database/qlocalexml.py b/util/locale_database/qlocalexml.py
index 9ad87855ca1..d4c13c921ff 100644
--- a/util/locale_database/qlocalexml.py
+++ b/util/locale_database/qlocalexml.py
@@ -151,7 +151,9 @@ class QLocaleXmlReader (object):
         sub-tags mapping says language's default locale uses the given
         script and territory."""
         for have, give in self.__likely:
-            if have[1:] == ('AnyScript', 'AnyTerritory') and give[2] != 'AnyTerritory':
+            if (have[0] != 'AnyLanguage'
+                    and have[1:] == ('AnyScript', 'AnyTerritory')
+                    and give[2] != 'AnyTerritory'):
                 assert have[0] == give[0], (have, give)
                 yield ((self.__langByName[give[0]][0],
                         self.__textByName[give[1]][0]),