diff --git a/sdk/lib/ucrt/inc/corecrt_internal_strtox.h b/sdk/lib/ucrt/inc/corecrt_internal_strtox.h
index 68293919858..102724dda7d 100644
--- a/sdk/lib/ucrt/inc/corecrt_internal_strtox.h
+++ b/sdk/lib/ucrt/inc/corecrt_internal_strtox.h
@@ -1329,7 +1329,7 @@ floating_point_parse_result __cdecl parse_floating_point_possible_nan(
     StoredState      stored_state
     ) throw()
 {
-    using char_type = CharacterSource::char_type;
+    using char_type = typename CharacterSource::char_type;
 
     auto restore_state = [&]()
     {
diff --git a/sdk/lib/ucrt/internal/win_policies.cpp b/sdk/lib/ucrt/internal/win_policies.cpp
index 55efd95f05c..be0a78accab 100644
--- a/sdk/lib/ucrt/internal/win_policies.cpp
+++ b/sdk/lib/ucrt/internal/win_policies.cpp
@@ -11,7 +11,7 @@
 template<typename TPolicy>
 static typename TPolicy::policy_type __cdecl get_win_policy(typename TPolicy::appmodel_policy_type defaultValue)
 {
-    TPolicy::appmodel_policy_type appmodelPolicy = defaultValue;
+    typename TPolicy::appmodel_policy_type appmodelPolicy = defaultValue;
 
     // Secure processes cannot load the appmodel DLL, so only attempt loading
     // policy information if this is not a secure process.
@@ -29,10 +29,10 @@ static typename TPolicy::policy_type __cdecl get_cached_win_policy(typename TPol
     static long state_cache = 0;
     if (long const cached_state = __crt_interlocked_read(&state_cache))
     {
-        return static_cast<TPolicy::policy_type>(cached_state);
+        return static_cast<typename TPolicy::policy_type>(cached_state);
     }
 
-    TPolicy::appmodel_policy_type appmodelPolicy = defaultValue;
+    typename TPolicy::appmodel_policy_type appmodelPolicy = defaultValue;
 
     // Secure processes cannot load the appmodel DLL, so only attempt loading
     // policy information if this is not a secure process.
@@ -41,7 +41,7 @@ static typename TPolicy::policy_type __cdecl get_cached_win_policy(typename TPol
         TPolicy::appmodel_get_policy(&appmodelPolicy);
     }
 
-    TPolicy::policy_type const policyValue = TPolicy::appmodel_policy_to_policy_type(appmodelPolicy);
+    typename TPolicy::policy_type const policyValue = TPolicy::appmodel_policy_to_policy_type(appmodelPolicy);
 
     long const cached_state = _InterlockedExchange(&state_cache, static_cast<long>(policyValue));
     if (cached_state)
diff --git a/sdk/lib/ucrt/string/strnlen.cpp b/sdk/lib/ucrt/string/strnlen.cpp
index 5465e0ff863..6cee4e85e0f 100644
--- a/sdk/lib/ucrt/string/strnlen.cpp
+++ b/sdk/lib/ucrt/string/strnlen.cpp
@@ -138,7 +138,7 @@ static __forceinline size_t __cdecl common_strnlen_c(
         // [2] Aligned Vector Loop (Middle)
         __crt_simd_cleanup_guard<Isa> const simd_cleanup;
 
-        traits::pack_type const zero = traits::get_zero_pack();
+        typename traits::pack_type const zero = traits::get_zero_pack();
 
         size_t const middle_and_suffix_count = maximum_count - prefix_count;
         size_t const suffix_count            = middle_and_suffix_count % traits::pack_size;
@@ -147,7 +147,7 @@ static __forceinline size_t __cdecl common_strnlen_c(
         Element const* const middle_last = it + middle_count;
         while (!last_reached<Mode>(it, middle_last))
         {
-            auto const element_it = reinterpret_cast<traits::pack_type const*>(it);
+            auto const element_it = reinterpret_cast<typename traits::pack_type const*>(it);
 
             bool const element_has_terminator = traits::compute_byte_mask(traits::compare_equals(*element_it, zero)) != 0;
             if (element_has_terminator)