diff --git a/conan/profiles/default b/conan/profiles/default
index cde59f7f3b..fd977f3dcc 100644
--- a/conan/profiles/default
+++ b/conan/profiles/default
@@ -23,3 +23,15 @@ compiler.libcxx={{detect_api.detect_libcxx(compiler, version, compiler_exe)}}
 {% if compiler == "gcc" and compiler_version < 13 %}
 tools.build:cxxflags+=['-Wno-restrict']
 {% endif %}
+{% if os == "Windows" %}
+# opentelemetry-cpp's recipe removes the `shared` option on Windows and never
+# sets BUILD_SHARED_LIBS, so its upstream CMake defaults the protobuf-generated
+# `opentelemetry_proto` target to a DLL (opentelemetry_proto.dll). The rest of
+# the project links statically and nothing deploys that DLL next to the
+# executables, so the telemetry unit test fails to start with
+# STATUS_DLL_NOT_FOUND (0xC0000135). Force the dependency to build fully static
+# so no runtime DLL is produced. The conf is folded into the package id so a
+# fresh static binary is built instead of reusing a previously cached one.
+opentelemetry-cpp/*:tools.cmake.cmaketoolchain:extra_variables={"BUILD_SHARED_LIBS": "OFF"}
+opentelemetry-cpp/*:tools.info.package_id:confs+=["tools.cmake.cmaketoolchain:extra_variables"]
+{% endif %}
diff --git a/src/libxrpl/telemetry/SpanGuard.cpp b/src/libxrpl/telemetry/SpanGuard.cpp
index c504b9f905..358132fec8 100644
--- a/src/libxrpl/telemetry/SpanGuard.cpp
+++ b/src/libxrpl/telemetry/SpanGuard.cpp
@@ -48,9 +48,11 @@
 #include <exception>
 #include <initializer_list>
 #include <memory>
+#include <string>
 #include <string_view>
 #include <typeinfo>
 #include <utility>
+#include <vector>
 
 namespace xrpl::telemetry {