diff --git a/include/boost/interprocess/detail/intermodule_singleton_common.hpp b/include/boost/interprocess/detail/intermodule_singleton_common.hpp
index f5306f6..1bb4f01 100644
--- a/include/boost/interprocess/detail/intermodule_singleton_common.hpp
+++ b/include/boost/interprocess/detail/intermodule_singleton_common.hpp
@@ -47,8 +47,10 @@ inline void get_pid_creation_time_str(std::string &s)
 {
    std::stringstream stream;
    stream << get_current_process_id() << '_';
-   stream.precision(6);
-   stream << std::fixed << get_current_process_creation_time();
+   const unsigned long long total_microsecs = get_current_process_creation_time();
+   const unsigned long secs  = static_cast<unsigned long>(total_microsecs/1000000ul);
+   const unsigned long usecs = static_cast<unsigned long>(total_microsecs%1000000ul);
+   stream << secs << '.' << usecs;
    s = stream.str();
 }
 
diff --git a/include/boost/interprocess/detail/os_thread_functions.hpp b/include/boost/interprocess/detail/os_thread_functions.hpp
index deb8eef..cb0b59a 100644
--- a/include/boost/interprocess/detail/os_thread_functions.hpp
+++ b/include/boost/interprocess/detail/os_thread_functions.hpp
@@ -220,17 +220,18 @@ inline OS_systemwide_thread_id_t get_invalid_systemwide_thread_id()
    return get_invalid_thread_id();
 }
 
-inline long double get_current_process_creation_time()
+inline unsigned long long get_current_process_creation_time()
 {
    winapi::interprocess_filetime CreationTime, ExitTime, KernelTime, UserTime;
 
    winapi::get_process_times
       ( winapi::get_current_process(), &CreationTime, &ExitTime, &KernelTime, &UserTime);
 
-   typedef long double ldouble_t;
-   const ldouble_t resolution = (100.0l/1000000000.0l);
-   return CreationTime.dwHighDateTime*(ldouble_t(1u<<31u)*2.0l*resolution) +
-              CreationTime.dwLowDateTime*resolution;
+   unsigned long long microsecs = CreationTime.dwHighDateTime;
+   microsecs <<= 32u;
+   microsecs |= CreationTime.dwLowDateTime;
+   microsecs /= 10u;
+   return microsecs;
 }
 
 inline unsigned int get_num_cores()
@@ -476,8 +477,8 @@ inline OS_systemwide_thread_id_t get_invalid_systemwide_thread_id()
    return OS_systemwide_thread_id_t(get_invalid_process_id(), get_invalid_thread_id());
 }
 
-inline long double get_current_process_creation_time()
-{ return 0.0L; }
+inline unsigned long long get_current_process_creation_time()
+{ return 0u; }
 
 inline unsigned int get_num_cores()
 {