diff --git a/EgtLock.vcxproj b/EgtLock.vcxproj
index 8e98edc..92bc606 100644
--- a/EgtLock.vcxproj
+++ b/EgtLock.vcxproj
@@ -35,7 +35,7 @@
     <ConfigurationType>StaticLibrary</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
     <CharacterSet>Unicode</CharacterSet>
-    <PlatformToolset>v141</PlatformToolset>
+    <PlatformToolset>v142</PlatformToolset>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>StaticLibrary</ConfigurationType>
@@ -49,7 +49,7 @@
     <UseDebugLibraries>false</UseDebugLibraries>
     <WholeProgramOptimization>false</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
-    <PlatformToolset>v141</PlatformToolset>
+    <PlatformToolset>v142</PlatformToolset>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
   <ImportGroup Label="ExtensionSettings">
diff --git a/KeyProc.cpp b/KeyProc.cpp
index f37a7bb..bd29b9c 100644
--- a/KeyProc.cpp
+++ b/KeyProc.cpp
@@ -1,7 +1,7 @@
 //----------------------------------------------------------------------------
 //  EgalTech 2014-2020
 //----------------------------------------------------------------------------
-// File : KeyProc.cpp         Data : 31.01.20          Versione : 2.2a1
+// File : KeyProc.cpp         Data : 03.08.20          Versione : 2.2h1
 // Contenuto : Funzioni per la gestione della chiave.
 //
 //
@@ -27,7 +27,7 @@
 using namespace std ;
 
 //----------------------------------------------------------------------------
-static const int MIN_DAYS = 18290 ;  // giorni al 29/01/2020  dal 1/1/1970
+static const int MIN_DAYS = 18477 ;  // giorni al 03/08/2020  dal 1/1/1970
 static const int N_STEP = 7 ;
 
 //----------------------------------------------------------------------------