diff --git a/api/OSUtils.cpp b/api/OSUtils.cpp
index c7b0d5b..683f551 100644
--- a/api/OSUtils.cpp
+++ b/api/OSUtils.cpp
@@ -1,5 +1,6 @@
 #include "OSUtils.h"
 
+struct IUnknown; // Workaround for "combaseapi.h(229): error C2187: syntax error: 'identifier' was unexpected here" when using /permissive-
 #include <ShlObj.h>
 
 #include <boost/filesystem.hpp>
diff --git a/libLicenseClient.vcxproj b/libLicenseClient.vcxproj
index 87d26e1..7842e96 100644
--- a/libLicenseClient.vcxproj
+++ b/libLicenseClient.vcxproj
@@ -15,7 +15,7 @@
     <ProjectGuid>{51345E59-83E5-4389-93A9-0131B40522B7}</ProjectGuid>
     <Keyword>Win32Proj</Keyword>
     <RootNamespace>libLicenseClient</RootNamespace>
-    <WindowsTargetPlatformVersion>10.0.16299.0</WindowsTargetPlatformVersion>
+    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
@@ -60,6 +60,7 @@
       <PreprocessorDefinitions>WIN32;_DEBUG;_LIB;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <ConformanceMode>true</ConformanceMode>
       <LanguageStandard>stdcpplatest</LanguageStandard>
+      <AdditionalOptions>/Zc:strictStrings- %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>
@@ -79,6 +80,7 @@
       <LanguageStandard>stdcpplatest</LanguageStandard>
       <CreateHotpatchableImage>false</CreateHotpatchableImage>
       <DebugInformationFormat>None</DebugInformationFormat>
+      <AdditionalOptions>/Zc:strictStrings- %(AdditionalOptions)</AdditionalOptions>
     </ClCompile>
     <Link>
       <SubSystem>Windows</SubSystem>
diff --git a/project-common.props b/project-common.props
index d764253..7b012c7 100644
--- a/project-common.props
+++ b/project-common.props
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ImportGroup Label="PropertySheets">
-    <Import Project="..\thirdparty\boost-1.66.0\boost.props" />
+    <Import Project="..\thirdparty\boost-1.67.0\boost.props" />
     <Import Project="..\thirdparty\curl-7.58.0\curl-static.props" />
     <Import Project="..\thirdparty\zlib-1.2.11\zlib-static.props" />
     <Import Project="..\thirdparty\libzip-1.4.0\libzip-static.props" />
diff --git a/src/HTTPClient.cpp b/src/HTTPClient.cpp
index f723318..0d5f131 100644
--- a/src/HTTPClient.cpp
+++ b/src/HTTPClient.cpp
@@ -1,5 +1,6 @@
 #include "HTTPClient.h"
 
+struct IUnknown; // Workaround for "combaseapi.h(229): error C2187: syntax error: 'identifier' was unexpected here" when using /permissive-
 #include <curl/curl.h>
 
 #include <memory>
diff --git a/src/LicenseClient.cpp b/src/LicenseClient.cpp
index e3a4ad6..8e21020 100644
--- a/src/LicenseClient.cpp
+++ b/src/LicenseClient.cpp
@@ -52,7 +52,7 @@ namespace
 {
 
 static const std::string productId = "coc";
-static const std::string serverPath = "http://localhost:3000/api/v1";
+static const std::string serverPath = "https://license.apis.sk/api/v1";
 
 static const uint32_t initializationVectorSize = AES::BLOCKSIZE;
 static const uint32_t macTagSize = 16;
@@ -386,7 +386,7 @@ std::vector<ModuleUpdate> LicenseClient::checkForUpdates(HTTPClient & httpClient
         // Something changes - Server sent us updated licenseFile
         {
             const auto& licenseData = checkUpdatesResponse.licenseFile.value();
-            std::ofstream os(m_licenseFile);
+            std::ofstream os(m_licenseFile, std::ofstream::binary);
             os.write(licenseData.data(), licenseData.size());
         }
         loadActivationData();
diff --git a/src/SystemParamsProvider_win.cpp b/src/SystemParamsProvider_win.cpp
index 356e796..39c6ac6 100644
--- a/src/SystemParamsProvider_win.cpp
+++ b/src/SystemParamsProvider_win.cpp
@@ -1,5 +1,6 @@
 #include "SystemParamsProvider_win.h"
 
+struct IUnknown; // Workaround for "combaseapi.h(229): error C2187: syntax error: 'identifier' was unexpected here" when using /permissive-
 #define _WIN32_DCOM
 #include <comdef.h>
 #include <Wbemidl.h>
diff --git a/test/libLicenseClientTest.vcxproj b/test/libLicenseClientTest.vcxproj
index f09632d..3b5e91a 100644
--- a/test/libLicenseClientTest.vcxproj
+++ b/test/libLicenseClientTest.vcxproj
@@ -23,7 +23,7 @@
     <ProjectGuid>{E781AE2E-4A02-4D63-9CAC-1AEBACD9CD73}</ProjectGuid>
     <Keyword>Win32Proj</Keyword>
     <RootNamespace>libLicenseClientTest</RootNamespace>
-    <WindowsTargetPlatformVersion>10.0.16299.0</WindowsTargetPlatformVersion>
+    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
@@ -61,13 +61,13 @@
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
     <Import Project="..\..\thirdparty\gtest-20180224\gtest-static.props" />
     <Import Project="..\..\thirdparty\gtest-20180224\gmock-static.props" />
-    <Import Project="..\..\thirdparty\boost-1.66.0\boost.props" />
+    <Import Project="..\..\thirdparty\boost-1.67.0\boost.props" />
   </ImportGroup>
   <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
     <Import Project="..\..\thirdparty\gtest-20180224\gtest-static.props" />
     <Import Project="..\..\thirdparty\gtest-20180224\gmock-static.props" />
-    <Import Project="..\..\thirdparty\boost-1.66.0\boost.props" />
+    <Import Project="..\..\thirdparty\boost-1.67.0\boost.props" />
   </ImportGroup>
   <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
     <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />