diff --git a/Practice/AntrasWeb/AntrasWeb.csproj b/Practice/AntrasWeb/AntrasWeb.csproj
index 18d2c20..2b91e20 100644
--- a/Practice/AntrasWeb/AntrasWeb.csproj
+++ b/Practice/AntrasWeb/AntrasWeb.csproj
@@ -13,7 +13,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>AntrasWeb</RootNamespace>
     <AssemblyName>AntrasWeb</AssemblyName>
-    <TargetFrameworkVersion>v4.8</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
     <UseIISExpress>true</UseIISExpress>
     <Use64BitIISExpress />
     <IISExpressSSLPort />
@@ -52,9 +52,9 @@
     <Reference Include="System.ComponentModel.DataAnnotations" />
     <Reference Include="System" />
     <Reference Include="System.Data" />
-    <Reference Include="System.Web.Extensions" />
     <Reference Include="System.Drawing" />
     <Reference Include="System.Web" />
+    <Reference Include="System.Web.Extensions" />
     <Reference Include="System.Xml" />
     <Reference Include="System.Configuration" />
     <Reference Include="System.Web.Services" />
diff --git a/Practice/AntrasWeb/Web.config b/Practice/AntrasWeb/Web.config
index 9f38313..8f87728 100644
--- a/Practice/AntrasWeb/Web.config
+++ b/Practice/AntrasWeb/Web.config
@@ -1,9 +1,17 @@
 <?xml version="1.0"?>
 <configuration>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.6.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation debug="true" targetFramework="4.8"/>
+    <compilation debug="true" targetFramework="4.6.1"/>
     <httpRuntime targetFramework="4.6.1"/>
-	<globalization fileEncoding="utf-8" />
+    <globalization fileEncoding="utf-8"/>
   </system.web>
   <system.codedom>
     <compilers>
@@ -11,4 +19,4 @@
       <compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.VBCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:default /nowarn:41008 /define:_MYTYPE=\&quot;Web\&quot; /optionInfer+"/>
     </compilers>
   </system.codedom>
-</configuration>
+</configuration>
\ No newline at end of file
diff --git a/Practice/DuomWeb/DuomWeb.csproj b/Practice/DuomWeb/DuomWeb.csproj
index 15b3b12..67d5288 100644
--- a/Practice/DuomWeb/DuomWeb.csproj
+++ b/Practice/DuomWeb/DuomWeb.csproj
@@ -13,7 +13,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>DuomWeb</RootNamespace>
     <AssemblyName>DuomWeb</AssemblyName>
-    <TargetFrameworkVersion>v4.7.2</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
     <UseIISExpress>true</UseIISExpress>
     <Use64BitIISExpress />
     <IISExpressSSLPort>
@@ -24,6 +24,7 @@
     <UseGlobalApplicationHostFile />
     <NuGetPackageImportStamp>
     </NuGetPackageImportStamp>
+    <TargetFrameworkProfile />
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -45,22 +46,21 @@
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System.Data.DataSetExtensions" />
     <Reference Include="System.Web.DynamicData" />
     <Reference Include="System.Web.Entity" />
     <Reference Include="System.Web.ApplicationServices" />
     <Reference Include="System.ComponentModel.DataAnnotations" />
     <Reference Include="System" />
     <Reference Include="System.Data" />
-    <Reference Include="System.Core" />
-    <Reference Include="System.Data.DataSetExtensions" />
     <Reference Include="System.Web.Extensions" />
-    <Reference Include="System.Xml.Linq" />
     <Reference Include="System.Drawing" />
     <Reference Include="System.Web" />
     <Reference Include="System.Xml" />
     <Reference Include="System.Configuration" />
     <Reference Include="System.Web.Services" />
     <Reference Include="System.EnterpriseServices" />
+    <Reference Include="System.Xml.Linq" />
   </ItemGroup>
   <ItemGroup>
     <Reference Include="Microsoft.CodeDom.Providers.DotNetCompilerPlatform">
diff --git a/Practice/DuomWeb/Web.config b/Practice/DuomWeb/Web.config
index 2d1c85e..43322ff 100644
--- a/Practice/DuomWeb/Web.config
+++ b/Practice/DuomWeb/Web.config
@@ -1,18 +1,26 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0"?>
 <!--
   For more information on how to configure your ASP.NET application, please visit
   https://go.microsoft.com/fwlink/?LinkId=169433
   -->
 <configuration>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.6.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation debug="true" targetFramework="4.7.2" />
-    <httpRuntime targetFramework="4.7.2" />
-	<globalization fileEncoding="utf-8" />
+    <compilation debug="true" targetFramework="4.6.1"/>
+    <httpRuntime targetFramework="4.6.1"/>
+    <globalization fileEncoding="utf-8"/>
   </system.web>
   <system.codedom>
     <compilers>
-      <compiler language="c#;cs;csharp" extension=".cs" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:default /nowarn:1659;1699;1701" />
-      <compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.VBCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:default /nowarn:41008 /define:_MYTYPE=\&quot;Web\&quot; /optionInfer+" />
+      <compiler language="c#;cs;csharp" extension=".cs" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:default /nowarn:1659;1699;1701"/>
+      <compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.VBCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:default /nowarn:41008 /define:_MYTYPE=\&quot;Web\&quot; /optionInfer+"/>
     </compilers>
   </system.codedom>
 </configuration>
\ No newline at end of file
diff --git a/Practice/PirmasWeb/PirmasWeb.csproj b/Practice/PirmasWeb/PirmasWeb.csproj
index 0e4da6a..49f5394 100644
--- a/Practice/PirmasWeb/PirmasWeb.csproj
+++ b/Practice/PirmasWeb/PirmasWeb.csproj
@@ -13,7 +13,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>PirmasWeb</RootNamespace>
     <AssemblyName>PirmasWeb</AssemblyName>
-    <TargetFrameworkVersion>v4.8</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
     <UseIISExpress>true</UseIISExpress>
     <Use64BitIISExpress />
     <IISExpressSSLPort />
@@ -52,9 +52,9 @@
     <Reference Include="System.ComponentModel.DataAnnotations" />
     <Reference Include="System" />
     <Reference Include="System.Data" />
-    <Reference Include="System.Web.Extensions" />
     <Reference Include="System.Drawing" />
     <Reference Include="System.Web" />
+    <Reference Include="System.Web.Extensions" />
     <Reference Include="System.Xml" />
     <Reference Include="System.Configuration" />
     <Reference Include="System.Web.Services" />
diff --git a/Practice/PirmasWeb/Web.config b/Practice/PirmasWeb/Web.config
index e8d3f1d..bd9da41 100644
--- a/Practice/PirmasWeb/Web.config
+++ b/Practice/PirmasWeb/Web.config
@@ -4,10 +4,18 @@
   https://go.microsoft.com/fwlink/?LinkId=169433
   -->
 <configuration>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.6.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation debug="true" targetFramework="4.8"/>
+    <compilation debug="true" targetFramework="4.6.1"/>
     <httpRuntime targetFramework="4.6.1"/>
-	<globalization fileEncoding="utf-8" />
+    <globalization fileEncoding="utf-8"/>
   </system.web>
   <system.codedom>
     <compilers>
@@ -15,4 +23,4 @@
       <compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.VBCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:default /nowarn:41008 /define:_MYTYPE=\&quot;Web\&quot; /optionInfer+"/>
     </compilers>
   </system.codedom>
-</configuration>
+</configuration>
\ No newline at end of file
diff --git a/Practice/SesijaWeb/SesijaWeb.csproj b/Practice/SesijaWeb/SesijaWeb.csproj
index 7307920..11e3d67 100644
--- a/Practice/SesijaWeb/SesijaWeb.csproj
+++ b/Practice/SesijaWeb/SesijaWeb.csproj
@@ -13,7 +13,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>SesijaWeb</RootNamespace>
     <AssemblyName>SesijaWeb</AssemblyName>
-    <TargetFrameworkVersion>v4.8</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
     <UseIISExpress>true</UseIISExpress>
     <Use64BitIISExpress />
     <IISExpressSSLPort />
@@ -52,9 +52,9 @@
     <Reference Include="System.ComponentModel.DataAnnotations" />
     <Reference Include="System" />
     <Reference Include="System.Data" />
-    <Reference Include="System.Web.Extensions" />
     <Reference Include="System.Drawing" />
     <Reference Include="System.Web" />
+    <Reference Include="System.Web.Extensions" />
     <Reference Include="System.Xml" />
     <Reference Include="System.Configuration" />
     <Reference Include="System.Web.Services" />
diff --git a/Practice/SesijaWeb/Web.config b/Practice/SesijaWeb/Web.config
index d95e638..ae5e544 100644
--- a/Practice/SesijaWeb/Web.config
+++ b/Practice/SesijaWeb/Web.config
@@ -13,9 +13,9 @@
       </system.Web>
   -->
   <system.web>
-    <compilation debug="true" targetFramework="4.8"/>
+    <compilation debug="true" targetFramework="4.6.1"/>
     <httpRuntime targetFramework="4.6.1"/>
-	<globalization fileEncoding="utf-8" />
+    <globalization fileEncoding="utf-8"/>
   </system.web>
   <system.codedom>
     <compilers>
@@ -23,4 +23,4 @@
       <compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.VBCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:default /nowarn:41008 /define:_MYTYPE=\&quot;Web\&quot; /optionInfer+"/>
     </compilers>
   </system.codedom>
-</configuration>
+</configuration>
\ No newline at end of file
diff --git a/Practice/ValidWeb/ValidWeb.csproj b/Practice/ValidWeb/ValidWeb.csproj
index d46f7d4..eb5f44d 100644
--- a/Practice/ValidWeb/ValidWeb.csproj
+++ b/Practice/ValidWeb/ValidWeb.csproj
@@ -13,7 +13,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>ValidWeb</RootNamespace>
     <AssemblyName>ValidWeb</AssemblyName>
-    <TargetFrameworkVersion>v4.8</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
     <UseIISExpress>true</UseIISExpress>
     <Use64BitIISExpress />
     <IISExpressSSLPort />
@@ -52,9 +52,9 @@
     <Reference Include="System.ComponentModel.DataAnnotations" />
     <Reference Include="System" />
     <Reference Include="System.Data" />
-    <Reference Include="System.Web.Extensions" />
     <Reference Include="System.Drawing" />
     <Reference Include="System.Web" />
+    <Reference Include="System.Web.Extensions" />
     <Reference Include="System.Xml" />
     <Reference Include="System.Configuration" />
     <Reference Include="System.Web.Services" />
diff --git a/Practice/ValidWeb/Web.config b/Practice/ValidWeb/Web.config
index 3adb345..5fcd54e 100644
--- a/Practice/ValidWeb/Web.config
+++ b/Practice/ValidWeb/Web.config
@@ -7,10 +7,18 @@
   <appSettings>
     <add key="ValidationSettings:UnobtrusiveValidationMode" value="None"/>
   </appSettings>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.6.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation debug="true" targetFramework="4.8"/>
+    <compilation debug="true" targetFramework="4.6.1"/>
     <httpRuntime targetFramework="4.6.1"/>
-	<globalization fileEncoding="utf-8" />
+    <globalization fileEncoding="utf-8"/>
   </system.web>
   <system.codedom>
     <compilers>
@@ -18,4 +26,4 @@
       <compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.VBCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:default /nowarn:41008 /define:_MYTYPE=\&quot;Web\&quot; /optionInfer+"/>
     </compilers>
   </system.codedom>
-</configuration>
+</configuration>
\ No newline at end of file
diff --git a/Recursion/LD_24/LD_24.csproj b/Recursion/LD_24/LD_24.csproj
index caea5eb..ce5dfa8 100644
--- a/Recursion/LD_24/LD_24.csproj
+++ b/Recursion/LD_24/LD_24.csproj
@@ -13,7 +13,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>LD_24</RootNamespace>
     <AssemblyName>LD_24</AssemblyName>
-    <TargetFrameworkVersion>v4.8</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.6.1</TargetFrameworkVersion>
     <UseIISExpress>true</UseIISExpress>
     <Use64BitIISExpress />
     <IISExpressSSLPort>
@@ -24,6 +24,7 @@
     <UseGlobalApplicationHostFile />
     <NuGetPackageImportStamp>
     </NuGetPackageImportStamp>
+    <TargetFrameworkProfile />
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -45,22 +46,21 @@
   </PropertyGroup>
   <ItemGroup>
     <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System.Data.DataSetExtensions" />
     <Reference Include="System.Web.DynamicData" />
     <Reference Include="System.Web.Entity" />
     <Reference Include="System.Web.ApplicationServices" />
     <Reference Include="System.ComponentModel.DataAnnotations" />
     <Reference Include="System" />
     <Reference Include="System.Data" />
-    <Reference Include="System.Core" />
-    <Reference Include="System.Data.DataSetExtensions" />
     <Reference Include="System.Web.Extensions" />
-    <Reference Include="System.Xml.Linq" />
     <Reference Include="System.Drawing" />
     <Reference Include="System.Web" />
     <Reference Include="System.Xml" />
     <Reference Include="System.Configuration" />
     <Reference Include="System.Web.Services" />
     <Reference Include="System.EnterpriseServices" />
+    <Reference Include="System.Xml.Linq" />
   </ItemGroup>
   <ItemGroup>
     <Reference Include="Microsoft.CodeDom.Providers.DotNetCompilerPlatform">
diff --git a/Recursion/LD_24/Web.config b/Recursion/LD_24/Web.config
index a190051..43322ff 100644
--- a/Recursion/LD_24/Web.config
+++ b/Recursion/LD_24/Web.config
@@ -1,18 +1,26 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0"?>
 <!--
   For more information on how to configure your ASP.NET application, please visit
   https://go.microsoft.com/fwlink/?LinkId=169433
   -->
 <configuration>
+  <!--
+    For a description of web.config changes see http://go.microsoft.com/fwlink/?LinkId=235367.
+
+    The following attributes can be set on the <httpRuntime> tag.
+      <system.Web>
+        <httpRuntime targetFramework="4.6.1" />
+      </system.Web>
+  -->
   <system.web>
-    <compilation debug="true" targetFramework="4.8" />
-    <httpRuntime targetFramework="4.8" />
-	<globalization fileEncoding="utf-8" />
+    <compilation debug="true" targetFramework="4.6.1"/>
+    <httpRuntime targetFramework="4.6.1"/>
+    <globalization fileEncoding="utf-8"/>
   </system.web>
   <system.codedom>
     <compilers>
-      <compiler language="c#;cs;csharp" extension=".cs" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:default /nowarn:1659;1699;1701" />
-      <compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.VBCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:default /nowarn:41008 /define:_MYTYPE=\&quot;Web\&quot; /optionInfer+" />
+      <compiler language="c#;cs;csharp" extension=".cs" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.CSharpCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:default /nowarn:1659;1699;1701"/>
+      <compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" type="Microsoft.CodeDom.Providers.DotNetCompilerPlatform.VBCodeProvider, Microsoft.CodeDom.Providers.DotNetCompilerPlatform, Version=2.0.1.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" warningLevel="4" compilerOptions="/langversion:default /nowarn:41008 /define:_MYTYPE=\&quot;Web\&quot; /optionInfer+"/>
     </compilers>
   </system.codedom>
-</configuration>
+</configuration>
\ No newline at end of file