diff --git a/HashingCmd/HashingCmd.csproj b/HashingCmd/HashingCmd.csproj
index 94e80f5c60b7c53974cc28f05325d2cc888fd911..d34ec17f0ecaf0ed79ce5f6f213b0ca26d0b4116 100644
--- a/HashingCmd/HashingCmd.csproj
+++ b/HashingCmd/HashingCmd.csproj
@@ -4,7 +4,6 @@
     <MainProductVersion>0.1.0</MainProductVersion>
     <VersionPrefix>$(MainProductVersion).$([System.DateTime]::UtcNow.Subtract($([System.DateTime]::new(2015,1,1))).Days)</VersionPrefix>
 
-    <ProjectGuid>{33F9848E-9257-4BE2-915F-68E748AEB204}</ProjectGuid>
     <RootNamespace>HashingCmd</RootNamespace>
     <AssemblyName>hashingcmd</AssemblyName>
     <DefineConstants />
diff --git a/HashingTool/HashingTool.csproj b/HashingTool/HashingTool.csproj
index f81b719255d1c3e12aa6f5f62787e44b767c1428..4b0aa5e3bfcb0aaa66a9a901512695cff1d300bf 100644
--- a/HashingTool/HashingTool.csproj
+++ b/HashingTool/HashingTool.csproj
@@ -4,7 +4,6 @@
     <MainProductVersion>0.2.0</MainProductVersion>
     <VersionPrefix>$(MainProductVersion).$([System.DateTime]::UtcNow.Subtract($([System.DateTime]::new(2015,1,1))).Days)</VersionPrefix>
 
-    <ProjectGuid>{E14FC935-30EA-4BE6-AA8A-85CB76FEBA6A}</ProjectGuid>
     <OutputType>WinExe</OutputType>
     <RootNamespace>HashingTool</RootNamespace>
     <AssemblyName>HashingTool</AssemblyName>
diff --git a/Tools/DeclarationCycleZip/DeclarationCycleZip.csproj b/Tools/DeclarationCycleZip/DeclarationCycleZip.csproj
index ec7bea407cd607f901ce2f74a9885dc42c88f750..28a25cca5b648205913e8332e085440e1c5adc42 100644
--- a/Tools/DeclarationCycleZip/DeclarationCycleZip.csproj
+++ b/Tools/DeclarationCycleZip/DeclarationCycleZip.csproj
@@ -1,6 +1,5 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <ProjectGuid>{2320CD6F-FE7B-4341-A9BB-3ABCA7EF18F6}</ProjectGuid>
     <OutputType>Exe</OutputType>
     <RootNamespace>DeclarationCycleZip</RootNamespace>
     <AssemblyName>DeclarationCycleZip</AssemblyName>
diff --git a/Tools/GraphDrawer/GraphDrawer.csproj b/Tools/GraphDrawer/GraphDrawer.csproj
index bb6e27dacbdb7de28761cd17508519ed4ea8aef6..7a235d36146952bea8804f7ed29379690db98adb 100644
--- a/Tools/GraphDrawer/GraphDrawer.csproj
+++ b/Tools/GraphDrawer/GraphDrawer.csproj
@@ -1,6 +1,5 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <ProjectGuid>{6589CAEC-ECC9-4BCC-9699-DE3F22BBCBD4}</ProjectGuid>
     <OutputType>Exe</OutputType>
     <RootNamespace>GraphDrawer</RootNamespace>
     <AssemblyName>GraphDrawer</AssemblyName>
diff --git a/Tools/LicenceHeader/LicenceHeader.csproj b/Tools/LicenceHeader/LicenceHeader.csproj
index cf326df4b610bf7f64354d693ec64bfbba8bf2c9..ee0d830f574cc3bfd751929288189b62cc0c07e4 100644
--- a/Tools/LicenceHeader/LicenceHeader.csproj
+++ b/Tools/LicenceHeader/LicenceHeader.csproj
@@ -1,6 +1,5 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <ProjectGuid>{E8B0B447-1A54-4BEC-A160-AF0017000781}</ProjectGuid>
     <OutputType>Exe</OutputType>
     <RootNamespace>LicenceHeader</RootNamespace>
     <AssemblyName>LicenceHeader</AssemblyName>
diff --git a/VECTO/VECTO.vbproj b/VECTO/VECTO.vbproj
index 753c722b916de0d4e50a996bac3f3c3375e23745..599f0c30a4cd2fa2b6a74fdb4b6290390ff41c1c 100644
--- a/VECTO/VECTO.vbproj
+++ b/VECTO/VECTO.vbproj
@@ -1,6 +1,5 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <ProjectGuid>{AAC0F132-0A9F-45B3-B682-77AC9B24B352}</ProjectGuid>
     <OutputType>WinExe</OutputType>
     <StartupObject>Sub Main</StartupObject>
     <RootNamespace>TUGraz.VECTO</RootNamespace>
diff --git a/VECTO3GUI2020/VECTO3GUI2020.csproj b/VECTO3GUI2020/VECTO3GUI2020.csproj
index 2a82871ebad16e78cf133dc7796a16a20a3bcfec..1cef03dafb2f70af757407626ee3ffdf42244045 100644
--- a/VECTO3GUI2020/VECTO3GUI2020.csproj
+++ b/VECTO3GUI2020/VECTO3GUI2020.csproj
@@ -3,8 +3,6 @@
     <!-- Version Information (only needed if it differs from Global VECTO Version)-->
     <MainProductVersion>0.2.0</MainProductVersion>
     <VersionPrefix>$(MainProductVersion).$([System.DateTime]::UtcNow.Subtract($([System.DateTime]::new(2015,1,1))).Days)</VersionPrefix>
-
-    <ProjectGuid>{7E9172D4-07E3-4077-814E-7117AB2B3E22}</ProjectGuid>
     <OutputType>WinExe</OutputType>
     <RootNamespace>VECTO3GUI2020</RootNamespace>
     <AssemblyName>VECTOMultistage</AssemblyName>
diff --git a/VECTOAux/VectoAuxiliariesTests/VectoAuxiliariesTests.vbproj b/VECTOAux/VectoAuxiliariesTests/VectoAuxiliariesTests.vbproj
index 9cd1e0c04869f28d1bbfb2596f3dc3963d6bde79..4aaaad408cf38c19dff680b1c54d826bc7ee92f9 100644
--- a/VECTOAux/VectoAuxiliariesTests/VectoAuxiliariesTests.vbproj
+++ b/VECTOAux/VectoAuxiliariesTests/VectoAuxiliariesTests.vbproj
@@ -1,6 +1,5 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <ProjectGuid>{6F31F8B2-6AB3-4F85-8AC9-D09ADCA6432D}</ProjectGuid>
     <RootNamespace>VectoAuxiliariesTests</RootNamespace>
     <AssemblyName>VectoAuxiliariesTests</AssemblyName>
     <DefineConstants />
diff --git a/VectoCommon/VectoCommon/VectoCommon.csproj b/VectoCommon/VectoCommon/VectoCommon.csproj
index d21e7f7b72fbcb428825f92bfeae3b10fed1f348..2a1bc6f2730214fc5762f3a35064c545f5812369 100644
--- a/VectoCommon/VectoCommon/VectoCommon.csproj
+++ b/VectoCommon/VectoCommon/VectoCommon.csproj
@@ -4,7 +4,6 @@
     <!--<MainProductVersion>0.0.0</MainProductVersion>-->
     <!--<VersionPrefix>$(MainProductVersion).$([System.DateTime]::UtcNow.Subtract($([System.DateTime]::new(2015,1,1))).Days)</VersionPrefix>-->
 
-    <ProjectGuid>{79A066AD-69A9-4223-90F6-6ED5D2D084F4}</ProjectGuid>
     <RootNamespace>TUGraz.VectoCommon</RootNamespace>
     <AssemblyName>VectoCommon</AssemblyName>
     <DefineConstants />
diff --git a/VectoCommon/VectoHashing/VectoHashing.csproj b/VectoCommon/VectoHashing/VectoHashing.csproj
index 171269944f95b1d74683564d076375008e909801..dabece5c129dd65b4be83a8ca3b89afcbf839769 100644
--- a/VectoCommon/VectoHashing/VectoHashing.csproj
+++ b/VectoCommon/VectoHashing/VectoHashing.csproj
@@ -4,7 +4,6 @@
     <MainProductVersion>1.2.9</MainProductVersion>
     <VersionPrefix>$(MainProductVersion).$([System.DateTime]::UtcNow.Subtract($([System.DateTime]::new(2015,1,1))).Days)</VersionPrefix>
 
-    <ProjectGuid>{B673E12F-D323-4C4C-8805-9915B2C72D3D}</ProjectGuid>
     <RootNamespace>TUGraz.VectoHashing</RootNamespace>
     <AssemblyName>VectoHashing</AssemblyName>
     <DefineConstants />
diff --git a/VectoCommon/VectoHashingTest/VectoHashingTest.csproj b/VectoCommon/VectoHashingTest/VectoHashingTest.csproj
index 62e6c072634c5c99e58eeeda6d5b795b908610a6..c2b2c7dfb85d804b7dd1bc9115a7ba538865de91 100644
--- a/VectoCommon/VectoHashingTest/VectoHashingTest.csproj
+++ b/VectoCommon/VectoHashingTest/VectoHashingTest.csproj
@@ -4,7 +4,6 @@
     <!--<MainProductVersion>0.0.0</MainProductVersion>-->
     <!--<VersionPrefix>$(MainProductVersion).$([System.DateTime]::UtcNow.Subtract($([System.DateTime]::new(2015,1,1))).Days)</VersionPrefix>-->
 
-    <ProjectGuid>{760C1C5B-A767-463E-BA85-F0BCFC23A550}</ProjectGuid>
     <RootNamespace>VectoHashingTest</RootNamespace>
     <AssemblyName>VectoHashingTest</AssemblyName>
     <DefineConstants />
diff --git a/VectoConsole/VectoConsole.csproj b/VectoConsole/VectoConsole.csproj
index 160f32a139de838ae86c1ed55f9c7e4fc3ebbc7f..1d2988adcd96bd447a0f6400d6138d02fe3b71f2 100644
--- a/VectoConsole/VectoConsole.csproj
+++ b/VectoConsole/VectoConsole.csproj
@@ -1,6 +1,5 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <ProjectGuid>{60AD4DF0-6648-4374-83CB-C7A162EFB391}</ProjectGuid>
     <OutputType>Exe</OutputType>
     <RootNamespace>VectoConsole</RootNamespace>
     <AssemblyName>vectocmd</AssemblyName>
diff --git a/VectoCore/ModelbasedTests/ModelbasedTests.csproj b/VectoCore/ModelbasedTests/ModelbasedTests.csproj
index 8e82aae326bd50abfc11ed6c129a0fab56ca70ea..e8fe7d4cfbfe9cc225778fabb05dadb5d726f62c 100644
--- a/VectoCore/ModelbasedTests/ModelbasedTests.csproj
+++ b/VectoCore/ModelbasedTests/ModelbasedTests.csproj
@@ -1,6 +1,5 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <ProjectGuid>{A0256B2A-09F8-45AD-B46A-FD98D7AAAA0C}</ProjectGuid>
     <RootNamespace>TUGraz.VectoCore.ModelbasedTests</RootNamespace>
     <AssemblyName>ModelbasedTests</AssemblyName>
     <DefineConstants />
diff --git a/VectoCore/VectoCore/VectoCore.csproj b/VectoCore/VectoCore/VectoCore.csproj
index b97b7fe1771a852229c7f37227d197eb7419eee8..c92dd9b7e576a7bfb786c2924d48728972126e1f 100644
--- a/VectoCore/VectoCore/VectoCore.csproj
+++ b/VectoCore/VectoCore/VectoCore.csproj
@@ -1,6 +1,5 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <PropertyGroup>
-    <ProjectGuid>{CD36938A-ADD9-4C65-96DA-B397CDEEA90A}</ProjectGuid>
     <RootNamespace>TUGraz.VectoCore</RootNamespace>
     <AssemblyName>VectoCore</AssemblyName>
     <DefineConstants />