how-to-setup-a-windows-build-with-visual-studio.md

-*  *Microsoft Visual Studio* 2015 Community can compile OpenSimRoot.
+###  *Microsoft Visual Studio* __2015__ Community can compile OpenSimRoot.
 
-*  Clone or check-out gitlab: This can be done with Visual Studio (optional): 
+######  Clone or check-out gitlab: This can be done with Visual Studio (optional): 
 
     1. Start Visual Studio, go to Team Explorer and go to git:
     2. New > Repository > Locale git-repository > clone gitlab repository, you can do it with https://gitlab.com/rootmodels/OpenSimRoot.git 
 
-*  Create new Visual Studio project with the gitlab code:
+
+######  Create new Visual Studio project with the gitlab code:
 
     1. In the Visual Studio main menu select: New > From existing code (last entry)
     2. Select Visual C++
     3. choose folder with existing OpenSimRoot code and name your Visual Studio project
     4. Next > Windows application > finish
 
-*  Build a Windows .exe:
+
+######  Build a Windows exe:
 
     1. Choose build option x64, Release (optional)
     2. Compile / build new
     3. The .exe file can be found in the project folder and has the name you gave at (3) above, while creating the project.
+
+
+### Known issues with *Visual Studio* __2019__ Community:
+
+* set only the src as project folder. 
+
+###### Solve XSD error:
+
+    1. Start Visual Studio 2019 Developer Command Prompt as __Admin__. (Type "dev" in the search box,...)
+    2. XSD depends on the CodeProvider. We install the CodeProvider dll in the GAC. I typed (in the command window):
+
+"C:\Program Files (x86)\Microsoft SDKs\Windows\v10.0A\bin\NETFX 4.8 Tools\gacutil.exe" -i "%DevEnvDir%\PublicAssemblies\CppCodeProvider.dll"
+
+Your path to gacutil.exe can be different. The second part is the important one.
+
+###### Solve CL.exe exit with error code 1:
+
+ *  compile with c++14 (/std:c++14) (OpenSimRoot state 2019, Sept. 02)
+ *  compile with VS compiler flag /bigobj
+
+#### Run tests
+
+* For example double click on the generated exe: Select a file from the tests folder. Output is created in the folder of the executable by default. 
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