it fixes the issue I had a similar issue in VS2015: When I tried to use a dtd or xsd file for validation/intellisense, I received error messages. I tried to delete the schemas in the Schema selector, but some sharepoint related shema was remained (not deleted). Finally I've renamed the folders where these shemas were located, and the intellisense started to work (after restart VS). The folder is the following:
This might help you I got the errors to go away by installing the Windows Universal CRT SDK component, which adds support for legacy Windows SDKs. You can install this using the Visual Studio Installer:
Using Apache Lucene.Net 4.8.0 with .NET Standard 1.5 and Visual Studio 2017
around this issue The value of __cplusplus is temporarily intentionally non-conformant by default for current versions of Visual Studio in order to avoid breaking existing code. It does not mean your compiler does not support any C++11 (or newer) features. Quoting from MSVC now correctly reports __cplusplus:
To fix the issue you can do After more investigation, I found that in Visual Studio 2017, we can updating QueryTimeoutSeconds in regedit, but a little configuration because Visual Studio 2017 already hive the regedit. First, please close all Visual Studio 2017 application, after that, open regedit application.