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HTTP Error 500.0 - Internal Server Error : The FastCGI process exited unexpectedly, Php + IIS

You need the Visual C++ Redistributable

For Php v7.2,

https://aka.ms/vs/15/release/VC_redist.x64.exe The .ms(Microsoft) link looks a bit odd but you can find it on the official site here: https://visualstudio.microsoft.com/downloads/ under other tools and frameworks.

For Php v7.0, v7.1,

  https://www.microsoft.com/en-us/download/details.aspx?id=48145

For Php v5.6,

https://www.microsoft.com/en-us/download/details.aspx?id=30679

Enjoy!

How to make google only look at lower case url for sites hosted on windows IIS Server, fixes duplicate title tags in Webmaster Tools error

This method can be used to fix duplicate content errors and make it so google only indexes one version of your urls, which will prevent you from getting a negative modifiers.

In order to do this you have two options.

  1. Use the proper canonical tags, for example place the following code at the top of your website:
  2. Use the following script to automate the process and only allow lower case urls to be viewed on your site, create a global.asax file and place it in your site's main directory. 

If you plan to use both methods be sure to use only lower case for your canonical tags or you will end up with problems.

Could not load file or assembly 'System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified

If you are getting this error:

Could not load file or assembly 'System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified.

First check that you have Microsoft.Web.Extensions.dll and Microsoft.Web.Extensions.Design.dll in your bin folder. Also check that you are using the correct version of .net in IIS.

If non of these solutions work then verify that if application is in a folder other than root you make this folder an application in IIS. Right click folder "convert to application".

 

How to globally redirect all requests from http to https using asp.net

The most effective method will be to use the global.asax file, here is a basic example:

<script language="C#" runat="server">
protected void Application_BeginRequest(Object sender, EventArgs e)	{
if (HttpContext.Current.Request.Url.ToString().ToLower().Contains("http://"))
{
    HttpContext.Current.Response.Status = "301 Moved Permanently"; 
    HttpContext.Current.Response.AddHeader("Location", Request.Url.ToString().ToLower().Replace("http://","https://")); 
}
}
</script>

In some cases you may already have an application using the global.asax file, you can in many cases add the _BeginRequest function or adapt it if it already exists. For example add this after the <script runat="server"> tag but before any other code.

protected void Application_BeginRequest(object sender, EventArgs e)	{
	if (HttpContext.Current.Request.Url.ToString().ToLower().Contains("http://"))	{
	HttpContext.Current.Response.Status = "301 Moved Permanently"; 
	HttpContext.Current.Response.AddHeader("Location", Request.Url.ToString().ToLower().Replace("http://","https://")); 
	}

In some cases this will throw and error, before sure to check the rest of the global.asax file for any other begin requests that may be conflicting. In some cases you may need to adapt the code to work in parallel with exiting code.