IdentityServer4 .NET Core Ajax Call not working after page is idle for several minutes #Solved

I have faced this problem while trying to implement IdentityServer4 in Microservice .net core project. I tried several codes and spend many days on this.

Finally, it's working fine. I have changed the Cookie settings in both the client-side and Identity server-side application configs.

Please try this and if anyone finds any better solutions, please let me know. Enjoy :)

Client-Side Config

 .AddCookie("Cookies", c =>  
   {  
     c.Cookie.SameSite = SameSiteMode.None;  
     c.Cookie.SecurePolicy = CookieSecurePolicy.Always;  
     c.Cookie.IsEssential = true;  
     c.SlidingExpiration = true;  
     c.ExpireTimeSpan = System.TimeSpan.FromHours(60);  
   }  

In the AddOpenIdConnect set

  options.UseTokenLifetime = false;  

IdentityServer Config

 builder.Services.Configure<CookieAuthenticationOptions>(IdentityServerConstants.DefaultCookieAuthenticationScheme, options =>  
 {  
   options.Cookie.SameSite = SameSiteMode.None;  
   options.Cookie.SecurePolicy = CookieSecurePolicy.Always;  
   options.Cookie.IsEssential = true;  
   options.SlidingExpiration = true;  
   options.ExpireTimeSpan = System.TimeSpan.FromHours(60);  
 });  

Usually, for Cookie-related problems, we don't need to adjust anything on the IdentityServer side.

But it is a little bit complex for me, that's why I have added the settings to both configs.