diff --git a/docs/en/release-info/release-notes.md b/docs/en/release-info/release-notes.md
index 87005ce8ad..d091a5840b 100644
--- a/docs/en/release-info/release-notes.md
+++ b/docs/en/release-info/release-notes.md
@@ -286,7 +286,7 @@ See the detailed **[blog post / announcement](https://abp.io/blog/ABP-Framework-
 * Created the Oracle Integration Package for EF Core.
 * New **File Management Module** that is used to store and manage files in your application.
 * Migrated the Angular UI to the **Angular 10**.
-* Published an **[API documentation](https://abp.io/docs/3.0)** web site to explore the classes of the ABP.
+* Published an **[API documentation](https://docs.abp.io/api-docs/commercial/2.9/api/index.html)** web site to explore the classes of the ABP.
 
 ## 2.9 (2020-06-04)
 
diff --git a/docs/en/samples/index.md b/docs/en/samples/index.md
index c03f16cf8b..619eb81484 100644
--- a/docs/en/samples/index.md
+++ b/docs/en/samples/index.md
@@ -27,13 +27,13 @@ A simple CRUD application to show basic principles of developing an application
 The following samples uses only the open source (free) modules.
 
 * **Book Store: Razor Pages UI & Entity Framework Core**
-  * [Tutorial](https://abp.io/docs/latest/tutorials/book-store/part-01?UI=MVC&DB=EF)
+  * [Tutorial](../tutorials/book-store/part-01.md?UI=MVC&DB=EF)
   * [Source code](https://github.com/abpframework/abp-samples/tree/master/BookStore-Mvc-EfCore)
 * **Book Store: Blazor UI & Entity Framework Core**
-  * [Tutorial](https://abp.io/docs/latest/tutorials/book-store/part-01?UI=Blazor&DB=EF)
+  * [Tutorial](../tutorials/book-store/part-01.md?UI=Blazor&DB=EF)
   * [Source code](https://github.com/abpframework/abp-samples/tree/master/BookStore-Blazor-EfCore)
 * **Book Store: Angular UI & MongoDB**
-  * [Tutorial](https://abp.io/docs/latest/tutorials/book-store/part-01?UI=NG&DB=Mongo)
+  * [Tutorial](../tutorials/book-store/part-01.md?UI=NG&DB=Mongo)
   * [Source code](https://github.com/abpframework/abp-samples/tree/master/BookStore-Angular-MongoDb)
 * **Book Store: Modular application (Razor Pages UI & EF Core)**
   * [Source code](https://github.com/abpframework/abp-samples/tree/master/BookStore-Modular)
@@ -43,13 +43,13 @@ The following samples uses only the open source (free) modules.
 The following samples uses the pro modules.
 
 - **Book Store: Razor Pages (MVC) UI & Entity Framework Core**
-  - [Tutorial](https://abp.io/docs/latest/tutorials/book-store/part-01?UI=MVC&DB=EF)
+  - [Tutorial](../tutorials/book-store/part-01.md?UI=MVC&DB=EF)
   - [Download the source code](https://abp.io/Account/Login?returnUrl=/api/download/samples/bookstore-mvc-ef)
 - **Book Store: Blazor UI & Entity Framework Core**
-  - [Tutorial](https://abp.io/docs/latest/tutorials/book-store/part-01?UI=Blazor&DB=EF)
+  - [Tutorial](../tutorials/book-store/part-01.md?UI=Blazor&DB=EF)
   - [Download the source code](https://abp.io/Account/Login?returnUrl=/api/download/samples/bookstore-blazor-efcore)
 - **Book Store: Angular UI & MongoDB**
-  - [Tutorial](https://abp.io/docs/latest/tutorials/book-store/part-01?UI=NG&DB=Mongo)
+  - [Tutorial](../tutorials/book-store/part-01.md?UI=NG&DB=Mongo)
   - [Download the source code](https://abp.io/Account/Login?returnUrl=/api/download/samples/bookstore-angular-mongodb)
 
 ## Other Samples
diff --git a/docs/en/ui-themes/lepton-x/mvc.md b/docs/en/ui-themes/lepton-x/mvc.md
index c5d12c4c20..4627ccb727 100644
--- a/docs/en/ui-themes/lepton-x/mvc.md
+++ b/docs/en/ui-themes/lepton-x/mvc.md
@@ -152,7 +152,7 @@ Commonly used components in all layouts.
 
 ![Breadcrumb](images/leptonx-breadcrumb.png)
 
-Breadcrumbs can be customized by using the `IPageLayout` service. See [PageLayout - Breadcrumb](https://abp.io/docs/latest/UI%2FAspNetCore%2FPage-Header#breadcrumb) for more information. 
+Breadcrumbs can be customized by using the `IPageLayout` service. See [PageLayout - Breadcrumb](../../framework/ui/mvc-razor-pages/page-header.md#breadcrumb) for more information. 
 
 If you need to replace the component, you can follow the steps below.
 
@@ -166,7 +166,7 @@ If you need to replace the component, you can follow the steps below.
 
 ![Content title](images/leptonx-content-title.png)
 
-Page Titles can be customized by using the `IPageLayout` service. See [PageLayout - Page Title](https://abp.io/docs/latest/UI%2FAspNetCore%2FPage-Header#page-title) for more information.
+Page Titles can be customized by using the `IPageLayout` service. See [PageLayout - Page Title](../../framework/ui/mvc-razor-pages/page-header.md#page-title) for more information.
 
 If you need to replace the component, you can follow the steps below.