diff --git a/books/free-programming-books-langs.md b/books/free-programming-books-langs.md
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--- a/books/free-programming-books-langs.md
+++ b/books/free-programming-books-langs.md
@@ -2445,7 +2445,7 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
 
 ### Windows Phone
 
-* [Developing An Advanced Windows Phone 7.5 App That Connects To The Cloud](http://coolthingoftheday.blogspot.co.uk/2012/05/free-ebook-guidance-advanced-windows.html)
+* [Developing An Advanced Windows Phone 7.5 App That Connects To The Cloud](https://web.archive.org/web/20150709045622/http://download.microsoft.com/download/C/4/6/C4635738-5E06-4DF7-904E-BDC22AED2E58/Developing%20an%20Advanced%20Windows%20Phone%207.5%20App%20that%20Connects%20to%20the%20Cloud.pdf) - MSDN Library, David Britch, Francis Cheung, Adam Kinney, Rohit Sharma (PDF) (:card_file_box: *archived*)
 * [Windows Phone 8 Development Succinctly](https://www.syncfusion.com/resources/techportal/ebooks/windowsphone8) - Matteo Pagani (PDF)
 * [Windows Phone 8.1 Development for Absolute Beginners](http://channel9.msdn.com/Series/Windows-Phone-8-1-Development-for-Absolute-Beginners)
 * [Windows Phone Programming Blue Book](http://www.robmiles.com/c-yellow-book/)