Microsoft has undergone a new mechanism to roll out updates since the launch of Windows 10 that was on 29 July. In the third update since launch it has begun rollout of what it is called cumulative update. That means the update file is cumulative and in case you have not installed the earlier updates then this will pick you up and running the latest version of Windows.
On the other hand, if you have updated the prior updates, then only incremental patches are installed.
In a certain post , Mary Jo Foley has said, “But a Microsoft spokesperson did let me know that the new update is designed to fix the Windows 10 Store issues which had been affecting a number of us Windows 10 users for the past week. A number of us were unable to access the Store, obtain app updates and/or download new apps. In some cases, Windows Store apps like Mail and Calendar were also not working.”
She adds, “‘KB 3081438 is now available resolving the Store issues,’ said the spokesperson in response to my question about what Microsoft was doing to fix the Store issues. Company officials declined to say anything beyond that about what specifically caused the Store problems. I was told ‘Microsoft has nothing further to share.’”
In its official update, Microsoft said, “This update includes improvements to enhance the functionality of Windows 10. Windows 10 updates are cumulative. Therefore, this package contains all previously released fixes. If you have previous updates installed, only the new fixes that are contained in this package will be downloaded and installed to your computer.”