How To
http://www.windowsphone.com/en-US/how-to/wp8/apps/how-do-i-install-apps-from-an-sd-card
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how to install .xap file in windows phone 8
Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.
Hi, Shivkumarsingh,
STEP 1: Copy all the .xap files which you want to install in your Windows 8 phone to your SD card.
STEP 2: Now go to Start -> Store -> SD card and wait for few minutes for all the .xap files to be loaded.
STEP 3: Select the app which you want to install -> Select Install option.
STEP 4: If your apps are compatible then you can see them in the Compatible apps list if not it will be shown in the Incompatible apps list.
STEP 5: Once you have successfully installed the apps, you can see those apps listed in the Apps list from start.
http://windows8search.com/forum/how-install-xap-files-windows-8-phone-2630.html
.xaphttps://www.appx4fun.com/xap/19933/
No, not in that scenario. Which issue/warning/note do you face exactly? The trick is to find the latest copy of that XAP (see other thread) because the Microsoft Store still checks whether it is the current version. Therefore, you need a Microsoft Account as well. At least in Windows Phone 8.1. In Windows 10 Mobile, you can go without any account.
Thought you had to have a developers kit installed