AppManifest validation failed. Invalid AppPlatformVersion in WMAppmanifest.xml

Question

I recently updated my WP8 Silverlight app to 8.1 Silverlight. But now, building ehwn, I always get this error message

AppManifest Validation failed. Invalid AppPlatformVersion in WMAppmanifest.xml  Bedtime Music

What went wrong and how can I fix it.

thank

+3

phisch 10 Aug '14 at 8:20

1 answer

phisch · Accepted Answer · 2014-08-10T18:16:22+0000

No, I found out myself: There is the following line in the WMAppmanifest file:

<Deployment xmlns="http://schemas.microsoft.com/windowsphone/2012/deployment" AppPlatformVersion="8.0">

To deal with the error I received when installing 8.0 - 8.1, I also need to change the year from 2012 to 2014.

<Deployment xmlns="http://schemas.microsoft.com/windowsphone/2014/deployment" AppPlatformVersion="8.1">

Also somewhere else in the file.