Inability to play more than one song at a time when in the “all music” mode.How to fix?
You need to reset Windows Media Player library.
1.In the Start Search box type in services.msc
2.Now locate Windows Media Player Network Sharing Service. If its status is Started, double-click the service and click Stop.You may do the same on right clicking on this service and choosing Stop option.
3.Press Win + R keys to launch Run menu
4.In the Run menu type in %LOCALAPPDATA%\Microsoft in Open area and press Enter key. This folder will open up in C:\Users\user name\AppData\Local\Microsoft
5.Now locate and delete the Media Player folder. [If you can’t see the folder, then it’s probably hidden. Set Explorer to show hidden files and folders]
This will reset library.Now recheck the issue.