Problem with sharing

[WPCentral Question]

Hello. I've recently updated my Lumia 520 to Cyan. And now it can't share anything. E.g. I want to share doc from Office app. I hold on a doc, click share, choose my email app. Then with a little loading at the top it just goes back to Office app not attaching files anywhere. Same picture is with the shop, where I can't share applications. Same picture with trying to share photos, it just goes back to photo I'm trying to share.
Problem only appears with mail. Sharing to OneDrive and OneNote works just fine. Sharing from this e-mails on another Lumia 520 works fine aswell.

Maybe I forgot some tick somewhere? Like 'Enable sharing by mails'. I've googled but unfortunately found nothing.

 

[anudeep2143]

First switch on d Bluetooth !! And den try!! Den u will find Bluetooth when u click on share

 

[Kiberia]

Sorry, it's not what I need to. I want to share something via mail.
Anyway, Bluetooth turning on doesn't help

 

[Kiberia]

Any more ideas? I'm kinda desperate here.

 

[iluvtilz]

Backup and hard reset.

 

[Inocencio Sanchez]

Mine is fine... Sharing files in Lumia with cyan update is excellent.. But my Wi-Fi connection turned weak.