SD card not registering after update

Hello, I updated my Sony z3 this morning, before everything was working fine! When it reloaded all of the apps that were saved to my sd card were greyed out and although the phone is detecting the SD card I can't access it or save anything to it. I can't open apps and the logo for the SD card is at the top of my phone and I can't do anything with it. Please can someone help me?

Firstly try to unmount the card and remount, if apps do not appear try restarting the phone. If they still do not work redownload the apps in the playstore

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