Good morning Dave, thanks for that but it is something I do regularly! The first time I use the Troubleshooter more often than not it says "unresponsive apps" not fixed. If I check again after a couple of minutes it says "no problems found" ! The Photo app works fine but not the first time of using! I normally drag a PowerPoint presentation I have created into it. I add some special effects and then save. On most occasions it either locks up while adding the effects or the blue bar stops moving across when saving! I then have to start from scratch and then it works fine! It has done this for a long time now, I thought removing and putting it back may have cured it but no. I had similar problems with the Mailbox/Calendar app two years ago. I ended up doing a in place reinstall of Windows 10! It cured that and other issues so that maybe a consideration !
Brian