Windows 10: need to have permission to delete photos & videos

I have transferred photos from my android phone onto pcI got what looks like hundreds of unwanted pictures, signs and whatnot that I cannot deletebecause I seem to need permission to delete.Also how do I stop this from re-occuring?Please help.

:)

 

Deleting photos in Windows 10

Hi,

Welcome to Microsoft Community.

- Are you using Photo app or other app?

If you are referring to Photo app, follow the below steps and check.

• • 
    

[*]1. In the Photos app, go to the folder with the files you want to delete.
[*]2. Do one of the following:

• If you’re looking at your list of photos and videos, swipe down on or right-click the files you want to delete. You can also tap or click
  Select all.
  
• If you open a photo or video, swipe up from the bottom or right-click to see the app commands.
  

3. Tap or click
Delete.

• 
  

You can also delete photos using the Camera app, the OneDrive app, or File Explorer.

The above steps are the only way to delete the photos.

If you are referring to a different app or form different location, help us with more information.

Regards,

Guru Kiran

 

Multiple Photos

We suggest that you follow the steps below to delete the photo through Photos app:

• If you’re looking at your list of photos in Photos app, select the photos by clicking on checkbox on the photos you want to delete. Click
  Delete icon at the bottom right corner to delete.
• If you open a photo, Tap or press Delete
  key from keyboard.

Let us know if you need more assistance.

 

Photos app - trim a video - error

Hello,
I am trying to use the built-in Windows 10 Photos app to trim a video.
I have the video playing in the Photos app and click "Trim Video" at the top.
I move the sliders to select the start and end points.
I click "Save a copy" at top-right.
The app says "It looks as though you don't have permissions to save changes to this file. Try saving a copy instead."
Having just clicked "Save a copy", I am confused as to why this error message is appearing.
I've tried copying the .mp4 to my VIDEOS folder on C: drive with the same result.
Some research has suggested to run the Photos app as Administrator, but I can't figure out how to do that.
Any suggestions on how to trim a video would be appreciated!
Thanks,