Hi Светлана Баженов,

Follow the below steps to perform Windows store troubleshooter and check if it helps.

• Press Windows + X keys on the keyboard and select Control Panel
• Type Troubleshooting in the search bar on the Control Panel.
• Click on View all on the left navigation pane.
• Click on Windows store apps.
• Click on Advanced on the Windows store apps dialog box and click on Run as administrator (Enter the credentials if required).
• Click on Next and follow onscreen instruction complete the Windows store apps troubleshooter.

If the Photos app is the only one crashing, it could be a problem with the Photos app database.
To reset the database, perform the following:
1. Press windows button + R
2. Type: %appdata%..LocalPackagesMicrosoft.Windows.Photos_8wekyb3d8bbweLocalState
3. Delete all the contents of that folder

Solution 1: Update Windows and Photos App
If the problem Windows 10 Photos App not working is system-related, or the Photos App conflicts with the system, it’s a good choice for you to update your Windows operating system and Photos App on your PC to get the issue fixed.
How to update Windows:
Step 1: Press the Windows key and click the Settings icon.
Step 2: Choose Update & Security > Windows Update and check for updates.
Step 3: Install the updates on your Windows PC if there are new updates available.
How to update Photos App:
Go to Microsoft Store, search for Microsoft Photos, and check for updates. Install the latest version of Photos App on your Windows 10 PC if there are new updates available.

Solution 2: Reset Photos App on Windows 10 PC
The effectiveness of this tip has been proven in solving the Windows 10 Photos App not working issue. Follow the steps below to reset the Photos App on your Windows 10 PC and see whether the problem is solved.
Step 1: Click the Windows key and choose Settings.
Step 2: Go to System > Apps & features. (Choose Apps under Settings if you don’t find Apps & features under System.)
Step 3: Search for Photos and click it.
Step 4: Choose Advanced options and click Reset.

Solution 3: Run Apps Troubleshooter
Windows provide you a built-in feature to solve the problems related to the Apps you got from Microsoft Store, which is App Troubleshooter. Here is the way to run it.
Step 1: Open Settings App in Windows 10.
Step 2: Go to Update & Security > Troubleshoot.
Step 3: Scroll down to click Windows Store Apps and choose Run the troubleshooter.
Step 4: Follow the on-screen instructions, reboot your computer, and see whether the problem still exists.

Solution 4: Reinstall Photos App in Windows 10
It’s possible that the Photos App on your PC is corrupted, which lead to the Windows 10 Photos App not working issue. If that’s the case, you just need to reinstall Photos App on your PC: first completely remove Photos App from your computer, and then go to Microsoft Store to reinstall it. Here are the detailed steps to do it.
Step 1: Right-click the Windows icon on your taskbar and choose Windows PowerShell (Admin).
Step 2: Type in the following command in the window and hit Enter.
get-appxpackage *Microsoft.Windows.Photos* | remove-appxpackage
Step 3: Wait for the process to be finished, and then reboot your PC running Windows 10.
Step 4: Go to Microsoft Store on your computer and search for Microsoft Photos.
Step 5: Download and install the Photos App on your Windows 10 PC.

I hope this helps.

Regards,
Lokesh