Hello i have an issue with my youtube fullscreen mode today

Question

this what it looks like with fullscreen mode on

Pls help me to fix it

Answer 1

Hi @EL MOKHTAR N'GADI,  

Welcome to Microsoft Q&A forum.

Thank you for reaching out. Based on your description, I have outlined the steps below to help resolve the issue where the YouTube player does not scale correctly in Fullscreen mode on your laptop.

1/ Clear YouTube cache and cookies

As @tinyLUPPA shared, this resets the site data and can fix player rendering glitches:

• Click the Padlock icon located to the left of the URL in the address bar.
• Select Cookies and site data and then Manage on-device site data.
• Click the Delete icon for all YouTube entries.
• Refresh the page and sign back in.

2/ Reset browser and system scaling

Incorrect zoom levels often cause the "windowed" Fullscreen look:

• Browser Zoom: Press Ctrl + 0 while on the YouTube tab to reset the zoom to 100%.
• Windows Scaling: Open Settings > System > Display and verify that Scale and layout is set to the Recommended percentage.

3/ Test in incognito mode

This helps identify if a browser extension is interfering with the layout:

• Press Ctrl + Shift + N to open a new Incognito window.
• Open the video there. If it works correctly, one of your extensions is likely the cause and should be disabled or updated.

4/ Toggle hardware acceleration

Issues with how the browser uses your graphics card can cause display errors:

• Go to your browser Settings and search for Hardware Acceleration.
• Toggle the setting to the opposite of its current state (Off to On, or vice versa) and restart the browser.

I hope these steps help restore the Fullscreen experience. Please let me know if the issue persists or if you need additional assistance.