Windows 10: Screen Scaling Issue on Lock Screen When Switching Between Accounts on 4K Monitor

Hello,I'm encountering a frustrating issue related to display scaling when switching between two Microsoft accounts on my Windows PC.I use a 4K monitor set to 100% scaling to take full advantage of its resolution. However, when I switch accounts, the lock screen appears to use a higher scaling factor 125% or 150%. This causes Windows to rescale every time I log in, resulting in several seconds of delay and screen adjustments.I have tried various approaches, but none seem to address the lock screen scaling issue specifically:Adjusting scaling settings for all monitors:Change DPI Scaling Level

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[Dual Monitor] How to fix on-screen object scaling?

I have 2x 27" LG monitors:

1. 4K UHD LCD
   
2. 2K QHD OLED
   

I use the OLED for gaming, but I use both for productivity and general use.

They are side by side, equal in size, and only different in pixel density / resolution.

The 4K UHD LCD is scaled to 150% (recommended by display settings) and the 2K QHD OLED is scaled to 100% (recommended by display settings)

However, Windows doesn't seem to have any awareness of these differences, and I constantly run into issues like:

• A window open on Screen 1 will look normal, but after dragging it to Screen 2 various element's of the window's UI will shrink or overlap or deform.
  
• Windows that were open previously on the other screen sometimes open in this deformed state.
  

Question: How can I fix this issue so that two monitors with identical dimensions but differing resolutions don't deform essential on-screen elements?

This issue is similar to the (prematurely locked) thread here:

Redirecting

 

Dialog box scales to 4k monitor even when opening on low-res screen (multiple monitor setup)

I have a 1366x768 laptop, set to 100% scaling, connected to an external 4K monitor set to 150%

If a dialog box opens on the external monitor it is correctly scaled. However if it opens on the laptop screen, or is moved to that screen, it is scaled to 150%, and I can't find any way to fix this

Is there a way tro force dialogs to rescale to the smaling multiplier of the screen they are on?

 

Scaling Issue With Extended Monitors

Hi,



Thank you for writing to Microsoft Community Forums.



I understand that you are facing scaling issues when you connect a 4K monitor to the PC. For more clarity on the issue, please respond to the questions below:

1. What is the make and model of the PC?
   
2. How the monitors are connected to the PC?
   
3. What is the build version of Windows installed on the PC?
   
4. Have you tried updating the display drivers?
   

Meanwhile, I would suggest you to refer the article
Windows scaling issues for high-DPI devices and check if that helps.



Please get back to us with the required information to assist you further with the issue.



Regards,

Prakhar Khare

Microsoft Community – Moderator