Close all Adobe applications.
Right click on "my computer" icon
Click properties
Select Advanced System Settings or Advanced Tab (Based on your OS)
Click on the "Environment Variables..." button.
Click New... button on System Variables section, You can also set this in User Variables section, if you would like to keep the change limited to current logged in user
In the "New system variable" dialog, enter UI_SCALE_FACTOR in variable name field
Enter 1 in the Variable value field
Click OK
Launch InDesign and check if it is resolved.
I had the same problem. Dell XPS 15 laptop with a Dell second screen. Windows 11.
The solution that worked for me was on this thread:
https://community.adobe.com/t5/indesign-discussions/why-is-the-mouse-pointer-huge-in-indesign/m-p/6950323#M23224
Please follow the instructions:
Close all Adobe applications.
Right click on "my computer" icon
Click properties
Select Advanced System Settings or Advanced Tab (Based on your OS)
Click on the "Environment Variables..." button.
Click New... button on System Variables section, You can also set this in User Variables section, if you would like to keep the change limited to current logged in user
In the "New system variable" dialog, enter UI_SCALE_FACTOR in variable name field
Enter 1 in the Variable value field
Click OK
Launch InDesign and check if it is resolved.