How do I fix the Windows Defender update delay problem?

Thank you for your reply. I apologize for the lack of clarity in my first question.

The main point is:

The problem is a delay: My computer receives Windows Defender signature/definition updates, but they arrive hours or even days late compared to their actual release time or when they arrive on other devices. This affects real-time protection.

The actions I've taken haven't worked: I've run the Windows Update Core Repair commands (DISM /RestoreHealth and SFC /scannow), but the delay persists.

Is there any specific reason or known system setting that could cause a delay in fetching/deliverying Windows Defender updates to a particular device, even though the update services are functioning correctly?