Cannot play the DEMO [SOLVED]

Hey, my fellow follower of the Night!

I'm having problem starting the demo. I installed it via Steam.
When I start the demo, it ask me to install "Microsoft Visual C++ 2015 runtime".
I follow the process and UE4 prerequisite installation is done, then nothing happened.

I try to start the demo again and it ask me the same thing.
If I click "Yes", it will show window with option to uninstall UE4 prerequisite.

I cannot do anything else other than install and unistall UE4 prerequisite.

I'm not sure if this can be considered a bug, or not.

===== Updated =====

I try many things for hours but to no avail.

Then I tried running the game's EXE file directly with "Run as administrator".
There is an error said that the "api-ms-win-crt-runtime-l1-1-0.dll is missing".
This DLL file is part of the Microsoft Visual C++ Redistributable. I assume that it's 2015 version.

The real problem is Microsoft Visual C++ runtime cannot be installed properly.
I need to get updates for Windows from the windows update.
I never update mine for years and I got about 180 updates await.

In my case, I run out of disk space and cannot install all of them at once. Thus, it took so long to do so.
After about half of them installed, I give it a try and install "Microsoft Visual C++ Redistributable Update 2".
And voila!! I can play the demo.

In general case, you should test by running as administrator.
If it gives the same error as mine, update you Windows.
Then install "Microsoft Visual C++ Redistributable Update 2" from Microsoft website.
That should fix the problem.

I hope this would help.