So as the topic, my launcher is constantly stuck at 2021.1
I tired all the method, like removing anything related to Paradox, clear all the cache and temp folders, then reinstall Stellaris to let Steam reinstall the launcher again.
Or just uninstall the launcher as program and download it from the paradox website independently and THEN trying to reinstall it by the .msi again.
They all failed, but the result is a bit different.
With the first method, the install process of the launcher isn't successful either, the installing screen would still jump to the conclusion of "ending prematurely"
But miraculously, the launcher would still show up with the second try running the game, and it will appear like this, and let's call it a "crippled" version.
The news is working fine, but the launcher would NEVER update, but somehow Vanilla could be run and played normally still.
But some of the mods that's up to date would crash the game when they really shouldn't, but some won't, I ain't genius but at least this kind of works.
Move on to the second method, which I uninstall the launcher and download the installer from the Paradox website.
The process and the result of installing is still the same, it would end prematurely, trying to open the game from Steam second time this time would only end up letting the Steam installing the "crippled" version one.
But it do produce some useful log from the failing installing.
So uhm, yeah, if there's anyone having any ideas, please do let me know, since I ignore this problem and thought it's only a wacky updating problem that would be fixed from time being, but it proves to be not the case, so I'm actively seeking a solution here now.
Yes, I did try to turn off my firewall when installing it, still doesn't work, and it shouldn't work in the requirements that you need to turn off the firewall in the first place.
And I bought the game from the Steam, if that's considered as additional information?
Verifying the data from Steam did not help too, since the launcher is more of a standalone program.
I tired all the method, like removing anything related to Paradox, clear all the cache and temp folders, then reinstall Stellaris to let Steam reinstall the launcher again.
Or just uninstall the launcher as program and download it from the paradox website independently and THEN trying to reinstall it by the .msi again.
They all failed, but the result is a bit different.
With the first method, the install process of the launcher isn't successful either, the installing screen would still jump to the conclusion of "ending prematurely"
But miraculously, the launcher would still show up with the second try running the game, and it will appear like this, and let's call it a "crippled" version.

The news is working fine, but the launcher would NEVER update, but somehow Vanilla could be run and played normally still.
But some of the mods that's up to date would crash the game when they really shouldn't, but some won't, I ain't genius but at least this kind of works.
Move on to the second method, which I uninstall the launcher and download the installer from the Paradox website.
The process and the result of installing is still the same, it would end prematurely, trying to open the game from Steam second time this time would only end up letting the Steam installing the "crippled" version one.
But it do produce some useful log from the failing installing.

So uhm, yeah, if there's anyone having any ideas, please do let me know, since I ignore this problem and thought it's only a wacky updating problem that would be fixed from time being, but it proves to be not the case, so I'm actively seeking a solution here now.
Yes, I did try to turn off my firewall when installing it, still doesn't work, and it shouldn't work in the requirements that you need to turn off the firewall in the first place.
And I bought the game from the Steam, if that's considered as additional information?
Verifying the data from Steam did not help too, since the launcher is more of a standalone program.