I second this question. My enjoyment of Elder Scrolls games comes mostly from the construction set/creation Kit. I was surprised to not find it included here.

You can install Skyrim Steam Creation Kit on Skyrim GOG, it will work as long as you have a steam_api64.dll there too.

steam_api64.dll is kind of a "generic" file, it's not tied to games or ownership itself, it's tied to versions, Creation Kit SSE 64bits expects version "2.48.45.4".
SSE64bits and Fallout 4 = DLL is exactly the same version, so both will work.

Does anyone know any free to play 64bits game/demo on Steam that comes with steam_api64.dll 2.48.45.4? it doesn't have to be a Bethesda game.

Fallout Shelter ships with steam_api64.dll 3.75.32.7... it was pretty close, but I don't think it will work.

This .DLL can be easily found on the internet, but of course, it can be a malicious file, so I don't recommend it unless you trust it.

Afraid it doesn't work unless you ALSO have Steam's version of Skyrim installed. So no, this isn't a solution.

It shouldn't be necessary, really.
If you have steam_api64.dll.DLL, CreationKit.exe, and SkyrimSE.exe in the same folder, Creation Kit should work (you still need to launch it from Steam).

I think the "SteamVR Performance Test" software (free, doesn't require a VR device) ship with that same steam_api64.dll v2.48.45.4 as well.

And what I'm telling you is, it isn't working. The ONLY thing that works is actually installing the game on Steam, which isn't what GOG wants. GOG just needs to add it to the install the same way they did with every past creation kit for other Bethesda games.

Yeah, that would be ideal.
I'm afraid that a new version of the Creation Kit for GOG would mean that Creation Kit fixes 3.2/3.3 may won't work on it. CK without CK fixes is... hard to deal with it.

I just noticed that CK fixes 3.3 has an optional drm-free executable, have you tried it? (you may need to rename it to CreationKit.exe).

This worked for me!! Thank you so much.

Note: you will also need tbb.dll and tbbmalloc.dll from here to get it working:
https://www.nexusmods.com/skyrimspecialedition/mods/20061?tab=files

Has anyone reported the issue to GOG (and received a reply)?

Wait, this isn't how you report this?

??? It just went through my mind that no participant of this discussion said anything about GOG's position, or justification for not making the kit available. I also assume that probably someone did ask GOG already and could inform the community.
It's not my issue.

Sadly the answer is negative :

0rcan (GOG.com)
Oct 24, 2022, 15:13 GMT+2
Hello,

Thank you for your message and I apologize for late reply.

Unfortunately, there are no immediate plans to include Skyrim Creation Kit to GOG.

I apologize for the inconvenience.
Regards,
Orcan
GOG Customer Support

With what Katar10 posted, Skyrim belongs in the list of Games that treat GOG customers as second class citizens

I have sent a mail to bethesda, we will see their answer.

The answer :

Greetings!

Thank you for contacting the Bethesda Customer Support Team. My name is Brian and I will be discussing this matter with you today.

I understand that you are inquiring about the Creation Club in the GOG Version of The Anniversary Edition of Skyrim. We at Customer Support do not have any information on when the Creation Club will get added to this version of the Game. We apologize as this is not the answer you were hoping for.

If you would like to provide this matter as feedback to our Development team. You are able to provide feedback for The Elder Scrolls V: Skyrim Anniversary Edition through our support website:
1. Select Skyrim as your product
2. Click Feedback
3. Select the closest matching category of your feedback.
4. Fill in the form and click Submit
Alternatively, you can use our official Discord servers.

If you have anymore questions, please reach back out to us and we will be happy to help.

Thank you,
Brian
Bethesda Customer Support