Problem:

We couldn't connect to the update service. We'll try again later, or you can check now. If it still doesn't work, make sure you're connected to the Internet.

or in German:

Wir konnten keine Verbindung mit dem Updatedienst herstellen. Wir versuchen es später erneut. Alternativ können Sie es jetzt versuchen. Überprüfen Sie Ihre Internetverbindung, falls es immer noch nicht funktioniert.

Lösung/Solution:

HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\

Delete/Lösche: WindowsUpdate key, restart „Windows Update Service“

If you encounter the following error:

"This application requires a Java Runtime Environment 1.8.0. The registry refers to a nonexistent Java Runtime Environment installation or the runtime is corrupted."

and you’ve „installed“ the registry keys feature during installation like this:

you might want to check this registry path:

HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\JavaSoft\JRE\13.0.2.8

add a key called „JavaHome“ if there is none with the path to your AdoptOpenJdK installation (i.e.: C:\Program Files\AdoptOpenJDK\jdk-13.0.2.8-hotspot\)

Take these steps if you need Adobe Premiere, Adobe Photoshop and/or Adobe After Effects installed in english while your operating system runs a different language:

Adobe After Effects:
In your Documents folder create an empty document called: ae_force_english.txt

Adobe Premiere Pro:
* Create a new project (or open one)
* Hit CTRL+F12
* In this window click the 3-minus-menu thingy and select „Debug Database View“
* Look for „ApplicationLanguage“ and change it to „en_EN

Adobe Photoshop:
Go to the directory the program has been installed to (e.g. Program Files\Adobe\Adobe Photoshop 2020)
and there to the \Locales\de_DE\Support Files folder.
Find the language file, e.g. tw10428_Photoshop_de_DE.dat and rename the file extansion to something different e.g. tw10428_Photoshop_de_DE.bak.

Yeah…it’s sooo easy.