Windows 10: Can't keep file associations

I'm pretty sure this is a 1809 shenanigan but I'll post it anyway.
I just made a clean install of Win10 and since the reinstall I can't make the file associations "stick". When I try to open a file that has no association, I can select the program I want to open it with, but even if I mark the "always use" checkbox, the association won't happen. Next time I have to choose the program once again if I want to open that file.
What is really weird is that I can change the default apps, but I can't set the defaults by app, because some of the apps simply don't show up in the list (Notepad++, Corel Photoimact etc.).
I can't set the default by file type either, because the file type isn't in the list. I can work around this problem by using this method so I can see the extension in the list, but even if I choose an associated program, nothing happens. And I can't choose any other program than the defaults unless I already opened that extension once before...

Any ideas what to do?

:)

 

File Association Helper in Startup

from another forum on May 6, 2018:
You can uninstall File Association Helper in less than 5 minutes. Here are the steps to follow:

Step 1 — Uninstall File Association Helper via Control Panel

Simply go to Start > type Control Panel > double click the first result to launch Control Panel.
Then go to Uninstall a program > locate File Association Helper in the list and select it
Select Uninstall > wait until Windows completely removes FAH from your PC.
Restart your PC.
Step 2 — Clean the Registry Editor

Now that you removed the program, you also need to remove any traces or file changes associated with it. To do that, you need to open the Registry Editor.

Go to Start > type “regedit” > launch the Registry Editor
Locate the following keys and delete them:
KEY_CURRENT_USERSoftwareFile Association Helper
HKEY_LOCAL_MACHINESoftwareFile Association Helper

Step 3 — Check all the hidden files and folders

File Association Helper may have left behind various hidden files and folders. In order to completely remove the software, you can also need to delete these files. Here’s how to do that:

Simply go to Start > type Control Panel > double click the first result to launch Control Panel. On Windows 10, you can also type “Show hidden files and folder” in the search box. Then simply check Show hidden files, folders and drives and jump straight to step number 3.
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Go to Folder > select Show Hidden Files and Folders
Locate the following folders:
Crogram FilesFile Association Helper
C*Biggrinocument and SettingsAll UsersApplication DataFile Association Helper
C*Biggrinocuments and Settings%USER%Application DataFile Association Helper

4. Delete them and then restart your PC.

Step 4 — Empty Temp Folder

The final step is to clean the Temp folder where all the temporary files are stored. To empty the folder, go to Start and type the %temp% command.

This will open the Temp folders. You can now empty them. If the system displays an error message when deleting some files, leave them. The files might be in use by Windows services or some running software.

Step 5 — Use a dedicated tool to remove software leftovers

After you performed all the steps listed above, you have removed 99.9% of all the files and folders left behind by File Association Helper. However, there may be a few file that escaped your scrutiny. In order to make sure that you have removed all of them, you can also use a dedicated software uninstaller.

These applications are specially designed to remove the selected application along with all of its files and registry entries. As a result, the application will be completely removed from your PC.

There are many great uninstaller tools available on the market, but the best are IOBit Uninstaller and Revo Uninstaller so feel free to try any of these tools.

 

When clicking the files getting error that the file does not have a program associated with it for performing this action.

Hello,

I understand that when you try to open the file, you are prompted that the files does not have a program associated with it for performing this action. We will certainly help you.

• What file are you trying to open?

This issue is caused if the file is not associated with any of the application or program to open it.

If those files are the pictures as I can see that you are trying to access the picture folder. I suggest you to follow the below steps and check if the issue resolves.

• Right click on the file and select Open with.
• Select Photo App or Photo Gallery.
• Double click and check if you are able to open that file.

Keep us posted if the issue is resolved. We are glad to help you.

 

Setting File Associations - Another Step Backwards


Oh, this seems to point to Settings.... !



Maybe via a shortcut in the tutorial (which was quoted above)
List of Commands to Open Control Panel Items in Windows 10 Windows 10 Tutorials