Windows 10: Cannot get file type associated with the application

I've just posted to the Ultimaker Cura forum, as Cura is the only application in which I seem to be getting this problem. But I suspect this may be a Win 10 issue so hope someone can help please. Despite having set the defaults correctly, I cannot get d-clicking from File Explorer to open Cura 4.9.1 (the latest version, installed two weeks ago). Same for 4.90. And using 'Open With...' does not work either; I go through the prodedure but when I try 'Open With...' again there is no entry for Cura. I'm not a programmer but it seems that Win 10 is still trying (but failing) to open an old version, Cura 4.8.0. I base this guess on running SysInternals' Procmon tool. I started it then quickly d-clicked an STL, waited a few seconds (with no Cura opening), then stopped Procmon and filtered the roughly 256K entries by 'Process = Cura.exe' AND 'Path contains Ultimaker'. That gave 78 entries, the first few of which I've pasted below in case this offers a clue to the technically enlightened. ALL 78 entries refer to 4.8.0. I have Win 10 Version 20H2 (OS Build 19042.1052) Anyone else seeing this issue with any file type, or able to suggest possible fix please? -------------------- Time.......................Process....PID.....Operation....Path..................................... ......................................Result......Detail 11:02:25.0527447 Cura.exe 10272 Load Image C:\Program Files\Ultimaker Cura 4.8.0\Cura.exe SUCCESS Image Base: 0x7ff7bfb60000, Image Size: 0x14000 11:02:25.0575370 Cura.exe 10272 CreateFile C:\Program Files\Ultimaker Cura 4.8.0\python35.dll SUCCESS Desired Access: Read Attributes, Disposition: Open, Options: Open Reparse Point, Attributes: n/a, ShareMode: Read, Write, Delete, AllocationSize: n/a, OpenResult: Opened etc . . 11:02:25.0580477 Cura.exe 10272 CreateFileMapping C:\Program Files\Ultimaker Cura 4.8.0\python35.dll FILE LOCKED WITH ONLY READERS SyncType: SyncTypeCreateSection, PageProtection: etc -------------------- Terry

:)

 

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.

 

How do I associate file types with non Microsoft programs?

The application I want to use does not show up in the list. in fact a lot of my apps don't show up in the list. the system then suggest going to the app store and apparently forgets it is trying to find an app to associate with the file type.

 

File type / program association

1. Start globe
2. Default programs
3. Associate a file type
4. Find jpg in the list
5. Change the default to your desired program