Windows 10: How to remove accidental file association

So I was trying to install a program that needs to be unassigned from a default program in order to work, but when trying to install it, I accidentally assigned .jar files to always open in Adobe Acrobat. I can figure out how to change which program opens the file, but I can't figure out how to unassign the file entirely.


I've tried several different methods to fix this. I've created a dummy program and assigned that to open the file, but this isn't working and I'm not sure why. I messed around with Command Prompt a bit, but that didn't work. It probably didn't work because I did it wrong, but I had to follow a tutorial from a programmer's website that used lots of computer terminology that I didn't understand.


If anyone can help me, I'd be very grateful. Thanks!

:)

 

Notepad.exe Accidentally Associated with .sync file in Family Tree Maker 2014.1

Notepad.exe was accidentally associated with the .sync file in Family Tree Maker 2014.1

Notepad is now also has associated with other .sync files in iTunes, nVidia, Java and BitDefender.

I can't get this fixed. A re-install of Family Tree Maker 2014.1 fails because if these file associations.

RegEdit was used to remove the association for Family Tree Maker but it persists in the folder views.

Any suggestions?

 

Remove accidental .dll file association

On Windows 10 I have accidentally set the association for .dll files to Notepad++ - how can I remove the association so that dll files go back to having no assocation?

I found this question, which concerns .exe files rather than .dll

I have poked aorund the registry, but I can't seem to find any Notepad++ entries for associations

 

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.