How to disable the alarm sound in the default Windows 10 timer app

I realize this is an old post, but I was able to mute alarms by going to Windows Settings, then System, then to Notifications & actions. From here, scroll down and click om "Alarms & Clock" - in this box, you can disable alarm sounds

Since you said we could use software, I made a 3-piece alarm clock. You can download it or copy+paste the code:

Startup.vbs

this will be the file you place in the startup section of the start menu (All programs panel)

Set oShell = CreateObject ("Wscript.Shell") 
Dim strArgs
strArgs = "cmd /c $LOCATION$"
oShell.Run strArgs, 0, false

Change $LOCATION$ with the location of the third file,

Popup.vbs

this will be the file with the reminder

lol=msgbox("MESSAGE.",0,"REMINDER!")

Change MESSAGE. with the body and REMINDER! with the title

Alarm.bat

this will be the file that checks the date and time and executes Popup.vbs

@ECHO OFF
setlocal enabledelayedexpansion
::====SET TABLE====::
SET ACtime=1717
SET ACday=MON 
SET ACmsgloc=C:\Users\Jeremi\Desktop\FaceCensorApp.vbs 
::====SET TABLE====::
title Alarm Clock

goto loop

:k
for %%i in (%ACday%) do (
if "%date:~0,3%"=="%%i" goto loop
)


goto k

====HELP====
HOW TO USE
Set the variables with the set table.

RULES
    1. ACtime is in 24-hr format. Remeber to put just digits no other characters.
    2. ACday is the FIRST 3 letters of the day, no other characters. Monday=MON Tuesday=Tue Wednesday=WED (You get the point?) 
    3. ACmsgloc is the LOCATION of the reminder file. Enter the FULL path (like C:\Users\Joey\Desktop\Popup.vbs
 RULES
 ====EXIT====

:loop
set mytime=%time:~0,2%%time:~3,2%

if "%mytime%" EQU "%ACtime%" (
start %ACmsgloc%
exit )  
goto loop
endlocal

DOWNLOAD: http://1drv.ms/1M1CnM8