Silent Java update check
How to have automatic Java updates without jusched.exe process running all the time in the background and with control when a check for the update should occur?
Assumptions:
- Windows 7 64-bit
- Java 32-bit
Disable Java Automatic Updates: Change Java Update options.
Create java_check_update.ps1 PowerShell script with following content:
$currVer = Get-ItemProperty "hklm:\SOFTWARE\Wow6432Node\JavaSoft\Java Runtime Environment" -name "CurrentVersion"
if (!$currVer.'CurrentVersion') {
Exit
}
$famVerStr = ('Java' + $currVer.'CurrentVersion'.Split(".")[1] + 'FamilyVersion')
$famVer = Get-ItemProperty "hklm:\SOFTWARE\Wow6432Node\JavaSoft\Java Runtime Environment" -name $famVerStr
if (!$famVer.$famVerStr) {
Exit
}
$java_version = $famVer.$famVerStr
$url = "http://javadl-esd.sun.com/update/" + $currVer.'CurrentVersion' + ".0/map-" + $currVer.'CurrentVersion' + ".0.xml"
$c = New-Object System.Net.WebClient
$xml = $c.DownloadString($url)
$p = [xml]$xml
$n = $p.SelectSingleNode('java-update-map/mapping[version="' + $java_version + '"]')
if ($n) {
#update available
cmd.exe /c "C:\Program Files (x86)\Common Files\Java\Java Update\jucheck.exe"
}
Create java_check_update.vbs VBScript with following content:
Set oShell = CreateObject("WScript.Shell")
oShell.Run "powershell.exe -ExecutionPolicy Bypass -WindowStyle Hidden -File ""PATH_TO_POWERSHELL_SCRIPT""", 0
PATH_TO_POWERSHELL_SCRIPT for example: D:\Scripts\java_check_update.ps1
Add new task in Task Scheduler to run script java_check_update.vbs (full path to file) every day, week or month.