![]() ![]() The result will be an added signature block, in the very end of the New-ToastNotification.ps1 file: Sign the New-ToastNotification.ps1 file using PowerShell similar to below: $cert = Get-ChildItem -Path Cert:\CurrentUser\My –CodeSigningCert I will not go into details on the CA portion, but for your convenience, find a few snippets of the template and certificate I created below. I chose the latter, and created a code signing template on our internal CA server and issued the template, making it available for certificate requests. There are 2 routes to accomplish this: 1) buy a code signing certificate from a public vendor 2) issue your own code signing certificate from an internal CA. A little something on PowerShell code signing: about Signing – PowerShell | Microsoft Docs.The solution to this, is to digitally sign the New-ToastNotification.ps1 file. You can verify the current language mode by running: $īelow is an illustration of the broken functionality, when running the New-ToastNotification.ps1 file directly on a system, where AppLocker is configured and Constrained Language Mode enabled: More on Constrained Language Mode here: PowerShell Constrained Language Mode – PowerShell Team ().Then you realize, that PowerShell is operating in what’s called Constrained Language Mode, and therefore have reduced functionality, which is the reason for the Toast Notification Script is no longer working. %OSDRIVE%\USERS\MAB\APPDATA\LOCAL\TEMP\_ PSSCRIPTPOLICYTEST_1 was prevented from running.With the broken functionality comes following entries in the AppLocker event log: Microsoft-Windows-AppLocker/MSI and Script The docs on AppLocker can be found here: AppLocker (Windows) – Windows security | Microsoft Docsįast-forwarding past all of the setup of AppLocker and verifying things are working, you will start noticing, that some of your scripts which used to work, no longer work as intended.I’m not sure that moving between PowerShell Language Modes coming from Proactive Remediations in Intune, is something that’s possible (if anyone knows this, please let me know).Īdditionally to the changes needed, I thought the process itself would make a decent and useful blog post. The changes made to this “edition” of the script, are only targeted Configuration Manager. While working my way through the process myself, I realized that a few changes to the Toast Notification Script itself was needed. My solution to this, is to digitally sign the New-ToastNotification.ps1 file. This requirement does not work well with AppLocker and having Constrained Language Mode enabled. If you are looking for a more detail step by step setup guide for AppLocker then I would definitely recommend check out my other blog post How to configure AppLocker Group Policy in Windows 7 to block third-party browsersĭo you have any other tips for troubleshooting AppLocker? then post them below in the comments.My Toast Notification Script unfortunately only works in PowerShell Full Language Mode (for the time being. ![]() ![]() Rule Tip: It’s also worth mentioning to NEVER just configure a single Deny rule without the “Default Rules” also configured as this will have the affect of blocking ALL programs and thus breaking your computer. Note: This workflow is a check list for ensuring that your environment is configured correctly so that the AppLocker rule will actually apply as they are configured. So below is a simple troubleshooting flow chart that should help you go through the common issues that happen when setting up an AppLocker rule in your environment. However there are a number of steps and pre-requisites for this feature to work that seem to catch people up quite often. AppLocker is a great new feature that was introduced in Windows 7 that allowed IT Admins to prevent the running of certain application in their corporate environment (e.g. ![]()
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