Justin's Tech Blog

Update below registry value to reflect the 'My Computer' icon name in the Desktop: HKEY_USERS\S-1-5-21-1343024091-764733703-725345543-71394\Software\Microsoft\Windows\CurrentVersion\Explorer\CLSID\{20D04FE0-3AEA-1069-A2D8-08002B30309D} key: (Default) Value: Computer name Split for easy lookup: HKEY_USERS\ S-1-5-21-1343024091-764733703-725345543-71394\ Software\ Microsoft\ Windows\ CurrentVersion\ Explorer\ CLSID\ {20D04FE0-3AEA-1069-A2D8-08002B30309D} PowerShell one-liner: set-itemproperty - path 'registry::HKEY_USERS\S-1-5-21-1343024091-764733703-725345543-71394\Software\Microsoft\Windows\CurrentVersion\Explorer\CLSID\{20D04FE0-3AEA-1069-A2D8-08002B30309D}' - name '(Default)' - value $ ( $env:computername )

 Ways to find Windows Product Key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SoftwareProtectionPlatform , find value of BackupProductKeyDefault (Not working) Find Product Key Using CMD: wmic path softwarelicensingservice get OA3xOriginalProductKey (Not working) powershell: "(Get-WmiObject -query ‘select * from SoftwareLicensingService’).OA3xOriginalProductKey" (Not working) Registry: Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\DigitalProductId

 Execute below command, and look for value in the output: "key content" under "security settings" netsh.exe wlan show profiles name=’Profile Name’ key=clear Sample output: Ref:  Get Wireless Network SSID and Password with PowerShell - Scripting Blog (microsoft.com)

 Option 1: Look for event log something like below in the system experiencing IP conflict: Log Name : System Source : Tcpip Event ID: 4199 "The system detected an address conflict for IP address <> with the system having network hardware address <>. Network operations on this system may be disrupted as a result Option 2: IPconfig result will show private IP address (like 169.254.) assigned even though you set a static IP.

Below is a way to run as System account in Windows computers: psexec -i -s cmd.exe -i  : Interactive -s  : System account cmd.exe : launch command window to execute other commands To run Powershell as system account: psexec -i -s powershell.exe

Issue : RDP connection is unsuccessful from Windows 7 or Windows 2008 R2 to TLS1.0 disabled servers. Solution : Enable TLS1.2 in the server and reboot. Refer this link for TLS versions:  TLS versions Install this hotfix from Microsoft in the client computers and reboot: https://support.microsoft.com/en-sg/help/3080079/update-to-add-rds-support-for-tls-1-1-and-tls-1-2-in-windows-7-or-wind This update provides support for Transport Layer Security (TLS) 1.1 and TLS 1.2 in Windows 7 Service Pack 1 (SP1) or Windows Server 2008 R2 SP1 for Remote Desktop Services (RDS). 

Solutions for WMI errors Symptoms: When you run wmic commands in a Windows server, you may get errors like below: wmic VOLUME GET Name ERROR: Description = Not Found Below are solutions for WMI errors, yet to be verified: If WMI database is broken, you need to follow this guide: https://msdn.microsoft.com/en-us/library/aa394603(v=vs.85).aspx to run WMI Diagnosis Utility , which will help you to confirm if that is really your issue and then fix it by following this guide: First try: winmgmt /verifyrepository .If the result is shown as inconsistent, go to step 2 winmgmt /salvagerepository winmgmt /verifyrepository - to check again wmi repository had been repaired successfully. If it fails - try fully rebuild the WMI Repository follow these steps: Disable and stop the winmgmt service Remove or rename C:\Windows\System32\wbem\repository Enable and start the winmgmt service Open a CMD prompt as Administrator In the CMD prompt Navigate to C:\Windows\System32\...

Ways to get DNS servers of a domain: Method 1: nslookup > set type=NS > Outputs: Non-authoritative answer:   nameserver = DNSserverNamel   nameserver = DNSserverName2 DNSserverNamel     internet address = DNSserverIPl DNSserverName2    internet address = DNSserverIP2 Method 2: nltest /dnsgetdc: Output: List of DCs in pseudo-random order taking into account SRV priorities and weights: Non-Site specific:    DNSserverNamel  DNSserverIPl    DNSserverName2  DNSserverIP2 The command completed successfully.

Frequently Asked Questions About Logon Scripts:   1.How do I setup Logon scripts in a domain with Active Directory?   2.Why would I choose one method over another?   3.Can I use both methods to assign Logon scripts?   4.How do I setup Logon scripts so they support all of my clients?   5.How do I configure a Logon script for a user on the "Profile" tab in AD Users & Computers?   6.What languages can I use for Logon scripts?   7.Can I use a VBScript program for a Logon script on all clients in my domain?   8.How do I configure a Logon script with Group Policy?   9.What about Logoff, Startup, and Shutdown scripts in Group Policy?   10.What permissions are required for Logon scripts to run?   11.What can be done with a batch file Logon script, besides launch a VBScript program?   12.What about Logon scripts in an NT domain? Answers:  1. How do I setup Logon script...