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Posts in category Windows Client

MSI error code 1638: “Another version of this product is already installed”

When you try to remove an application, you receive the following error: “Another version of this product is already installed” with the error code 1638. This is a problem with minor/major versions of the installed product. When a GUID of a msi package changes (when an msi is generated for example), the product will detect itself […]

Invalid product key error when adding Windows Server 2012 R2 or Windows 8.1 KMS key

When you try to add the the KMS key for Windows Server 2012 R2 or Windows 8.1: cscript %windir%\system32\slmgr.vbs /ipk [product key] you receive the following error: 0xC004F050 The Software Licensing Service reported that the product key is invalid The KMS server needs to be updated before the key is recognized. Follow this link, download […]

Enable or disable Outlook add-ins on a per user basis (as for Citrix)

There are certain scenario’s where you want to enable Outlook add-ins only for specific users. This guide explains how to accomplish this by using the group policy. 1. Open the registry and navigate to: HKCU\Software\Microsoft\Office\Outlook\Addins 2. Find the corresponding key which matches the Outlook add-in you have installed (for example: HKCU\Software\Microsoft\Office\Outlook\Addins\OcOffice.OcForms) 3. Right-click on the […]

How to reset / bypass the administrator password on your Windows 7 / 2008 machine without logging on

Last time I had to rejoin a machine to the domain and apparently some nutjob administrator didn’t use the documented password for the local administrator account. So with no option to log on to the machine locally, I had to follow the steps below. Basically, you replace the executable used for Accessibility options showed in […]

Install print driver .inf file from command line

Sometimes you just want to add a printer driver to your Windows client. For example for USB connected printers so you don’t have to manually select the print driver every time connecting the printer to a new client. The following command line can be used in a batch file to automate the driver installation: rundll32 […]

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