Windows »
IIS, mutual authentication using SSL certificates
Not everyone knows that IIS (Internet Information Services), the webserver included in Windows Server, offers the possibility to perform mutual authentication using SSL certificates. You probably saw that, within the site’s SSL configuration, you
Read More »
IIS, how to debug HTTP errors
Today I faced a problem during the setup of a new application: if I opened a browser and entered the URL of the application, I got the following error message To be able to
Read More »
WinRM, exceeded MaxEnvelopeSize quota
Today, while I was configuring an Exchange 2010 server, I got the following error: The WinRM […] was notified that the request size exceeded the configured MaxEnvelopeSize quota The MaxEnvelopeSize parameter defines the maximum size (in Kb)
Read More »
Windows, how to clean up unused COM ports
It certainly happened to you that, when you connect a new USB device to your Windows PC, the operating system assigns the device a COM port with a high number because of the previous
Read More »
Windows: unable to apply GPOs, event id 1065
Today I noticed that some Windows servers were not applying the correct GPOs (Group Policy Objects). Troubleshooting the problem, I found the event id 1065 in the Windows eventlog: A GPO was indeed configured with a WMI
Read More »
IIS 7.5 – Revert custom error pages to inherited ones
On IIS you can define custom error pages for the different HTTP error codes (for example the code 404 stands for “page not found”). Today I needed to revert the custom error pages to
Read More »
KMS server and Windows 8 or Server 2012 clients
Today I needed to activate, using my KMS server running on Windows 2008 R2, some desktops and servers with Windows 8 and Windows 2012. First, you need to install an update, KB2885698, to make the KMS
Read More »
Prevent simultaneous connection to wifi and wired networks
After having learned how to create a blacklist of SSIDs, today I’d like to share with you a useful opensource tool to prevent simultaneous connection to a wifi and a wired network. From the security
Read More »
Prevent the connection to a wifi network via GPO
Today I was asked to prevent the corporate laptops from connecting to a particular wifi network. With the use of a group policy (GPO) it is possible to define a blacklist of SSID; let’s
Read More »
IE8 does not show PDF files when using HTTPS
In the last few days, I faced a strange problem during my job: a web application, running on Tomcat, dynamically generates some PDF reports. When we activated the HTTPS to secure the connection, users with
Read More »
