Feb 21
I logged remotely to a server with RDP and I noticed that I had options to restart or shutdown that server. This means we can shutdown or restart a server without physical access and without authentication:
Feb 20
Session freeze when starting Excel
Remko WeijnenComments Off
Environment
Windows 2003 Enterprise (32 bit), Citrix XenApp 5, RES Workspace Manager 2011, McAfee VirusScan Enterprise 8.7.0i.
Problem
When a opening an Excel workbook from Sharepoint the whole session freezes.
I asked the user to open an Excel workbook from Sharepoint and I noticed the following popup:
So my first thought was that the user somehow clicked this message to the background and IE was waiting for a response.
Feb 14
Script to Get Computer OU
Remko WeijnenComments Off
Just some quick code to get the OU Name of the computer we run the script on.
VBS:
Function GetComputerOU
Dim objSysInfo: Set objSysInfo = CreateObject("ADSystemInfo")
Dim objComputer: Set objComputer = GetObject("LDAP://" & objSysInfo.ComputerName)
Dim objOU : Set objOU = GetObject(objComputer.Parent)
GetComputerOU = objOU.OU
End Function
Dim objSysInfo: Set objSysInfo = CreateObject("ADSystemInfo")
Dim objComputer: Set objComputer = GetObject("LDAP://" & objSysInfo.ComputerName)
Dim objOU : Set objOU = GetObject(objComputer.Parent)
GetComputerOU = objOU.OU
End Function
Wscript.Echo GetComputerOU
PowerShell:
function GetComputerOU
{
$SysInfo = New-Object -ComObject "ADSystemInfo"
$Computer = [ADSI]("LDAP://{0}" -f $SysInfo.GetType().InvokeMember("ComputerName", [System.Reflection.BindingFlags]::GetProperty, $null, $SysInfo, $null))
return ([ADSI]$Computer.Parent).OU
}
{
$SysInfo = New-Object -ComObject "ADSystemInfo"
$Computer = [ADSI]("LDAP://{0}" -f $SysInfo.GetType().InvokeMember("ComputerName", [System.Reflection.BindingFlags]::GetProperty, $null, $SysInfo, $null))
return ([ADSI]$Computer.Parent).OU
}
GetComputerOU
Feb 13
The Citrix Online Plugin has a number of settings that can be changed. This includes things as Window Size and Color Depth:
In my case I wanted to preset the Window size to Full Screen so using Process Monitor I checked where the Online Plugin writes this setting. I Used a Filter that includes only the Online Plugin (PNAMain.exe) and the RegSetValue Operation:
Feb 10
Hibernation fails in Windows 7
Remko WeijnenComments Off
A while ago my Windows 7 laptop suddenly refused to go into Hibernation. The strange thing was that the whole process of saving memory to the hibernate file seemed to work correctly. The screen would go black and there was lots of disk activity. Then after the disk activity finished the system would return to the logon screen.
A Google on this issue learned that the most likely cause was a driver preventing the system from going into hibernation. Using the cmdline “powercfg -DEVICEQUERY wake_armed” we can check if there are any devices that can wake the system. Another useful parameter is –ENERGY which generates an html report file.
But in my case this lead to nothing.
Feb 10
Speed up Windows 7 Resume by 20%
Remko WeijnenComments Off
UPDATE: See this new article by Helge Klein
Recently Helge Klein wrote a blog titled How to Speed Up Your Windows 7 Boot Time by 20%. He does this by disabling the graphical animation that Windows 7 displays while booting.
After applying this tweak I noticed that a resume from hibernation (which I do far more often than a full boot) still showed the graphical animation (and wasn’t speed up).
So how to disable the animation while resuming?
Jan 31
Harmony Client crashes upon exit
Remko WeijnenComments Off
Today I was troubleshooting the application “Harmony Client” which crashed upon exiting:
The application had been thinapped and the error only appeared when starting the thinapped version.
Jan 22
After updating to iOS 5.01 the keyboard wasn’t shown anymore on my iPad2. This happened in all applications except Cydia.
I remembered that I had installed the (excellent) application 5-Row Keyboard for iPad which shows the numeric keys together with the QWERTY keys (in a 5th row). I also remembered that this tweak didn’t work in Cydia so I assumed that the tweak was incompatible with iOS5.
After uninstalling via Cydia the keyboard worked fine as well but I really miss the 5th row…
Jan 21
From Jailbreak to Jailbreak part 2
Remko WeijnenComments Off
In this post, which is a followup on my From JailBreak to Jailbreak post, I will describe the same procedure for A5 devices (iPhone 4S and iPad 2).
A lot of the stuff is really the same so I will not describe that again, this includes the actual update to iOs 5.01, xBackup, SHSH signatures and backup using iTunes.
Currently the Jailbreak for A5 devices with iOS 5 is only for iOS 5.01. Since Apple is expected to release iOS 5.1 very soon it’s highly recommended to update to iOS 5.01 NOW. Especially because it’s not yet possible to downgrade to iOS 5.01 using Tiny Umbrella.
Jan 20
A Jailbreak for iOS 5.01 on A5 devices (the iPad 2 and the iPhone 4S) has been released today. If you didn’t yet update your devices to 5.01 now is the time because Apple is expected to release iOS 5.1 very soon.
The exploits that are used to make the jailbreak possible on iOS 5.01 have been fixed in iOS 5.1 and will not work.
Although you can save your SHSH blobs for 5.01 it’s not possible to restore to iOS 5.01 on the iPhone 4S and the iPad 2 3G using Tiny Umbrella.
The current jailbreak (Absinthe) is Untethered and only available for Mac OS X for now.
If you want to unlock your iPhone 4S than you are advised to the 9A405-version of iOS 5.0.1 since this version is running on an older baseband for which an unlock possibility is expected.
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