How to turn off Data Execution Prevention (DEP) – 4sysops. This article explains how Data Execution Prevention (DEP) works and how to turn it off and on in Windows 7, Windows Vista, and Windows Server 2. In Windows Vista, occasionally you may need to take ownership of certain files that not belong to you, and then assign read, write, modify, traverse, or full control. Error 1310 problem occurs while installing a product if you are installing it from a Terminal Server Session. This will fix error 1310 Windows 8/8.1, 7 and Vista. ![]()
R2). Andreas Kroschel is a former IT journalist and works now as an IT admin in Germany. Latest posts by Andreas Kroschel (see all)Data Execution Prevention (DEP) is a security feature of the CPU that prevents an application from executing code from a non- executable memory region. This is supposed to prevent buffer overflow attacks from succeeding. Since Microsoft introduced support for Data Execution Prevention (DEP) on Windows XP Service Pack 2 and Windows Server 2. Service Pack 1, it’s included in every version of Windows. How DEP works: Hardware enforcement and the role of the OS ^Data execution prevention works by marking certain memory pages being indented to hold only data and no executable code. This is achieved by setting a special bit in its page table entry called NX, for No e. ![]() ![]() ![]() Xecute, or XD, for e. Xecute Disabled, respectively. It’s the responsibility of the OS to set the NX bit for the stack and heap memory areas. ![]() If a malfunctioning program – or malware – should try to execute code from an NX- marked memory page, the CPU will refuse to do so and trigger an interrupt instead, which causes the OS to shut down the application accordingly. Turn on and turn off DEP support in Control Panel ^DEP can not only prevent the execution of malware or malfunctioning applications, but it may also highlight problems with legacy (not DEP- compliant) software, which can cause it to crash. Another potential problem is the support for third- party plugins such as those found in browsers or office applications: While the application itself may be DEP compliant, chances are that one or more of the plugins aren’t. Microsoft recommends updating your software if it’s experiencing crashes with DEP, but this is not always possible. For such situations, DEP support in Windows can be configured to meet the user’s needs, handling exceptions for certain software. Some limitations exist when you turn off or turn on DEP support, however. Because DEP support is a kernel mode option, it must be configured as a boot option. Thus, it is not possible to manage and deploy DEP settings centrally by group policies; they have to be configured at the local machine in each case and need a reboot of Windows to take effect. The settings GUI can be invoked this way: Open Control Panel, click on System and Security . In the Advanced tab, click on the Settings button in the Performance section (the first one). In Performance Options, Data Execution Prevention has its own tab. Here you can turn on DEP support for Windows essential programs and services only (Opt. In, default on Windows 7 workstation) or for all programs, with the possibility to define exceptions for non- compliant software (Opt. Out, default on Windows Server 2. R2). This can be achieved via the Add button, where a local administrator can add non- compliant executable files one by one. Exceptions can also be configured as a Disable. First off, don’t switch between red and white if a recipe calls for one or the other. Red is more tannic than white, which means it gets bitter faster as it reduces.NX compatibility fix using the Application Compatibility Toolkit (ACT). The resulting Custom Compatibility Database can be deployed in the Active Directory. Note that those kinds of exceptions do not show up in the DEP support configuration GUI. Turn off and turn on DEP support as a boot option ^There are two more DEP settings for a Windows machine. These settings cannot be configured in the control panel but only as a boot option via the service program bcdedit in a command prompt with elevated rights. One possible choice is to turn on DEP support unconditionally. Any Disable. NX compatibility options will also be ignored. The opposite is to turn off DEP support completely. To return to one of the GUI switchable modes, use. The Windows machine must be rebooted each time for the bcdedit command to take effect. The output of the command: will tell the current status in each case. This article has been translated from German language. You can find the original posting: Datenausf. Fix for Blank or Empty Windows Features List in Vista and 7. If you’ve uninstalled a program in Windows Vista or 7 from Control Panel, perhaps you’ve noticed “Turn Windows features on or off” in the left pane. When you click on it, the Windows Features dialog will appear asking you to “Please wait” and it will start searching for a list of windows features such as games, indexing service, internet information services (IIS) and other system components that you can turn on or off. Vista and 7’s Windows Features list is actually pretty much the same as Add/Remove Windows Component in Windows XP. You can also run Windows Features by typing “optionalfeatures” at the run dialog or command prompt. One of the most common problems that many people are facing with the Windows Features dialog is the window comes out empty or blank and the features list doesn’t appear. You can see “please wait” initially as it tries to make up a list but then it totally blanks out. Microsoft of course is well aware of this problem and they’ve created a knowledge base article 9. The first method is to run the sfc /scannow command to scan all protected system files and replace incorrect versions with the correct Microsoft versions. If that didn’t work, they recommend a System Restore. We can assure you that all these above solutions don’t work. One of the only known recommended solutions that will fix the blank Windows Feature is to re- install Windows but that’s rather overkill just to fix a blank window. Don’t worry though, because we’ve found a REAL fix for the empty Windows Features problem without re- installing Windows. What we’ve found is that this problem is most often caused by missing or corrupt files in a folder called C: \Windows\Servicing\Packages. The reason why SFC or System Restore don’t work is they don’t restore anything in the Packages folder and therefore miss the problem altogether. Here’s how to get your features window populated again. Download the System Update Readiness Tool from Microsoft. Expand the Download Center by using the “+” and download the correct version of the tool according to your operating system. For convenience, the links to the Vista and 7 Readiness Tool are provided below. Download System Update Readiness Tool for Windows Vista 3. Download System Update Readiness Tool for Windows Vista 6. Download System Update Readiness Tool for Windows 7 3. Download System Update Readiness Tool for Windows 7 6. Once you have finished downloading the file, close all running programs and run it, the Readiness Tool has an extension of . Click OK to install the KB****** update for Windows. You will see that it looks as though an update is being installed, but actually it’s trying to fix any problems that it finds on the system in the background using checksur. This will take a while, up to 1. When installation has completed, click Close and restart your computer. Once Windows has booted, try running Windows Features (optionalfeatures. IF not, continue to the next step. Go to C: \Windows\Logs\CBS\ and open the Check. SUR. log file with notepad. The following steps are possibly going to be a little tricky because everyone gets different results in the log file. Take note of the section that says “Checking Package Manifests and catalogs” in the Check. SUR. log file. If there are errors, you will see a line starting with (f) followed by an error code and path. If you see (fix) on the next line below the (f), it means the tool managed to fix that particular error. As you can see in the image above, the fourth and eighth (f) lines highlighted in pink don’t have (fix) on the next line and are therefore not fixed as the checking continues. You need to make a note of all the unfixed “MUM” entries in your log file (line 4 above is a MUM error that wasn’t fixed). Now you will need to manually delete the related registry keys according to what you see in the Check. SUR. log file. Run regedit and go to the following location. HKEY. There won’t be a need to use the . As long as the whole name matches without the extension, you can delete it. You WILL need to set full control permission before you can delete the corrupted registry key. Refer to this article on how to set the permissions for the key. After deleting all the corrupted registry keys, the Windows Features should start to show in the list. The good thing about running the System Update Readiness Tool is it might fix some other problems which you are probably not aware of.
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