If you are trying to run a Windows Service like the Diagnostic Policy Service and encounter an error instead that says, “Windows could not start the Diagnostic Policy Service”, worry not for this post will guide you on what you can do of the Diagnostic Policy Service is not running in your Windows 10 computer.
As you know, the Diagnostic Policy Service enables problem detection, troubleshooting, and resolution for Windows components on your Windows operating system. When you encounter this kind of problem, you will also see the “Access is denied” error message. This occurs when the “MpsSvc” process does not have the permissions needed for the Registry keys. This kind of problem happens when the TrustedInstaller account is missing the permissions for a Registry key and so to fix this issue, you need to take full control and ownership of the Registry keys.
You need to create a System Restore point first before you get started. This way, you can always undo the changes you’re about to make in case anything goes wrong. Once you’re done creating a System Restore point, refer to the following instructions to fix the “Windows could not start the Diagnostic Policy Service” error.
Step 1: Tap the Win + R key combination to open the Run utility.
Step 2: Type in “Regedit” in the field and tap Enter to open the Registry Editor.
Step 3: After opening the Registry Editor, navigate to this registry path:
HKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesDPSParameters
Step 4: After that, look for the “Parameters” registry key and select Permissions.
Step 5: Now select your account under Group or user names.
Step 6: Next, make sure that the “Full Control” and “Read” boxes are both checked, and then click on the Apply and OK buttons to save the changes.
Step 7: Afterwards, navigate to this registry key: HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlWDIConfig
Step 8: From there, look for the Config key and right-click on it and select Permissions and then click on Add and type “NT Service/DPS in the box and click OK.
Step 9: Now select “DPS” and check the Full control box, click OK and exit the Registry Editor.
Step 10: Reboot your computer and check if the error is now fixed.
| Option | Recommended use |
|---|---|
| Automatically select unsigned drivers | Useful for testing on computers that are running versions of Windows that do not require signed drivers. |
| Automatically select drivers built for older versions of Windows | Useful for testing driver compatibility with newer versions of Windows. |
| Automatically select all drivers installed on this computer | Provides maximum coverage in terms of the number of drivers that are tested on a system. This option is useful for test scenarios where a driver can interact with other devices or drivers on a system. This option can also exhaust the resources available for Special Pool and some resource tracking. Testing all drivers can also adversely affect system performance. |
| Select driver names from a list | In most cases, you will want to specify which drivers to test. Selecting all drivers in a device stack allows the Enhanced I/O Verification option to track objects and check compliance because an I/O request packet (IRP) is passed between each of the drivers in the stack, which allows for a greater level of detail to be provided when an error is detected. Select a single driver if you are running a test scenario that measures system or driver performance metrics, or if you want to allocate the greatest number of resources available for detecting memory corruption or resource tracking issues (such as deadlocks or mutexes). The Special Pool and I/O Verification options are more effective when used on one driver at a time. |
Error Causes
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Code 42 Error is referred to as a Device Manager Error code. Before we explain what this code indicates, it is important to understand what ‘Device Manager’ is and its functions.
Device Manager is basically a Windows tool that helps manage devices attached to the system such as the Printer, Scanner and the USB Device. The Device Manager Error code 42 occurs when a duplicate device is detected.
Error Code 42 is displayed in the following format:
“Windows cannot load the device driver for this hardware because there is a duplicate device already running in the system. Code 42”
Error CausesNarrowing down to one particular cause for error code 42 is not virtually possible because it may be triggered due to many underlying reasons. These include:
No matter what the reason for this error code,, to avoid inconvenience and to ensure proper hardware performance, it is advisable to fix it right away without any delay.
If you’re not technically sound, the code 42 message display can panic you. But don’t worry, the error message sounds complex but it is quite easy to fix.
To resolve code 42 in a few minutes, simply try the methods given below. These methods are easy-to-perform, effective and more importantly require no technical expertise.
Code 42 can pop up due to some temporary glitch in the Device Manager. By simply restarting your PC, you can resolve this problem.
Therefore, first things first, restart your system. However, in case it doesn’t work out, try other methods.
Launch the troubleshooting wizard to find the underlying problem and resolve it accordingly. To do this, proceed with the following steps:
Another method to fix code 42 is to use the System Restore tool to restore your PC to its previous working state before the error popped up. To do this,
Creating backup manually can be time-consuming and a painstaking task. The best way to create backup and restore your PC to its normal state is to download DriverFIX.
It is a user-friendly device driver management software that helps create data backup automatically and simultaneously restores your PC back to its normal working state in a few seconds.
This software is compatible with all Windows versions.
Click here to download DriverFIX on your system to resolve error code 42.
Stop: 0x0000000A (parameter1, parameter2, parameter3, parameter4) IRQL_NOT_LESS_OR_EQUAL *** Address x has base at x - filename
Error CausesError code 0x80070070 can be presented when there is not enough drive space on the computer to install updates. It is possible to uninstall apps that are not often used, or you may delete or archive files that are no longer needed, you may even add on some removable storage space to free up the internal memory of the computer. The computer needs a significant amount of internal memory in order to be able to update the operating system properly. When the computer fails to have the amount of memory that is needed to perform the update, the error code 0x80070070 will be presented. If this error message is not resolved, your computer might be opened to other error messages, including error code 0x80072EE2.
Common symptoms include:
Error CausesThe Windows 10 upgrade error is caused by varying factors including a lack of computer space or resources, malware or virus infestation, or a clogged registry on the computer. The error code 0x80070070 will present itself when there is not enough free space on the computer to perform the necessary updates on the computer. Too many apps or programs downloaded onto the computer, too many photos, or too much music may also contribute to the lack of storage space on the computer, thus contributing to the error, and the computer not being able to install the updates to the operating system properly.
It is important to know how much space there is on the computer to start with prior to trying to free up any space. Use the free program on the computer called the Disk Cleanup tool. This will save time and free up some hard drive space while optimizing the computer to work better.
From the Start menu, browse to the Explore option, and then select This PC. Right-click on the C drive, and then select Properties. Select Disk cleanup. From here, select the options that you would like to clear. Make sure that the recycle bin is emptied of any temporary files or any error logs. Once done, select Okay.
Use this same process to clear the system files after an update from Windows, as they may still have files from the old operating system in place.
Go through your computer and remove any unwanted apps that are present. There are sure to be some that you do not use or do not want.
Follow these steps: From the Start menu, select Settings. Then, select System, Apps, and Features. When you have found the program that you would like to uninstall, select it and then select Uninstall. NOTE: some apps that are built into Windows do not have the capability to be uninstalled. Once you have selected Uninstall for the app or program, follow all directions that appear on the screen.
If none of the above methods work, add more storage. To acquire more storage, you can incorporate devices such as SD cards, USB flash drives, and even external hard drives.
Error Code 0x80072efe is a fairly common error code that generally occurs in Windows 10. It is most often associated with the process of performing updates using the Windows Update tool.
Common symptoms include:
While Error Code 0x80072efe can cause a number of frustrating issues on your device, the good news is that there are several methods that can be used to fix this error. The two most common methods are actually fairly easy to perform and do not require advanced tools or knowledge. However, if you don’t feel like you will be able to perform the necessary steps on your own, be sure to get in touch with a qualified computer repair technician to help you in the resolution of this particular error.
Error CausesTwo things are generally behind the appearance of Error Code 0x80072efe on a Windows device. The first is that one or more of your registry keys are not available, have been corrupted, or are not installed properly. The second is that necessary DLL files aren’t working properly within your machine.
However, other things can mimic these causes, which is why the two methods listed below will resolve the issue in most cases.
Fortunately, there are two resolution methods that can be used quickly and easily when Error Code 0x80072efe arises on your Windows computer. Neither of these requires advanced knowledge or skill, but if you don’t feel comfortable with performing these steps on your own, it is recommended that you contact a qualified computer repair technician in order to get assistance.
Here are the best ways to resolve Error Code 0x80072efe on your computer:
If your time or date has been set incorrectly, it can make your system logs appear to have incorrect information, which can lead to the appearance of Error Code 0x80072efe. Because this is the easiest thing to fix if it is indeed the problem that is making the error code appear, this should always be the first thing that you try when this error code arises.
In order to check your time and date settings, follow these simple steps:
If method one has not successfully resolved Error Code 0x80072efe, you may need to attempt method two.
In some cases, your firewall can prevent your machine from accessing the information that it needs in order for the installation or update to go through correctly. If that is the case, you can follow a few simple steps to turn off your firewall, just while you install the update, and then turn it back on.
In order to do so, follow these steps:
Note that if this method allows you to successfully bypass the error code, you’ll need to make sure to turn the firewall back on when you are finished. Even though it can interfere with the Update process, your firewall is still very important to your computer.
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