A Quick Guide to Resolving Error Code 707

Hive ransomware has been targeting Microsoft exchange servers lately vulnerable to ProxyShell security issues in order to deploy various backdoors. Once the backdoor has been placed various attacks can be performed including but not limited to network reconnaissance, stealing admin accounts, taking valuable data, and even installing and deploying file-encrypting algorithms.

ProxyShell wide abuse

ProxyShell is a set of three vulnerabilities in the Microsoft Exchange Server that allows remote code execution without authentication on vulnerable deployments. The flaw has been used in past by various ransomware like Conti, BlackByte, Babuk, Cuba, and LockFile.

Security vulnerabilities have been reported to be fully patched on May 2021 but how Hive was able to still be successful in exploiting PowerShell and infiltrating into the system there seems to be still some unpatched and open issues.

Hive

Hive has gone a long way since it was first observed in the wild back in June 2021, having a successful start that prompted the FBI to release a dedicated report on its tactics and indicators of compromise.

In October 2021, the Hive gang added Linux and FreeBSD variants, and in December it became one of the most active ransomware operations in attack frequency.

Last month, researchers at Sentinel Labs reported on a new payload-hiding obfuscation method employed by Hive, which indicates active development.

If you are running the Windows Update service but decided to stop it but you encountered an error message instead that says, “The Windows Update service could not be stopped”, read on as this post will help you fix the problem. This kind of error appears when you use the Command Prompt to stop the Windows Update service, especially if you are using cmd without admin privileges. A lot of users reported that they were not able to disable the automatic Windows Update in Windows 10 using Command Prompt. The command used to stop the Windows Update service is the “net stop wuauserv” command. However, when some users executed this command, they got the error message. So if you are one of these users that can’t stop the Windows Update Service via Command Prompt, you can try to fix that using PID as well as checking the Service dependencies. For more details, follow the given options below.

Option 1 – Try to stop the Windows Update service via PID

In case you don’t know, each running service or process has its own unique ID or PID and you can find it in the Task Manager. You can use it to stop the Windows Update service. How? Refer to these steps:

• Tap the Ctrl + Shift + Esc keys to open the Task Manager.
• Next, go to the Services tab and look for the service named “wuauserv” and get its PID.
• After that, type “cmd” in the Windows Start search and right-click on Command Prompt from the search results and then select the “Run as administrator” option.
• After opening Command Prompt with admin privileges, execute this command: taskkill /f /pid <PID>

Note: You need to replace “<PID>” with the PID of the “wuauserv” service. For instance, the PID is 6676, then this is how the command should be “taskkill /f /pid 6676”.

• After you execute the command, you will this message on your screen, “SUCCESS: The process with PID 6676 has been terminated” which indicates that you have stopped the Windows Update service successfully.

Option 2 – Try to check the Service dependencies

Dependencies of a Windows Service in Windows 10 are when windows services depend on other services. Such is the case with the Windows Update service – it also depends on three different services such as the Remote Procedure Call or RPC service, DCOM Server Process Launcher, and the RPC Endpoint Mapper. Meaning to say, if two of these services are not working as expected, then the dependant service will also be affected. This could be the reason why the Windows Update service could not start.

• Tap the Win + R keys to open the Run dialog box.
• Next, type “services.msc” in the field and hit Enter to open Windows Services.
• From the list of Services, look for the following services:
  • Remote Procedure Call (RPC) Service
  • DCOM Server Process Launcher
  • RPC Endpoint Mapper
• After you find these services, double click on each one of them and check whether the Startup type for all is set to Automatic and the Service status is set to Running or not.
• If the service status is not running, then click the Start button. Afterward, check if you can now run the Windows Update service.

The fltmgr.sys file or the Filter Manager is the one that’s responsible in making sure that all the file stored in a computer’s hard drive stays on their respective locations and is located in C:/Windows/System32/drivers. Now when you encounter a Blue Screen of Death or BSOD error saying, “Your PC ran into a problem that it couldn’t handle, and now it needs to restart. SYSTEM_SERVICE_EXCEPTION”. This kind of Stop error is due to an error with the driver that’s responsible for enabling the communication between the hardware and the computer. It indicates that this driver allows direct access to the internal hardware from the CPU itself. What’s worse about the SYSTEM_SERVICE_EXCEPTION BSOD error is that there are times when you won’t be able to log in to your computer even after it reboots. However, you need not worry as this post will guide you into fixing this BSOD error. All you have to do is follow the given options below carefully and that before you proceed make sure that you create a System Restore point just in case something goes wrong.

Option 1 – Run the Windows Update

Obviously, since the fltmgr.sys file is a system file from Microsoft, you can try running the Windows Update and see if it fixes the problem or not.

Option 2 – Run the System File Checker

The System File Checker, also known as the SFC scan, is a built-in utility in Windows that can be found in the C:/Windows/System32 folder. This tool allows you to scan and restore any corrupted system files in Windows that might be causing the SYSTEM_SERVICE_EXCEPTION BSOD error. To use this tool, follow the steps below.

• Tap Win + R to launch Run.
• Type in cmd in the field and tap Enter.
• After opening Command Prompt, type in sfc /scannow

The command will start a system scan which will take a few whiles before it finishes. Once it’s done, you could get the following results:

1. Windows Resource Protection did not find any integrity violations.
2. Windows Resource Protection found corrupt files and successfully repaired them.
3. Windows Resource Protection found corrupt files but was unable to fix some of them.

• Restart your computer and then check if it has fixed the error or not.

Option 3 – Run the Blue Screen Troubleshooter

The Blue Screen troubleshooter is a built-in tool in Windows 10 that can be found on the Settings Troubleshooters page. To use it, refer to these steps:

• Tap the Win + I keys to open the Settings panel.
• Then go to Update & Security > Troubleshoot.
• From there, look for the option called “Blue Screen” on your right-hand side and then click the “Run the troubleshooter” button to run the Blue Screen Troubleshooter and then follow the next on-screen options. Note that you might have to boot your PC into Safe Mode.

Option 4 – Check your hardware for any physical issues

There are times when faulty hardware can result in serious problems in the system such as the SYSTEM_SERVICE_EXCEPTION Blue Screen error. Thus, it is highly recommended that you check the internal components of your CPU to find out if there are any problems. And if there is any physical damage, you need to bring that to a technician to get it fixed or have it replaced.

Option 5 – Run the CHKDSK utility

You can also run the Chkdsk utility to resolve the BSOD error. The Chkdsk utility is the one that repairs hard drive errors that might be causing the problem.

• Open Command Prompt with admin privileges.
• After opening Command Prompt, execute the commands listed below, and don’t forget to hit Enter right after you type in each one of them and if you have installed Windows to some different directory, you must replace “C” with the name of the drive you’ve installed Windows with.
• chkdsk C: /r /x
• chkdsk C: /f

Hacker group recently came up with claims that they have stolen data from 100 million T-Mobile customers. T-Mobile has responded with confirmation it has been compromised and that over 40 million records were stolen, among them are not just present customers, but anyone who has applied for T-Mobile service as well as past accounts.

What has been stolen?

Report from T-Mobile states that stolen records included first and last name, date of birth, social security number, driver’s license & ID information. The company said that it has “no indication that the data contained in the stolen files included any customer financial information, credit card information, debit or other payment information.” Not really a reassuring statement meaning that they really do not know, but even if the statement is true, already stolen information is as much if even not more damaging and devastating as payment information.

What T-Mobile is planning to do now?

It is stated that the hole used for the hack has been addressed and closed so no more data can be stolen. Considering people that had their personal information compromised, T-Mobile said it is planning to reach out to them and offer them two years of free identity protection through McAfee’s ID Theft Protection Service. Additionally, T-Mobile recommends postpaid customers change their PIN by going online into their T-Mobile account or calling T-Mobile customer service by dialing 611 on their phone. The company also recommends a feature called Account Takeover Protection that prevents unauthorized individuals from stealing a phone number and porting it out of T-Mobile. Finally, the company will publish a website “for one-stop information and solutions to help customers take steps to further protect themselves.”

Error 1753 - What is it?

Error 1753 is an RPC endpoint mapper error code. This code is typically displayed as "EPT_S_NOT_REGISTERED" or sometimes as the hexadecimal value 0x6D9.  Error 1735 indicates that there are no more endpoints available from the endpoint mapper. To understand this better, basically, RPC is an inter-process communication (IPC) method. This is used by clients and servers for communication purposes. RPC is used by programs to execute programs on a server computer. The perfect example of this is Microsoft Outlook. You communicate with Microsoft Exchange Server using RPC. This enables you to send and receive emails. When you use Microsoft Outlook to send emails, your computer sends a message to the server computer in an obscure coding. The server responds to your computer with another message that contains the results of the executed program. This is all being carried at the backend of the running program. Integral to this is the endpoint. The endpoint includes the name, port, or a group of ports on a computer that is monitored by the server for incoming client requests. This is a network-specific address to be precise. The endpoint mapper is the part of the RPC subsystem that is responsible for dynamically assigning endpoints to the server. When this function fails it leads to error 1753 message display. It shows that RPC service is not available.

Solution

Error Causes

The error code 1753 indicating RPC endpoint mapper service failure is triggered due to multiple reasons. These include:

• Windows registry damage and corruption
• Malfunctioning of the hardware
• Spyware intrusion or viral infections
• Device driver conflicts

Further Information and Manual Repair

This error code may cause a great deal of inconvenience to execute programs that are dependent on the server. It can lower your productivity and performance. To avoid the hassle, it is advisable to repair the error 1753 immediately. The best way to resolve this error 1753 in seconds is to download Restoro. By using this repair tool, you can fix the error right away for free without paying hundreds of dollars to a professional expert. Restoro is a new and innovative PC fixer integrated with an automated algorithm and intuitive technology that enables users to sit back and relax while Restoro runs on the system and detects all PC-related issues in the shortest time. In just a few clicks you can resolve even the mightiest PC issues like the error code 1753 RPC endpoint mapper problem and resume back to the program in no time.

Why Restoro

It is efficient and user-friendly. Restoro can be used by users of all levels so even if this is your first experience using a repair tool, you don’t have to worry. To operate it, you don’t have to be a computer programmer or have sound technical expertise. It is simple and very easy to use. The layout is simple and neat complimented nicely with easy navigation and a sophisticated user interface. Restoro is a high and multi-functional error tool embedded with powerful, performance-driven, and value-adding utilities, all in one. So, whether the error code 1753 is triggered due to a viral infection on your system or registry corruption, you don’t have to look for different tools to resolve the error, simply run Restoro to fix the issue right away. Restoro includes a dynamic registry cleaner that detects all registry issues and wipes out the clutter from the hard disk like junk files, internet history, and invalid entries which is by the way the number cause for registry corruption leading to error 1753. It clears up disk space and RAM and repairs the misconfigured system files and corrupt registry in seconds thus resolving error 1753. Restoro also functions as a system optimizer thus boosting the speed and performance of your PC massively and reducing boot time. In addition to this, it also has a backup feature.  This tool is embedded for safety purposes. This feature enables you to create backup files on your PC before you start system repair. This helps you recover data in the event of data loss during system repair. To get started:

• Click here to download and install Restoro on your system
• After installation, run it to scan for errors like 1753
• Now press the repair tab to resolve

There is a lot of software on the market today, but from time to time we discover something extraordinary and unique worth sharing and today we have a threat for you. Ventoy is a tool that will help you with system reinstallations and system maintenance once and for all.

If you are a computer user that has multiple operating systems or you are installing and maintaining different hardware via different OS there is a high chance that you have multiple USB sticks with different operating systems on them.

Now the problem with that is that there are probably too many unlabeled sticks around or you do not have enough so you keep making system USBs depending on which one you might need.

Ventoy solves all of these problems by letting you have as many operating systems images as your USB has capacity. The only thing you need to do is get the software here: https://www.ventoy.net/en/index.html and make a USB with it, then you can freely just copy your ISO images onto the USB and once it is inserted into the computer you will be given a menu to choose which one you would like to start with, simple as that.

Features

• 100% open source (license)
• Very simple to use (Get started)
• Fast (limited only by the speed of copying the iso file)
• Can be installed in USB/Local Disk/SSD/NVMe/SD Card
• Directly boot from ISO/WIM/IMG/VHD(x)/EFI files, no extraction needed
• Support to browse and boot ISO/WIM/IMG/VHD(x)/EFI files in local disk Notes
• No need to be continuous in disk for ISO/WIM/IMG/VHD(x)/EFI files
• Both MBR and GPT partition styles are supported
• x86 Legacy BIOS, IA32 UEFI, x86_64 UEFI, ARM64 UEFI, MIPS64EL UEFI supported
• IA32/x86_64 UEFI Secure Boot supported Notes
• Linux Persistence supported Notes
• Windows auto installation supported Notes
• Linux auto installation supported Notes
• Variables Expansion supported for Windows/Linux auto-installation script Notes
• FAT32/exFAT/NTFS/UDF/XFS/Ext2(3)(4) supported for main partition
• ISO files larger than 4GB supported

• Menu alias, Menu tip message supported
• Password protect supported
• Native boot menu style for Legacy & UEFI
• Most types of OS supported, 1000+ iso files tested
• Linux vDisk(vhd/vdi/raw...) boot solution Notes
• Not only boot but also complete the installation process
• Menu dynamically switchable between ListView and TreeView mode Notes
• "Ventoy Compatible" concept
• Plugin Framework and GUI plugin configurator
• Injection of files into runtime environment
• Boot configuration file dynamically replacement
• Highly customizable theme and menu style
• USB drive write-protected support
• USB normal use unaffected
• Data nondestructive during a version upgrade
• No need to update Ventoy when a new distro is released

A couple of Windows 10 users recently reported getting an error that says, “The group or resource is not in the correct state to perform the requested operation” while opening UWP Applications as well as accessing the File Explorer. You can encounter this kind of error mostly on File Explorer, Microsoft Store application, and other UWP applications. This indicates that this error occurs during both the Windows Classic Application and the Universal Windows Platform Applications. There are several ways to fix this error. You can try to run a System File Checker scan, or run the DISM tool or the Program Compatibility troubleshooter or Windows Store Apps troubleshooter or try to reset or reinstall Windows 10 or the affected application that's not working. However, before you do any of these troubleshooting tips, you can try to perform System Restore first as it could undo the changes you’ve made in the system which might have caused the error.

• Tap the Win + R keys to open the Run dialog box.
• After that, type in “sysdm.cpl” in the field and tap Enter.
• Next, go to the System Protection tab then click the System Restore button. This will open a new window where you have to select your preferred System Restore point.
• After that, follow the on-screen instructions to finish the process and then restart your computer and check if the problem is fixed or not.

If System Restore wasn’t able to fix the error, then you can refer to each one of the following options.

Option 1 – Try to use the DISM tool

You might want to repair potentially corrupted files in your system as having them could also trigger the “The group or resource is not in the correct state to perform the requested operation”. To repair these corrupted system files, you can run the DISM commands:

• Tap the Win + X keys and click on the “Command Prompt (Admin)” option.
• After that, input each one of the commands listed below sequentially to execute them:
  • Dism /Online /Cleanup-Image /CheckHealth
  • Dism /Online /Cleanup-Image /ScanHealth
  • Dism /Online /Cleanup-Image /RestoreHealth

• Once you’ve executed the commands given above, restart your computer and check if the DCOM error is now fixed.

Option 2 – Run the System File Checker Scan

Aside from the DISM tool, you can also run a System File Checker scan. It is another built-in command utility that helps in restoring corrupted files as well as missing files. It replaces bad and corrupted system files to good system files that might be the cause why you’re getting the error. To run the SFC command, follow the steps given below.

• Tap Win + R to launch Run.
• Type in cmd in the field and tap Enter.
• After opening Command Prompt, type in sfc /scannow

The command will start a system scan which will take a few whiles before it finishes. Once it’s done, you could get the following results:

1. Windows Resource Protection did not find any integrity violations.
2. Windows Resource Protection found corrupt files and successfully repaired them.
3. Windows Resource Protection found corrupt files but was unable to fix some of them.

• Reboot your computer.

Option 3 – Try to run the Program Compatibility Troubleshooter

You might also want to run the Program Compatibility Troubleshooter. This built-in troubleshooter is available in the Windows Update & Security section. From there, select Troubleshoot. This will find a list of programs for you and since you have already downloaded the driver files, just click on Not Listed located at the top of the program list. After that, browse and select the driver files and then let the program do its job. In addition, you can try to run the Windows Store apps troubleshooter as it can also help you resolve the problem.

Option 4 – Reset your computer

• Tap the Win key or click on the Start button located in the Taskbar.
• Then click on the Power button at the bottom right portion of the screen.
• Next, press and hold the Shift key on your keyboard and then click on Restart. This will restart your Pc into the Advanced Startup options.

Note: Once you have access to the Advanced Startup options, you have to go to the setting which allows you to Reset your Windows 10 PC. All you have to do is select Troubleshoot > Reset this PC to reach the following screen

• Afterward, select either the “Keep my files” option and then proceed to the next on-screen instructions that follow to reset your Windows 10 computer without losing your files.

It is no secret that Fortnite is one of the most played games in the world. Epic has done a great job offering it to plenty of other platforms with cross-play feature meaning that you can play with your friends no matter on what platform they are on. But how Fortnite is a piece of software which is constantly updated and maintained it is pretty normal to have some bugs or issues from time to time. One of the before-mentioned issues is a connection issue or unable to connect to game servers. In our article, we will go through common fixes and solutions in order to get you back in-game as fast as possible. Keep on reading.

Check the Epic Games Status page

Check the Epic Games Server Status page to make sure all systems are operational. If the issue you’re experiencing is related to an outage or system-wide issue, you won’t be able to connect to the Epic Games Launcher or Fortnite until it's resolved.

Use a wired connection

Wireless connections are not as stable as wired connections. This means that the signal can be unreliable and result in packet loss, connection problems, or higher latency or ping. Connect directly to your modem or router with an Ethernet cable to eliminate this possibility and have the fastest connection possible.

Disable your firewalls

Often the quickest way to fix connection problems due to firewalls is to temporarily uninstall and/or disable it.

Windows Firewall disable guide:

1. Click on Start.
2. Click on Control Panel.
3. Click on System and Security.
4. Click on Windows Firewall.
5. Click on Turn Windows Firewall on or off (You might need to provide the Administrator password at this step)
6. Under each Network location, select the Turn off Windows Firewall option

Uninstall any other firewalls

Using a third-party firewall may prevent you from being able to connect to the Epic Games Launcher, Fortnite, or another Epic Games product. We recommend removing any third party firewalls temporarily to see if this resolves your issue. If it does resolve the problem, make sure to add the following executables as exceptions to your firewall:

Epic Games Launcher

• C:\Program Files (x86)\Epic Games\Launcher\Engine\Binaries\Win64\EpicGamesLauncher.exe
• C:\Program Files (x86)\Epic Games\Launcher\Engine\Binaries\Win32\EpicGamesLauncher.exe

Fortnite

• C:\Program Files\Epic Games\Fortnite\FortniteGame\Binaries\Win64\FortniteClient-Win64-Shipping.exe
• C:\Program Files\Epic Games\Fortnite\FortniteGame\Binaries\Win64\FortniteClient-Win64-Shipping_BE.exe
• C:\Program Files\Epic Games\Fortnite\FortniteGame\Binaries\Win64\FortniteClient-Win64-Shipping_EAC.exe
• C:\Program Files\Epic Games\Fortnite\FortniteGame\Binaries\Win64\FortniteLauncher.exe

Contact your firewall manufacturer for instructions on how to add these as exceptions to it as this varies between them.

Unblock your network ports

Network ports allow certain types of data to be successfully sent over a network that is used by our services. If you have any of these blocked, it may result in you being unable to connect to our games or use our services properly. To unblock your ports on your router do the following:

Windows

First, you will need to get your default gateway and internal IP address:

1. Click on Start.
2. Type cmd and press Enter.
3. Type ipconfig and press Enter.
4. Take note of your Default Gateway and IPv4.

Configuring your router to unblock the ports

1. Open your web browser.
2. Type your Default Gateway into the address bar and press Enter. (A common Default Gateway is 192.168.1.1)
3. You may be asked for a username and password. This varies for each router. Before entering anything, try just hitting OK. If that doesn't work, try the common default username and password below: Username: admin Password: password If these don't work, you can check this website for a list of usernames and passwords based on your router model.
4. Locate the Port Forwarding page in the administration tool and click on it.
5. Make sure you have Port Forwarding selected and not Port Triggering as this is completely different.
6. On this screen, you will need to enter the ports and port ranges below with the correct protocol and local IP of which you took note of above: 80 (TCP/UDP), 433 (TCP), 443 (TCP), 3478 (TCP/UDP), 3479 (TCP/UDP), 5060 (TCP/UDP), 5062 (TCP/UDP), 5222 (TCP), 6250 (TCP/UDP), and12000-65000 (TCP/UDP).

If you have any trouble doing the above on your router, make sure to check out the router manufacturer's support site for additional instructions as these will vary from router to router.

VPN and Proxy Servers

Do NOT use VPN or Proxy Servers. These cause issues that can't be resolved by us without having you disable them. Check out this article for information on how to disable your proxy server.

Switch Domain Name Systems (DNS)

Switching your DNS can result in better connectivity and performance for your internet connection. There are two different DNS services we recommend to have you try if you are having issues with your connection. Below are the followings links with instructions on how to change your DNS:

• GoogleDNS
• CloudflareDNS

Epic Games Launcher: Edit your Engine.ini file (Windows only)

Editing these settings can result in better download speeds using the Epic Games Launcher:

1. Click on Start.
2. Type %localappdata% and press Enter.
3. Open the EpicGamesLauncher
4. Open the Saved
5. Open the Config
6. Open the Windows
7. Open ini and add the following lines to it: [HTTP] HttpTimeout=10 HttpConnectionTimeout=10 HttpReceiveTimeout=10 HttpSendTimeout=10[Portal.BuildPatch] ChunkDownloads=3 ChunkRetries=20 RetryTime=0.5
8. Save the file and open the Epic Games Launcher.

If you are trying to install or upgrade your Windows 10 computer but suddenly encountered an error message saying, “Windows could not configure one or more system components”, read on as this post will show you how you can fix the problem. You are not alone in experiencing this problem as other users also reported having the same scenario. Some of them reported getting the following error message:

“Windows could not configure one or more system components. To install Windows restart the computer with error code 0xc1900101-0x30018.”

When you check on the Windows 10 rollback log, you will see a part with the “iisetup.exe” that’s related to the abort. Usually, the upgrade process completes over 50% and gets stuck and then rolls back later on and generates the error logs. This kind of error, in most cases, appears during the upgrade of Windows 10 and is related with the Internet Information Services or IIS in Windows 10. For some unknown reason, it restricts the installation or the upgrade which causes the error to appear. To fix the “Windows could not configure one or more system components” error, you can try to remove the IIS from the Windows Features or rename the “inetsrv” folder. You could also move all the folders related to IIS to another drive. For more details, refer to the options provided below.

Option 1 – Try to remove the IIS from Windows Features

The IIS is installed from the Windows Features and you can find it at Control Panel > Programs. From there, uncheck the checkbox for the Internet Information Services. Once done, click on the OK button to save the changes. Note that this process will get rid of all the related programs, services, and folders from Windows 10. So if you want to, you can just install them later on or use an offline installer from the official site of Microsoft.

Option 2 – Try renaming the inetsrv folder

The next option you can check out to resolve the problem is to rename the “inetsrv” folder. If you have uninstalled IIS from the Windows Features, this should remove the folders as well, however, it didn’t remove the folder then you have to delete the folders that are related to the IIS by following these steps:

• First, you have to boot into the Advanced Recovery Mode and from there, open Command Prompt.
• Next, execute this command to rename the folder from this location, C:Windowssystem32inetsrv: rename C:/Windows/system32/inetsrv/inetsrv.old
• Once done, boot into your computer normally and try to upgrade Windows 10 again, and check if the problem is fixed or not.

Option 3 – Try to move the folders related to IIS to a different drive

• Tap the Win + R keys to launch the Run utility and type “services.msc” in the field and hit Enter to open the Windows Services Manager.
• Next, look for the Application Host Helper Service from the list of services and stop it.
• Once done, take ownership of the “WinSxS” folder and then move the *windows-iis*.*” folders to another drive. You can just search using the “*windows-iis*.*” keyword in the Start Search.
• Next, tap the Ctrl + X keys and paste the folders to another drive.
• After that, start the update process for Windows 10 again.

If you were trying to open File Explorer but it suddenly stopped working and you encounter an error message that states, “An attempt was made to reference a token that does not exist”, read on as this post will guide you in fixing this problem. This problem was initially reported after the April Update and Microsoft was able to fix it right after correcting the build. However, this effort seems futile for some users as recently, some reported getting the same error when they try to open not just Windows File Explorer but also with utilities like Microsoft Management Console or MMC, Visual Studio, Task Manager, Printer, Recycle Bin, etc. Two of the most likely causes of this error are a troublesome Windows Update and corrupted system files. Whatever the cause is, here are some suggestions you can follow to fix the “An attempt was made to reference a token that does not exist” error.

Option 1 – Try to re-register the problematic DLL file

You may have to re-register the ntdll.dll file using the regsvr32.exe before you can successfully install the program and fix the ntdll.dll file crash error. The Regsvr32 tool is a command-line utility that can be used to register and unregister OLE controls like DLL and ActiveX (OCX) control in the Windows operating system. Follow the steps below to use it.

• Open Command Prompt as admin from the WinX menu.
• Next, type the following commands in the elevated Command Prompt and hit Enter to execute the command. This will re-register the affected DLL file using the Windows operating system tool, regsvr32.exe.
  • exe /[DLL file]
  • exe [DLL file]

Note: Replace “[DLL file]” with the name of the DLL file that was pointed out in the error.

• After you execute the given commands, you should see a message saying, “DllRegisterServer in vbscript.dll succeeded” if the Regsvr32 tool was able to run successfully. After that, try to install the program again and see if it now works.

Option 2 – Replace the DLL file from a trusted source

• First, you need to get the new DLL file from another computer with preferably the same file version number.
• After that, you need to boot your PC into Safe Mode and navigate to the paths listed below and then replace the file using a USB drive or other external storage devices.
  • x86: This PC > C:/Windows/System32
  • x64: This PC > C:/Windows/SysWOW64
• Next, type “cmd” in the Cortana search box and right-click on Command Prompt, and select “Run as administrator” to open it with administrator privileges.
• Now type the “regsvr32 ntdll.dll” command and hit Enter.
• Restart your PC and check if the error is now fixed.

Option 3 – Perform a System File Checker scan

The System File Checker or SFC scan could detect and automatically repair damaged system files that could be causing the “An attempt was made to reference a token that does not exist” error to pop up. SFC is a built-in command utility that helps in restoring corrupted files as well as missing files. It replaces bad and corrupted system files with good system files. To run the SFC command, follow the steps given below.

• Tap Win + R to launch Run.
• Type in cmd in the field and tap Enter.
• After opening Command Prompt, type in sfc /scannow and hit Enter.

The command will start a system scan which will take a few whiles before it finishes. Once it’s done, you could get the following results:

1. Windows Resource Protection did not find any integrity violations.
2. Windows Resource Protection found corrupt files and successfully repaired them.
3. Windows Resource Protection found corrupt files but was unable to fix some of them.

Option 4 – Try reverting back to the previous build of Windows

This kind of error might have something to do with a Feature Update so you can try to revert your computer to a previous build of Windows 10 as it could help you fix the problem. In this case, it would better if you refrain from updating your Windows 10 computer until this problem is completely resolved by Microsoft.