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Malware in Popular CCleaner

On September 18th, 2017, Cisco’s Talos announced that CCleaner, a popular utility with billions of worldwide users, had been compromised by hackers, and was used to unwittingly distribute hidden malware in its installer. Later in the day, Piriform, the publisher of CCleaner, confirmed the problem.

Undetected by all but 1 major antivirus including CCleaner’s own parent company, this occurred for over a month and impacted over 2.7 million users. Users of CCleaner v5.33.6162 and CCleaner Cloud v1.07.3191 for 32-bit Windows are affected. These downloads were live on CCleaner’s official site from August 15th to September 12th, 2017. Anyone who downloaded the program during this time could be affected.

The company claims that while the hackers set up the backdoor and many users were impacted, that the perpetrators have been arrested and that the malware never successfully performed its full task and compromised user’s PCs or sent out their data; in the wake of recent security breaches such as Equifax, users are understandably worried. Given the severity of the threat of hacking and data theft, users should take action immediately if they have CCleaner.

Technical Details of CCleaner Malware Injection

First reported by Talos, the malware, which was hidden in the CCleaner installer without the publisher noticing (despite them being owned by Avast, a massive Anti-virus company), modified a core program DLL file to evade detection, and creates several registry keys. Not only were these files not flagged by any major Anti-Virus, but they were also even digitally signed by Piriform via their Symantec certificate, meaning your PC and security program would likely whitelist and trust the malicious installer. The malware gathers personal information on a user’s PC, including IP address and running programs, and sends it to a remote server. In our testing, the program sent data to IP 216.126.225.148.

Restore Your PC (If Possible)

As of the publication of this article, there have been no assurances given that updating or even uninstalling CCleaner will remove the malware is installed. The only action thus far has been shutting down the remote server where user data was being sent has been shut down by authorities. For this reason, it is best to remove the underlying malware separately, as its presence represents a serious security threat. Unfortunately, as this could have been installed as far back as August 15th, 2017, your System Restore points may not go back that far, or even if they do, restoring to such an outdated point may cause unintended problems with other programs you use and potentially lost files and data. Manually backing up files and doing a full format or clean Windows installation would likely be successful in fully removing the malware, but is extremely time-consuming and can be difficult for many PC users. Unfortunately, this makes a PC Restore or format an unattainable option for many.

Update CCleaner to the Latest Version

While CCleaner has told users to update to the latest version of the program. Prior to doing so, we recommend fully uninstall CCleaner, ensuring you check its program files folders and registry keys, manually deleting any remnants, and then re-downloading the latest version from the official site and reinstalling clean.

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The proxy server is refusing connections
If you receive an error message saying, “The proxy server is refusing connections” while trying to open a website on your Google Chrome or Mozilla Firefox browser in Windows 10, then read on as this post will guide you in fixing this error. This kind of error occurs when you have a wrong or dead proxy configuration or when you are using some VPN service. However, this kind of error could also mean that your computer might be infected by malware which caused some changes in the internal settings. Whatever triggered the error, here are some suggestions that could help in fixing it.

Option 1 – Check the proxy settings in your browser

Like other browsers, Firefox allows users to set up proxy in several ways. However, if you’ve made any changes recently which might have caused the error, the first thing you can do is to check the proxy settings in your Firefox browser. Follow the steps below to do so.
    • Open the browser and go to Menu and then click Options.
    • After that, go to the General tab and scroll down and click the Settings button under Network Settings.
  • From there, make sure that the Use system proxy settings option is set. If not, you have to enable No proxy and then save the changes made.
  • Now check if the “The proxy server is refusing connections” error is fixed or not.
Note: If you want to use a proxy in Firefox, you have to select the Manual proxy configuration and set it up properly. And if your network has a proxy setting and you want to grab that, you have to opt for the Auto-detect proxy settings for this network option.

Option 2 – Try disabling the proxy server for your LAN

If your PC was just attacked by some adware or malware as of late, it is possible that it has changed the network settings in the system and might display spam advertisements. Thus, you have to disable the proxy server for your LAN. To do that, refer to these steps:
  • Tap the Win + R keys to open the Run dialog box.
  • Then type “inetcpl.cpl” in the field and hit Enter to pull up the Internet Properties.
  • After that, go to the Connections tab and select the LAN settings.
  • From there. Uncheck the “Use a Proxy Server” option for your LAN and then make sure that the “Automatically detect settings” option is checked.
  • Now click the OK and the Apply buttons.
  • Restart your PC.
Note: If you are using a third-party proxy service, you have to disable it.

Option 3 – Try disabling the manual proxy setup from Settings

In case you miss it, there is actually an option in the Settings panel that you can use to set up a proxy in your Windows 10 computer. So if you encounter the “The proxy server is refusing connections” error, you should disable manual proxy for the meantime and check if it fixed the error or not.
  • Tap the Win + I keys to open the Windows Settings.
  • Then go to Network & Internet > Proxy.
  • And on your right-hand side, ensure that the Automatically detect settings are enabled and that the Use a proxy server option under the Manual proxy setup is disabled.
  • Now try to open any website again and see if the problem’s fixed.

Option 4 – Check your VPN

If you are using a VPN application, there are times when it causes some issues like this error. If that’s the case, you can try to disable your VPN temporarily and see if the error is resolved or not and if turns out that your VPN is the culprit, you have to uninstall it and install a new one or its latest version. To uninstall it, follow the steps below.
  • Tap the Win + R keys to open the Run dialog box
  • Then type “appwiz.cpl” in the field and hit Enter to open the Programs and Features in Control Panel.
  • From there, look for the VPN service you are using, select it and then click on Uninstall to remove it.
  • After that, restart your computer and try to install the latest version of the program again. It should work now. If not, proceed to the next available option below.

Option 5 – Clear your browser’s internet cache

You actually have the option to Hard Refresh in order to clear the cache of your browser either pressing key combination Ctrl +F5.

Option 6 – Try scanning your computer using Windows Defender

As mentioned, the “The proxy server is refusing connections” might be caused by some malware in the system and so to eliminate the malware, you have to scan your computer using security programs like Windows Defender.
  • Tap the Win + I keys to open Update & Security.
  • Then click on the Windows Security option and open Windows Defender Security Center.
  • Next, click on Virus & threat protection > Run a new advanced scan.
  • Now make sure that Full Scan is selected from the menu and then click the Scan Now button to get started.
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Fix Mic not working in DOTA2
DOTA2 involves teams of five players each, where each player chooses a “hero” character. Each game has two teams pitted against each other, on opposite sides of a map. Once you start, you and your teammates try to level up by fighting and defeating heroes from other teams as well as non-player characters who exist within the game universe. Once you have a strong enough team, you would then try to attack an opposing team’s base. If you destroy their “ancient,” your team wins. The teamwork and interactivity required to play the game are some of its biggest attractions. You can text and voice chat as part of the Dota 2 gameplay, enabling you and your team to come up with strategies to take over your opponents’ base and fortifications. For this reason, a properly working microphone and headset are important if you are to get the most out of this exciting online game. However, there are many times when you find that there are audio dropouts when you try to speak into your microphone. The question “How do I get my mic to work on Dota 2?” is one of the most commonly asked on gaming forums related to this game. Here are solutions for why this can happen:
  1. You are logged in to another computer that is running the STEAM client

    While entirely rare, there are cases where the microphone in Steam is disabled because the same account is active and in use on a different computer. It may not notify you that your account is in use elsewhere. If this is the error, try to log out on other devices and then test it on only one system. If you cannot access the other computer that has access to your account, then change your password. This will automatically disconnect your Steam account from the other computer and let you enjoy voice chat in Dota 2 and other Steam games.
  2. Your microphone is not properly set up in Dota 2

    From the main Dota 2 menu, before you start a match, you can set up your microphone for voice chat. At the top, left-hand corner, click the gear icon to open Settings Select the AUDIO tab and ensure that the Sound Device and Speaker Configuration are set to default. On the same tab, activate Voice (Party) and set your Push to Talk shortcut key for your team. Select the appropriate Open Mic Threshold using the slider at the bottom of this tab to get your microphone recorded at a comfortable level.
  3. The Windows Audio Enhancements setting is turned on

    If you still cannot get your microphone to work properly, then your problem could be Windows Audio Enhancement. It is possible to get your microphone to work with Dota 2 by disabling these features. Right-click your volume icon on the system tray and select Recording Devices. Choose your active microphone then click its Properties button. On the Microphone Enhancements tab, make sure the checkboxes marked Voice enhancements and Acoustic Echo cancellation is unchecked Reboot your PC and retry using your microphone to chat.
  4. Your audio drivers need to be updated

    If you try all of the steps above and still have Dota 2 not recognizing your mic input update mic drivers by going in device manager and choosing update driver.
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Fatal error occurred while trying to sysprep
There are several kinds of errors you could encounter when you are running Windows 10 on a virtual machine. The Windows OS knows the difference between booting up in a standalone computer or in a virtual machine. This is why some specific drivers and system capabilities are used while emulating the Windows OS on software and during this phase, there are times when the System Preparation may throw up an error that says, “A fatal error occurred while trying to sysprep the machine”. This kind of error arises due to a race condition wherein the Sysprep command tries to stop the Microsoft Distributed Transaction Coordinator or MSDTC service and the VMware tool tries to start the MSDTC service. You may also see the following messages logged in the Setuperr.log file:
  • [0x0f0082] SYSPRP LaunchDll:Failure occurred while executing ‘C:Windowssystem32msdtcprx.dll,SysPrepDtcCleanup’, returned error code -2146434815[gle=0x000000b7]
  • [0x0f0070] SYSPRP RunExternalDlls:An error occurred while running registry sysprep DLLs, halting sysprep execution. dwRet = -2146434815[gle=0x000000b7]
  • [0x0f00a8] SYSPRP WinMain:Hit failure while processing sysprep cleanup providers; hr = 0x80100101[gle=0x000000b7]
To fix the 0x0f0082, 0x0f0070, 0x0f00a8 Sysprep errors, you can check out two potential fixes. First, you have to check the status of the MSDTC service and the second one is to check the settings in the Windows Registry. Note that these fixes are proven to be effective on many users and apply to several versions of Windows, including Windows 10.

Option 1 – Check the status of the MSDTC service via Command Prompt

As mentioned, the error could be caused by the malfunctioning of the MSDTC service or it. Thus, you have to uninstall and reinstall the MSDTC service to resolve the problem and you can do that using Command Prompt. Follow the steps below.
  • In the Start Search, type “command prompt” and from the results, right-click on Command Prompt and then select the “Run as administrator” option to open it with admin privileges.
  • If a User Account Control or UAC prompt appears, just click on Yes to proceed.
  • Once you’ve opened Command Prompt, execute this command: msdtc –uninstall
  • The command you just entered will uninstall the MSDTC service. After that, you need to execute this second command to reinstall the service: msdtc –install
  • Now exit Command Prompt and check if the error is now fixed.

Option 2 – Check the Registry settings

  • Tap the Win + R keys to open the Run dialog box and type “Regedit” in the field and click OK or hit Enter to open the Registry Editor.
  • After opening the Registry Editor, navigate to this registry path: HKEY_LOCAL_MACHINESOFTWAREMicrosoftWindows NTCurrentVersionSoftwareProtectionPlatform
  • From there, look for a DWORD value that’s named “SkipRearm” and double click on it.
  • Then change its value data to “1”.
  • Restart your computer to apply successfully apply the changes made and check if it was able to fix the error.
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Enable Windows Sandbox on Windows
One of the most common ways cybercriminals use to inject suspicious code into devices is by tricking users into installing a malicious program on a targeted device. Oblivious users are vulnerable to such tricks, which is why Microsoft has been working hard in the background to address this issue. Recently, Microsoft announced the availability of a sandboxed version of Windows 10 that runs inside Windows 10 in order to isolate suspected software to run inside it and protect the system from potential threats. This Windows Sandbox feature is a new feature that keeps your computer secure. It is a virtual disposable environment that you can enable. So if suspect any software of being malicious, you can run this software in an environment and ensure that it won’t interfere with any normal processes and would not jeopardize files on your computer. To simply put it, “Windows Sandbox is a new lightweight desktop environment tailored for safely running applications in isolation”. So if the Sandbox is closed, all the residual files, software, and other data are deleted permanently. To enable Windows Sandbox, refer to the instructions provided below. Step 1: You have to make sure that you are running either Windows 10 Enterprise Editions or Windows 10 Pro and that your computer is running build 18305 or newer. Step 2: After that, you have to enable Virtualization to let another instance of Windows 10 running in Sandbox mode. Step 3: Next, search for Windows Features on and off in the search box and then select the appropriate entry. Step 4: From the list, go to the mini window and check the Windows Sandbox and then click on OK. Step 5: Afterwards, in the Cortana Search box, search for “Windows Sandbox” and select the related entry to run it in an elevated window. Step 6: Then from your main computer (host), copy the executable file and paste it inside the Windows Sandbox environment. Step 7: Now run the executable file in the Sandbox environment and use it as you normally do. Step 8: Once you’re done, close the Windows Sandbox application and as mentioned, every data regarding the executable file and the temporary environment will be deleted. Step 9: And for the sake of safety, ensure that there are no modifications made to the host because of the executions in the Sandbox environment. You have the option to contact Microsoft for feedback related to Windows Sandbox. You can use the traditional Feedback Hub if you have any suggestions or any issues. Just fill in the appropriate details and select Windows Sandbox for the feature category under the Security and Privacy section. And if you have any issues related to the execution of and within Windows Sandbox, simply choose “Recreate my problem” then select Start capture to reproduce the issue, and once you’re done, select Stop capture.
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How to block websites in Windows
There are a lot of reasons to ban or block different websites in your Windows. From wanting to limit yourself from distraction to block certain sites for sake of kids not going into them. Whatever your reason might be, keep reading in order to find out how you can block any website inside Windows for all browsers. The technique I am going to share with you is universal and not tied to Windows versions, they will work in any Windows from XP onward. Also, the technique will block desired websites on any browser, already installed or even ones that will be installed after doing the trick. And we will also be looking at applications that can help you in this task if you do not wish to do it manually.

Block websites using dedicated software

A small free application called Focal Filter which can be found here: https://www.focalfilter.com/ is a software solution for your needs. It is a pretty straightforward and easy-to-understand application and not really much can be said here about it. You simply download and install it, set your websites, and you are done, the app does rest.

Blocking manually via host file

Another method besides mentioned one using the dedicating application is to manually set site addresses inside the Windows host file. The first thing, of course, is to open the host file, run a notepad with administrator privileges, go to file open, and navigate to c:\windows\system32\drivers\etc\hosts. Once the file is opened go all the way down and add: 127.0.0.1 SITENAME For example: 127.0.0.1 www.youtube.com or 127.0.0.1 www.facebook.com This way each time user on a PC tries to access a listed website computer will reroute it to the given address which is your PC's local address and asked website will not be able to load.
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Can the Adobe.Dll Error Be Fixed?
Adobe.DLL is one of the numerous Dll files you are going to encounter on your Personal Computer. This isn't a system-established service and is usually the consequence of the sort of applications you install on your own Personal Computer. Because adobe.dll is a low-program process, in the event that you find it present on your pc, you can easily end it. It isn't required for the normal working of your OS but might trigger permanent harm if left unchecked. Don't forget that the Computer uses the AdobePDF.dll file for assorted tasks, and you need to make sure it's installed correctly.

Solution

Restoro box imageError Causes

When the adobe.dll is left un-fixed, you may shortly have to deal with sluggishness on your Computer. Simply put, this impedes the standard and amount of work you do while using your PC and impacts your productivity. Sometimes, adobe.dll happens because your computer experiences an overload. As a result, while resolving the malfunction, you've got to look for methods of decreasing the system overload. It's possible that lots of processes are functioning on your PC concurrently. Quit these processes. Lousy setup of the adobe.dll file causes this error too. Check and fix the files and settings that Adobe.Dll requires to run and you may not have to content with these error anymore.

Further Information and Manual Repair

Even though the adobe.dll may severely influence the functioning of your Computer, it is really a trouble or malfunction that one can fix manually.
  • Permanently Un-Installing the Adobe.dll Component is one of the better methods for repairing the malfunction.
Yes, you are able to completely eliminate the adobe.dll issue. The thing you really need to do is un-install it from your own computer fully, and for good.
  • Quit the many processes operating on your Computer and you may get rid of the adobe.dll malfunction.
Adobe.dll regularly happens due to system overload. Thus, the first thing you need to assess is if several processes are operating on the device. If they're, search for methods to stop them, and you'll not have to worry about the adobe.dll error anymore.
  • Utilize Microsoft System Configuration Utility
The MS System-Configuration Utility will settle the system overload problem, thus freeing up space for your programs to run smoothly and possibly avoid malfunctions, including adobe.dll. The Microsoft System-Configuration Utility manually locates and eliminates all running processes.
  • Perform Scans On Your Computer
Running scans on your own Computer may enhance or increase its operation. This technique may also aid in examining your Computer for adobe.dll, or such associated malfunctions, and resolve them forever.
  • Repair Adobe.Dll Files and Settings' Errors.
Considering that the adobe.dll malfunctions can be a result of the existence of malfunctions on your own PC's files and options, fix these properly. Begin by fixing the settings on the files and options utilized by your Computer to perform the adobe.dll, and you may have removed this issue completely. Finally, establish the source of the error message to effectively solve it. Once you do that and fix it, your PC will resume normal operations and even boost your work and productivity.
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Changing the Primary and Secondary monitor
If you are using a dual monitor setup on your computer and you wish to change the Primary and Secondary monitor in Windows 10, then you’ve come to the right place as this post will guide you on how exactly you can do that. A lot of users use more than one monitor to be more productive so having dual monitors helps a lot. So if you have more than one monitor, know that you can actually select any monitor as the primary monitor after installing Windows. Changing the primary and secondary monitor in Windows 10 does not really require you to install any third-party application since you can get the job done by simply making some alterations in the Windows 10 Settings panel. You won’t have any problem in making such alterations since it is quite simple – from modifying the wallpaper to scaling and so on.

To get started, follow the instructions given below carefully.

Step 1: First, tap the Win + I key combination to open the Windows 10 Settings app and go to System and click the Display tab. Step 2: Next, look for the Identify button located on your right-hand side and then click on it. This button will help you check which one is the primary and the secondary monitor. Step 3: After that, select the desired monitor that you want to set as the primary one from the drop-down menu. Step 4: After that, mark the checkbox for the “Make this my main display” option. Step 5: After choosing the primary monitor, this will automatically set the other monitor as the secondary monitor. Restart your computer. So that’s how you change the primary and secondary monitor on your Windows 10 computer. Note that you can always go back to the previous setting of your monitor by following the same instructions provided above.
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Fix Windows Update Error 0x80071a91
Windows Update Error 0x80071a91, what it is? As you know, Windows Updates are very essential to the operating system since they push with them the important security updates that are crucial to the system. And if a Windows Update is delayed, it can the system vulnerable to potential threats. Thus, this kind of issue must be resolved right away. One of the errors that you can encounter while updating your computer is the Windows Update Error 0x80071a91. The error code 0x80071a91 occurs when the “Transaction support within the specified file system resource manager is not started or was shut down due to an error”. This happens when a service called “File System Resource Manager” or FSRM does not function due to some reason. To fix the Windows Update Error 0x80071a91, here are some suggestions that could help.

Option 1 – Run the Windows Update Troubleshooter

Running the built-in Windows Update troubleshooter could also help you resolve the Windows Update Error 0x80071a91. To run it, go to Settings and then select Troubleshoot from the options. From there, click on Windows Update and then click the “Run the troubleshooter” button. After that, follow the next on-screen instructions and you should be good to go.

Option 2 – Disable the antivirus program temporarily

There are times when the antivirus program installed in your computer blocks file access and even disk access. Thus, disabling the antivirus program or any security software installed in your computer is always a good idea you can try when the Windows Update process does not go smoothly. So before you try updating your computer again, make sure to disable the antivirus or security program and once the Windows Update is done, don’t forget to enable the antivirus program back again.

Option 3 – Try resetting the File System Resource Manager

As pointed out earlier, the error 0x80071a91 pops up when the FSRM service suddenly stops working and so resetting this service via Command Prompt might resolve the problem. To do so, follow the steps below.
  • In the Windows Search box, type “command prompt” and hit Enter.
  • Then right-click on Command Prompt from the related search results and click the “Run as administrator” option.
  • After opening Command Prompt as admin, type the following command and hit Enter:
resource setautoreset true C:
  • After that, exit Command Prompt and restart your computer and then check if the problem’s fixed by running Windows Update again.

Option 4 – Flush the contents of the SoftwareDistribution folder

You have to stop a couple of services such as BITS, Cryptographic, MSI Installer, and Windows Update Services. And to do that, you need to flush the contents in the SoftwareDistribution folder. The Software Distribution folder in the Windows operating system is a folder that can be found in the Windows directory and is used to store files temporarily which might be required to install the Windows Update on your PC. Thus, it is required by the Windows Update and maintained by WUAgent. Aside from that, it also contains all the Windows Update History files and once you delete them, you will most likely lose the Update history. As a result, the next time you run the Windows Update, it may result in a longer detection time.
  • Open the WinX Menu.
  • From there, open Command Prompt as admin.
  • Then type in the following command – don’t forget to hit Enter right after typing each one of them.
net stop wuauserv net start cryptSvc net start bits net start msiserver
  • After entering these commands, it will stop the Windows Update Service, Background Intelligent Transfer Service (BITS), Cryptographic, and the MSI Installer
  • Next, go to the C:/Windows/SoftwareDistribution folder and get rid of all the folders and files thereby tapping the Ctrl + A keys to select them all and then click on Delete. Note that if the files are in use, you won’t be able to delete them.
  • Once all the contents in the Software Distribution folder are deleted, restart your PC and then go back to Command Prompt and input the following commands again.
net start wuauserv net start bits

Option 5 – Delete the Common Log File System transaction logs

You might also want to delete the Common Log File System or CLFS transaction logs to fix the Windows Update Error 0x80071a91.
  • Open an elevated Command Prompt.
  • Then type each of the commands listed below and press Enter after you type each one of them.
    • cd /d %SystemRoot%System32SMIStoreMachine
    • attrib -s -h *
    • del *.blf
    • del *.regtrans-ms
  • After you’ve executed the commands given above, restart your computer and try to update Windows 10 again.
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Reliability Monitor is not updating or working
In case you don’t know, there is a built-in tool in Windows 10, known as Reliability Monitor that provides a day-to-day snapshot of the health of your system. It warns users of any looming issues or disasters before your computer breaks down finally. So obviously, Reliability Monitor is useful, however, there are times when it could behave incorrectly. For instance, it might fail to show you any updates even when they are installed. Thus, if you experience any malfunctions with the Reliability Monitor tool in Windows 10, read on as this post will guide you in updating or working in Windows 10. To fix the problem with the Reliability Monitor, there are several fixes you can check out. You can try to enable the data collection for Reliability Monitor or reset it, as well as put your computer in a Clean Boot State. For more information, refer to each one of the options given below.

Option 1 – Try to enable the Data Collection for Reliability Monitor

The Reliability Monitor tool uses data provided by the RAC Agent scheduled task and it will start to display a Stability Index rating and specific event information 24 hours after the system installation. The RACAgent scheduled task, by default, runs after the operating system is installed. And if it is disabled, it must be manually enabled from the Task Scheduler snap-in for MMC or Microsoft Management Console. Thus, you need to enable the Data Collection for Reliability Monitor to fix the problem.

Option 2 – Try to reset the Reliability Monitor

The next thing you can do to fix the issue with the Reliability Monitor might want to reset it to resolve the problem. If the Reliability Monitor is already open, you have to close it and open it again. After the reset is done, it may take up to 24 hours for the Reliability Monitor to display results again. This should fix the problem.

Option 3 – Troubleshot the problem in a Clean Boot State

There are some instances that some conflicting programs installed in your computer might be the one that’s causing the Black border issue. To identify which program is causing the problem, you need to put your computer in a Clean Boot State. To do so, follow the steps below.
  • Log onto your PC as an administrator.
  • Type in MSConfig in the Start Search to open the System Configuration utility.
  • From there, go to the General tab and click “Selective startup”.
  • Clear the “Load Startup items” check box and make sure that the “Load System Services” and “Use Original boot configuration” options are checked.
  • Next, click the Services tab and select the “Hide All Microsoft Services” check box.
  • Click Disable all.
  • Click on Apply/OK and restart your PC. (This will put your PC into a Clean Boot State. And configure Windows to use the usual startup, just simply undo the changes.)
  • From there, start to isolate the problem by checking which one of the programs you installed recently is the root cause of the problem.
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How to Fix ISDone.dll Error in Windows
As you know, games with good graphics and fast play are definitely resource-intensive and can consume a lot of storage space on your computer. Because of that, they have to be compressed before it gets downloaded to your computer and then unpacked to the hard drive before it gets installed. However, if an error occurs in your computer’s RAM during the installation process or if your hard disk does not have enough memory to handle the process, then you might encounter the isDone.dll error which states:
“An error occurred when unpacking, Unarc.dll returned error code -1, ERROR: archive data corrupted (decompression fails).”
If you encounter the isDone.dll error message on your Windows 10 computer, then read on as this post will show you how you can fix it. This error has something to do with the incomplete installation of PC games or files of larger size. The ISDone.dll error appears due to faulty Unarc.dll file residing in the System32 folder on 32-bit operating systems and the SysWOW64 folder on 64-bit systems. So, if you see this error message, then, it means your computer was not able to read installation archive files.

What is Unarc.dll file?

Unarc.dll is a dynamic link library for Windows. Some applications or games require this file to function properly. So, if it goes missing or, an error occurs when you start a game or an application, you may get various kinds of errors. ISDone.dll error while playing games on PC

Option 1 – Try to reinstall the game

The isDone.dll error could also be caused by the installation of an unknown application. Or it could also be caused by an outdated or corrupted application. In other words, if the game you are trying to install is broken or corrupted, then it’s no wonder why you’re getting the isDone.dll error. To fix this, make sure that you download the latest updated version of the game and then try to install it again and see if the problem is resolved or not.

Option 2 – Try to re-register the .dll file using the Regsvr32 tool

  • The first thing you have to do is to locate the DLL file named dll on your computer and rename it to Unarc-bak.dll.
  • Next, copy the Unarc.dll file from another well-functioning computer and save it on your desktop.
  • After that, move the DLL file you just copied to the System32 folder if you are using a 32-bit operating system, or the SysWOW64 folder if you are using a 64-bit operating system.
  • Now you have to register the new DLL file and you can do that using Windows PowerShell.
  • Open Windows PowerShell and then execute this command if you have placed the DLL file in the System32 folder: regsvr32 %systemroot%System32unarc.dll
  • On the other hand, if you have placed the DLL file in the SysWOW64 folder, then execute this command: regsvr32 %systemroot%SysWOW64unarc.dll
  • Once you’re done, a message will be displayed saying that the DLL file was registered.
  • Restart your computer and check if the problem is now fixed.

Option 3 – Troubleshoot the isDone.dll error in a Clean Boot State

You can also troubleshoot the isDone.dll error in a Clean Boot state. It could be that there are some third-party applications in your computer that're preventing the application from getting installed and to isolate this possibility, you need to boot your computer in a Clean Boot State and then try installing the program again. Putting your computer in this state can help you identify which program is the culprit and thus isolates the problem. In a Clean Boot state, your computer will start using only the pre-selected minimal set of drivers and startup programs. Note that you have to disable and enable one process at a time.
  • Log onto your PC as an administrator.
  • Type in MSConfig in the Start Search to open the System Configuration utility.
  • From there, go to the General tab and click “Selective startup”.
  • Clear the “Load Startup items” check box and make sure that the “Load System Services” and “Use Original boot configuration” options are checked.
  • Next, click the Services tab and select the “Hide All Microsoft Services” check box.
  • Click Disable all.
  • Click on Apply/OK and restart your PC. (This will put your PC into a Clean Boot State. And configure Windows to use the usual startup, just simply undo the changes.)
  • After you’ve set your computer into a Clean Boot State, make sure that you’re signed in as administrator and then try to install the application again.

Option 4 – Try updating or reinstalling your Graphics drivers

Updating or reinstalling the Graphics drivers in your computer can also help in resolving compatibility issues between the operating system and the driver that might have caused the isDone.dll error.
  • First, boot your computer into Safe Mode.
  • After that, tap the Win + R keys to launch Run.
  • Type in devmgmt.msc into the box and tap Enter or click OK to open the Device Manager.
  • After that, a list of device drivers will be displayed. From there, look for the Display Adapters and click on them.
  • After that, right-click on each entry under the Display Adapters and select the “Uninstall Device” option from the menu.
  • Now restart your computer.
  • After restarting your computer, go to the Settings app and Check for Updates in the Windows Update section.
Note: You also have the option to go directly to the website of your graphics card manufacturers like NVIDIA, Intel, or AMD and go to the section called Drivers then check if there’s a new available update – if there is, download and install it.

Option 5 – Try scanning your computer using Windows Defender

The isDone.dll error might also be infected with malware or virus and to eliminate it, you have to scan your computer using security programs like Windows Defender.
  • Tap the Win + I keys to open Update & Security.
  • Then click on the Windows Security option and open Windows Defender Security Center.
  • Next, click on Virus & threat protection > Run a new advanced scan.
  • Now make sure that Full Scan is selected from the menu and then click the Scan Now button to get started.
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