How to fix disk signature collision problem

Microsoft allows its users to download a copy of Windows to install on PCs. However, when you enter the key after the installation and you got the Activation Error 0xC004F212 instead, then it means that the license key and the Windows version you’ve just installed, do not match. When you encounter this error, you will see the following error message on your screen:

“The product key used on this PC didn’t work with this edition of Windows. Activation Error 0xC004F212.”

Every time Microsoft generates a license for a copy of Windows, it is associated with one particular Windows variant. Windows comes in many editions like Enterprise, Home, Professional, and so on. For instance, if you bought a license for Windows 10 Enterprise but you have installed Windows 10 Professional instead, then the activation will surely fail and you’ll encounter the Activation Error 0xC004F212. You will be asked to select which edition you want to install when you reinstall Windows 10 using a digital license. If you opted for an edition other than the one you are licensed to use, then you will most likely get the Activation Error 0xC004F212. If you have purchased your license key from a store or some website, you might want to check back with them about the exact version of Windows. Doing so will help you narrow down the problem. And if you have second thoughts about the license key’s validity, you can just reach out to a Microsoft Support agent to check the validity of the license key. Also, if have bought it from the store, there should be an option to get a refund. That way you can choose to buy the right version of Windows.

Option 1 – Try running the Windows 10 Activation Troubleshooter

The first thing you can do to resolve the Activation Error 0xC004F212 is to run the Windows 10 Activation Troubleshooter. To do so, follow these steps:

• Go to Settings and then select Activation.
• After that, click on the Windows Activation and then troubleshoot. This will help you address most of the commonly found activation issues in Windows devices.

The Windows 10 Activation Troubleshooter will determine if your license key is a valid Windows 10 digital license for an edition that is not currently installed. If it turns out that it’s not, then the troubleshooter will show you how to install the correct edition.

Option 2 – Try forcing Windows 10 ISO to use the right version

You can also try to force Windows 10 ISO to use the correct version depending on the product key. Note that this option only works between Windows 10 Home and Professional version since they both have a common ISO. So if it’s Enterprise, then this option won’t work for you.

• Extract the Windows 10 ISO files using an extractor.
• Then browse to the folder you created and go to the sources folder.
• From there, you need to create a text file named “PID.txt” and make sure to follow the exact format given below:

[PID] Value=xxxxx-xxxxx-xxxxx-xxxxx-xxxxx

Note: “xxxxx” is the KEY to your Windows version.

• Next, you need to create the ISO again or bootable media that will repack everything and then create the Media file. You can use the Media Creation tool for this.

Note: Windows will check the key during the installation and will figure out the right version of Windows.

Option 3 – Contact Microsoft Support for assistance

If you’re at your wits’ end in trying to update your Windows 10 computer, you should consider contacting Microsoft Support for help as they can offer you various options that would make fixing Windows Activation Error 0xC004F212 a lot easier and faster.

Error Code 0xC1900101, 0x30018? - What is it?

Users, when upgrading to Windows 10 from Windows 7 or Windows 8/8.1, or when upgrading to a new version, build, service pack, or major update of Windows 10, can encounter error code 0xC1900101, 0x30018. Windows 10 installation fails and stops or hangs. During the installation process, it will reach a certain maximum limit (normally at 6% or 32%) then reverts back to the previous version of the operating system and displays the following message:

We couldn’t install Windows 10. We’ve set your PC back to the way it was right before you started installing Windows 10.

0xC1900101 – 0x30018 The installation failed in the FIRST_BOOT phase with the error during the SYSPREP operation.

Solution

Error Causes

In attempting to fix Error Code 0xC1900101-0x30018, it is vital to know what causes this issue. The most probable causes of this error are:

• Incompatible hardware or driver
• Incompatible security programs or antivirus or incompatible utility software
• A device driver possibly stopped responding to setup.exe while on the installation process.

In some cases, you might be opened to other error messages when attempting to update to Windows 10, including error code 8007002c.

Further Information and Manual Repair

In fixing issues related to error codes, it is best to employ manual repair methods. Using these methods helps users pinpoint the root causes of the issue and apply solutions permanently to fix the issues. While most manual repair methods can be done by every Windows user, even those without technical abilities, there are certain cases where help from a Windows professional is needed. If you’re not up to facing risks in implementing manual methods yourself, consider getting help from a professional Windows technician or you can use a powerful automated tool. In fixing Error Code 0xC1900101-0x30018, you can repeat the same steps used for 0xc000021a (Method One) or you can try doing the following:

• Disable or uninstall your Antivirus program before proceeding to upgrade the system
• Ensure that the machine name is simple (having at least 8 characters) with no special characters like hyphens or dashes.
• Restart the device a few times then try again.
• Disable General USB Devices such as the Smart Card Reader.
• If you use an SCSI hard disk, ensure that you have available drivers you can use for your storage such as a thumb drive and make sure that it is connected. During the Windows 10 setup, select the Custom Advanced Option and use the Load Driver command to be able to load the suitable driver for the SCSI drive. If this fails, try switching to an IDE-based hard disk.
• You can now perform a clean boot. Restart your device then try again.
• If you are using the .ISO file for upgrading the system, you need to disconnect from the Internet first before proceeding to the setup. If you are connected to Wi-Fi or by Ethernet (LAN), make sure to disable both connections then you can proceed to set up again.
• If you’re performing the update through Windows Update, once the download reaches 100%, disconnect from the Internet, and then proceed with the installation.

NOTE: If this fails, if possible, you can try using the .ISO file in upgrading.

• Switch to a local account if the device is connected to a domain.
• Disconnect all external devices attached to the computer such as gaming controllers, printers, or USB keys.

If you’re using Windows Update in installing Windows 10, you can implement the following:

1. Open the Command Prompt window by pressing Windows Key + X. Select Command Prompt (Admin) from the menu.
2. Stop the BITS, Cryptographic, MSI Installer, and the Windows Update Services. In order to do this, Type or Copy and Paste the following commands one at a time:

NOTE: Don’t forget to hit Enter after every command.

net stop wuauserv

net stop cryptSvc

net stop bits

net stop msiserver

3. Rename the Catroot2 and SoftwareDistribution In order to do this, Type or Copy and Paste the following commands one at a time:

NOTE: Don’t forget to hit Enter after every command.

                        ren

C:WindowsSoftwareDistribution SoftwareDistribution.old

                          ren

C:WindowsSystem32catroot2 Catroot2.old

4. Restart the BITS, Cryptographic, MSI Installer, and the Windows Update Services. In order to do this, Type or Copy and Paste the following commands one at a time:

NOTE: Don’t forget to hit Enter after every command.

net start wuauserv

net start cryptSvc

net start bits

net start msiserver

5. Type Exit in the Command Prompt then close the Command Prompt window then restart the computer.

Can’t seem to put up with the long and technical manual repair process? You can still fix this error by downloading and installing a powerful automated tool that will surely get the job done in a jiffy!

Each time you execute a command on your computer, it takes into account a number of files and space for the code in the background for the command to be executed. Thus, executing the command is not that easy which is why you could encounter some errors along the way due to various limitations or poor allocation of memory, and so on. One of the errors you might encounter when executing a command on Windows 10 and Windows Server is the “Not enough storage is available to process this command”. There are several potential fixes you can check out to fix this error. To fix this error, you can try to delete the temporary files in your computer, run the DISM tool or apply some registry tweaks. For more details, refer to each one of the given options below.

Option 1 – Try to delete the temporary files

The error could be caused by some temporary or junk files in your computer and so you need to clear them up to fix the problem. You can achieve that using the Storage Sense feature.

• Open Setting > System > Storage from the WinX Menu.
• From there, you will see a list of all the local and connected storage devices along with the details on the free space. Make sure that Storage Sense is on.
• Next, find a link that says “Free Up Space” and click it to open.
• After that, a screen which is the built-in program in Windows 10 will appear and will scan your computer for the following junk files so you can free up disk space:
  • Windows Upgrade Log Files
  • System created Windows Error Reporting Files
  • Thumbnails
  • Temporary Internet Files
  • Previous Windows Installation Files
  • Delivery Optimisation Files
  • DirectX Shader Cache
• Choose the files you want to get rid of and then click on the remove files option. Note that you’ll have an idea of the total size as you select any of the junk files listed above.
• Now go to the “Free Up Space Now” section and click the Clean now button. This will get rid of all the temporary or junk files in your computer and should hopefully fix Error 1310.

Option 2 – Run the DISM tool

You can also run the DISM Tool as it could also help in fixing the “Not enough storage is available to process this command” error in Windows 10. Using this built-in tool, you have various options such as the “/ScanHealth”, “/CheckHealth”, and “/RestoreHealth” that could help in fixing error 0x80246019.

• You can run the DISM tool via Advanced Startup Options or you could boot your computer into a Clean Boot State and then select Command Prompt.
• Open the Command Prompt with admin privileges.
• Then type in the following commands and make sure to hit Enter right after you type each one of them:
  • Dism /Online /Cleanup-Image /CheckHealth
  • Dism /Online /Cleanup-Image /ScanHealth
  • exe /Online /Cleanup-image /Restorehealth
• Do not close the window if the process takes a while as it will probably take a few minutes to finish. Once it’s done, restart your computer and try again. If it didn’t work, you can try to use the “/StartComponentCleanup” parameter: Dism /Online /Cleanup-Image /StartComponentCleanup

Option 3 – Try to use the Registry Editor

The memory range allocated for the tasks and commands to be executed is associated with the IRPStackSize DWORD. Thus, to fix the error, you need to extend the range by applying some registry tweak. Before you proceed, make sure that you create a System Restore point first. Once you’re done, follow these steps:

• Tap the Win + R keys to open the Run dialog box and type “Regedit” in the field and tap Enter to open the Registry Editor.
• Next, navigate to this registry key: ComputerHKEY_LOCAL_MACHINESYSTEMCurrentControlSetServicesLanmanServerParameters
• From there, look for the DWORD named “IRPStackSize” and right-click on it. If you can’t find this DWORD, just right-click on any empty space and select New > DWORD (32-bit) Value.
• Input “IRPStackSize” as the DWORD name and double click on it and set its Value data to be greater than its default value. Note that the maximum value allowed is “0xc” and the range starts from “0x1”.
• Now click on OK and exit the Registry Editor and then restart your computer and see if the error is fixed.

If your Windows 10 computer slows down, the first thing you can do is to check the status of the resource usage in the Task Manager. In such cases, it shoots up to even 1000% which causes the system to either hang or freeze since some programs are using a major chunk of system resources. And this is the case with msrtn32.exe. Msrtn32.exe is a malicious file that may try to steal your digital currency. It can get installed on your computer when you install a browser plugin or extension that can modify the default settings of browsers, the content of web pages, search results, as well as display tons of intrusive ads. So if you see msrtn32.exe under the Processes tab of the Task Manager If you see msrtn32.exe under the Processes tab of your Task Manager, refer to the suggestions given below to get rid of it and restore your computer’s normal function. Before you proceed, take note that this executable file is found in the following location:

C:/Program Files(x86)msrtn32

Option 1 – Delete the folder where msrtn32.exe is located

The first thing you can do is to go to C:/Program Files(x86)/msrtn32. From there, look for the malicious executable file and delete its folder. If you are not able to delete the folder, make sure that you’re logged in as administrator and then try again.

Option 2 – Try scanning your computer using Windows Defender

Since you are dealing with a malicious file, if you weren’t able to delete the folder where the file is located, you can scan your computer using the built-in Windows Defender program and then eliminate the malicious file. Follow the steps below to do so:

• 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.

We have often talked about the security of your computer, we have been giving you tips and tried to explain how to best protect your computer from various attacks and malicious software. Today we will be talking about antivirus applications. Antivirus software has become the kind of a must-have in every computer in this day and age. When you think about it, our systems are connected to the internet most of the time if not always, and therefore kind placed in from the line of various cyber-attacks. Here antivirus software comes into focus, especially because it has evolved long from just a simple virus removal tool to full security suites. We will be going through the best of these applications in order to present both their good and bad sides and hope that we will help you in picking the right one for you. Remember, picking either one of the presented solutions is way better than not having one at all. The list is made from best down in our opinion so number one is highly recommended.

List of Best antivirus applications of 2021

1. BitDefender

   In our opinion the best overall security protection suite for this age and time. Bitdefender has cemented itself as number one a few years back and it holds that status even today. It has top-of-the-game virus protection, an incredible amount of features, safepay banking online protection and it is amazingly cheap. Its downside we could say is that it can be annoying sometimes, especially if you set it to maximum protection and paranoid mode. In this case, it will often ask what to do and how to behave leading to minor annoyances.

2. Norton antivirus

   Norton antivirus is well known to older computer users, this package has been around a long time and it is our pick for closest one to challenge top place because of its packed features. The number of features it has are really stunning and it comes also with great and maybe best-browsing protection of all candidates. It also has a backup tool bundled with it but the reason why it is in the second place is that it is taxing to the system and can have a real impact on computer performance. Great protection is important, but so it is working on it without slowdowns.

3. Kaspersky

   Another one of the old antivirus software on the list. Kaspersky Lab was once top tier antivirus software but it dropped down due to its high prices, later they have changed their pricing to be more in trend with other rival companies but many have switched to something else. Today it still packs one of the best antivirus engines with fast and configurable scans. It also has very impressive anti-ransomware features but sadly most of the things it just simply does for you leaving you to fully trust it since you cannot really configure much. It is not in step with new technologies and it is lacking some features like support for the Chrome browser that places it lower in our ranking.

4. Trend Micro antivirus

   The biggest sell point for this antivirus application is probably its ease of use and user-friendliness. It also packs a great antivirus engine and impressive anti-ransomware performance but sadly it comes with very limited configurability and somewhat lack of features comparing it with the top three entries. Never the less a very user-friendly application that you can configure without knowing any kind of tech talk, everything is laid out in simple English.

5. Avira

   Perhaps best known for its free version, Avira has a premium one that is well better worth than the free version. Strong suites of this software are mostly aimed at the internet with its great anti-phishing and web protection along with a low price for all of its features. Sadly in the domain of virus protection, there are some reports from independent websites that its antivirus engine is not so great, it will offer you moderate protection but not the best.

6. Webroot Secure Anywhere

   If you are on the lookout for software that has a great virus database and plenty of features but is also incredibly light weighted and fast then look no further, Webroot Secure Anywhere is an application for you, incredibly fast and incredibly small is a great solution for older machines. It keeps all of its databases up in the cloud and this feature among its great advantages is also its greatest disadvantage since if you are out of the internet you will not be able to have the latest virus definitions available to you making this tool very situational.

7. Avast

   Avast has many great protection features and it is very highly configurable. The firewall comes also in its premium edition and it offers great virus protection including a file shredder and awesome WI-FI inspector for an extra layer of security. This package would be higher on the list if it was not for its lack of WEB protection and its tool on the system resources.

8. Sophos home antivirus

   Lack of features and somewhat strange user interface are downsides of this software but on its positive side it has good antivirus engine and its user interface is very friendly. Where it shines though is in its price, for one affordable price you get protection for 10 devices making this option a great choice for anyone wanting to protect more devices or just use a single license for the whole family.

9. ESET antivirus

   Greatly configurable antivirus software with tons of options and very light on system resources makes ESET one of the best out there. Virus engine and database is also top tier but some testing labs have reported that protection offering is not really what it is advertised and if we talk about its strong suite of a great many options and configurations it is at the same moment its downside since it is not very friendly to novice and beginner users.

10. McAfee antivirus

    McAfee antivirus comes in its package with unlimited VPN service and if we take look at the top tier pricing plan it is a great investment. Sadly for its entry-level price, it covers only a single device and it was reported that it packs little outdated virus engine if we compare it with its rivals. Nevertheless, it still offers good virus protection and if you take into account the VPN that comes with it, it can find its users.

Conclusion

No matter which antivirus you choose you will not go wrong, after all any protection is way better than none.

Google Chrome, Microsoft Edge, Mozilla Firefox are some of the leading browsers commonly used these days and they all include an embedded copy of the Adobe Flash Player. So if you are running a Windows 10 PC then you can have up to 4 copies of Adobe Flash Player; one for Microsoft Edge, one for Internet Explorer, one for Opera, one for Firefox. You might also experience cases wherein two flash players are simultaneously running, i.e. one installed in Chrome as a single plug-in and another one installed in Windows, trying to parse the data. And in such cases, you might consider removing or uninstalling one of the versions of Adobe Flash Player. If you do, then you’ve come to the right place as this post will guide you in disabling the embedded Adobe Flash Player in Windows 10. Before you get started in removing the Adobe Flash Player in Internet Explorer & Microsoft Edge browser, you need to sign in with your administrative account even if don’t use it or set it as the default browser. After you’ve signed in to your administrative account, follow the steps below. Step 1: Open your browser, if you are using Edge then open it. Step 2: After opening your browser, go to its Settings and select Advanced Settings. Step 3: Next, Move the slider against the “Use Adobe Flash Player” option to off. Step 4: After that, open File Explorer and navigate to this address, “C:/Windows/servicingPackages” and from there, check on the following entries:

• Adobe-Flash-For-Windows-Package~31bf3856ad364e35~amd64….(version number of the Flash Player)
• Adobe-Flash-For-Windows-WOW64-Package~31bf3856ad364e35~amd64….(version number of the Flash player #)
• Adobe-Flash-For-Windows-onecoreuap-Package~31bf3856ad364e35~amd64…(version number of the Flash Player)

Step 5: Take note of all the listed package names of Adobe Flash Player and tap the Win + R keys to open the Run dialog box and type “Regedit” in the field and hit Enter to open the Registry Editor. Step 6: Next, right-click on the three keys which have the name of the packages you listed and select “Permissions” one after the other. Step 7: Then check “Allow” to enable full control for the Administrators account and click OK to save the changes made. Step 8: Select the three keys one after the other and select Visibility DWORD located on the right side and then right-click on Visibility and change the Value data from 2 to 1. Step 9: Go over the same procedures again for the other keys. Once you’ve completed then you should now be able to remove packages using the DISM tool. Step 10: Simply open an elevated Command Prompt and execute the following commands:

• dism /online /remove-package /packagename:Adobe-Flash-For-Windows-Package~31bf3856ad364e35~amd64-10.0.17134.1
• dism /online /remove-package /packagename:Adobe-Flash-For-Windows-WOW64-Package~31bf3856ad364e35~amd64-10.0.17134.1
• dism /online /remove-package /packagename:Adobe-Flash-For-Windows-onecoreuap-Package~31bf3856ad364e35~amd64-10.0.17134.1

Keep in mind that the numbers at the end could be different on your computer due to the difference of version number so you have to use the numbers on your system. After that, reboot your computer.

When trying to run Computer Management, or when running mmc.exe or compmgmt.msc from a command prompt you get the error that the application has been blocked for your protection then keep reading in order to solve the issue. This is a permission issue where if a regular user tries to run such system tools will result in saying that it has been blocked. Along with this, you may have a Group Policy issue. This can be fixed, but you will need admin permission to achieve it. It’s because when they are run from the command prompt with elevated privileges, it works.

1. Change Group Policy Settings

   If your account is an admin account, and you are still facing the issue, then change the group policy settings: Open Group Policy Settings by typing gpedit.msc in the run prompt followed by pressing ENTER Navigate to User Configuration > Administrative Templates > Windows Components > Microsoft Management Console > Restricted/Permitted snap-ins Locate Computer Management policy, and double click to open it Enable it, exit Group Policy. When Enabled: The snap-in is permitted and can be added into the Microsoft Management Console or run from the command line as a standalone console. When Disabled: The snap-in is prohibited and cannot be added into the Microsoft Management Console or run from the command line as a standalone console. An error message is displayed stating that the policy is prohibiting the use of this snap-in.

2. Temporarily disable UAC

   UAC is the user access control panel, and if you need to run the command right away, you can choose to disable it for some time. Click on the Start button, and then type UAC to find the User Account Control Settings. Click to open, and then slide down the notification setting at the bottom. It will temporarily allow launching the application as there is no check. However, make sure to switch to default once you are done.

One of the useful features that came with Windows 10 is the Mobile Hotspot although there’s a downside to it – it drains your battery faster especially if your Windows 10 device is running on battery. Another one of its flaws in the implementation of this feature is that it stays activated even when the connection is idle. In other words, it is still activated even if no devices are connected to it. As a result, it consumes battery life and affects it. There are also instances when it affects the performance of the network connection. At the time of writing, Microsoft hasn’t done anything about this dilemma yet so in the meantime, you can continue reading this post to resolve this issue on your Windows 10 device. You can remedy this Mobile Hotspot issue by running a command in Windows PowerShell. To get started, follow the given instructions below.

Turn off Mobile Hotspot Automatically:

Step 1: The first thing you have to do is to copy the following command:

powershell -windowstyle hidden -command "Start-Process cmd -ArgumentList '/s,/c,net stop "icssvc" & REG ADD "HKLMSYSTEMCurrentControlSetServicesicssvcSettings" /V PeerlessTimeoutEnabled /T REG_DWORD /D 1 /F & net start "icssvc"' -Verb runAs"

Step 2: After copying the command given above, open the Notepad app and paste the command you copied there and save it. And when saving it, select the “Save as” option and its File type as “All files”. Step 3: After that, put “TurnOnTimer.bat” as the file’s name and save it on your Desktop. Step 4: Once done, run the file you just created, and when a User Account Control or UAC prompt appears, just click on Yes. Step 5: After you run the file, it will run a series of scripts in a command line which will turn off the Mobile Hotspot automatically when idle. And that’s how you automatically turn off the Mobile Hotspot when your Windows 10 device is idle. On the other hand, if you want to undo the changes made, you can always do so using the steps provided below.

Turn on Mobile Hotspot:

Step 1: Copy and paste the following command in the Notepad app:

powershell -windowstyle hidden -command "Start-Process cmd -ArgumentList '/s,/c,net stop "icssvc" & REG ADD "HKLMSYSTEMCurrentControlSetServicesicssvcSettings" /V PeerlessTimeoutEnabled /T REG_DWORD /D 0 /F & net start "icssvc"' -Verb runAs"

Step 2: After copying and pasting the command, save it as “TurnOffTimer.bat” on the Desktop. Step 3: Once done, run the file like what you did earlier and select Yes when a UAC prompt pops up. This will run a series of scripts on a command line which will revert the changes back to their default state.

Did you know you can use emoji in file names inside Windows 10? It is no secret that emojis are basically everywhere and Microsoft has seen this and integrated them into Windows itself, so you can name files using emojis or combine them with text. Placing emojis in file names or in the text is extremely easy, all you have to do is press ⊞ WINDOWS + . and the emoji dialog will open from where you can find which emoji you would like to use. And that's it, you just used emoji for the file naming.

!!!NOTE!!!

In theory, some applications may not like these emojis if they don’t support Unicode characters. However, modern applications are designed to work with a broad set of languages that should properly support emojis. For example, the classic Windows Command Prompt can’t see emoji characters in file names properly, but both PowerShell and Microsoft’s new Windows Terminal can display them properly. If you do run into a problem, you can always open File Explorer and rename the affected files and folders to remove the emoji characters. You can then use those files in applications that don’t properly support emoji file names.

What is Error Code 100?

Error Code 100?? Whenever a Setup error contains error codes in the message, this indicates what the setup was operating on, let’s say copying files. The text in the error message will determine whether that it is fatal or not. An error code 100 is a system error that is displayed as ‘ERROR_TOO_MANY_SEMAPHORES’ or as a value 0x64. This error means that the system ‘cannot create another system semaphore.’ A semaphore is used in controlling access to parallel programming or a multi-user platform through multiple processes. This error can prevent certain features of your Windows to perform properly, like trying to get a print, copying files, deleting files, or any other routine computer activities.

Solution

Error Causes

Error code 100 can affect a wide range of activities that you normally perform on your PC. This error can occur for a number of reasons, of which some of the common ones include:

• When the Microsoft SQL Server fails to start the service
• When the account used for starting AOS does not match the database in SQL Server
• When the AOS licenses have exceeded their limit
• When the SQL Server database is incorrectly case sensitive

Though these are the common causes for error code 100, there can be other ways through which this error can occur. To find out the specific cause for error code 100, follow these steps:

• Go to Start and select All Programs. Go to Administrative Tools and click Even Viewer
• Click Application in Even Viewer
• Locate the error message in the right pane by scrolling down
• Click on the error message and see if the message applies to the error code.

Further Information and Manual Repair

In order to manually repair this error, you will have to work with your Network Administrator as they will have security privileges to take the steps. However, there are more than one ways to resolve this issue, for instance:

1. Starting SQL Server Service
   • A likely cause of an error code 100 can be that your SQL Server service is not started. To activate it, follow these steps:
   • Got to Start and Click on All Programs, go to Administrative Tools and click on Services
   • Find SQL/MSSQLServer service
   • Right Click on it and click Start to activate the service
2. Network Resolve

If you are connected to a network, then you can work with your network administrator to fix error code 100. Follow these steps to resolve this error:

• Got to Start and then Run. Type dcomcnfg and press Enter
• Locate Default Security and click it
• Find Default Access Permissions and click Edit Default
• You should locate System and Interactive, listed in the Allow Access. If they’re not listing, you can add them by clicking Add
• Find the local computer in the list and click on Allow Access
• Click Ok on the following three steps
• Log off the computer and log in again.