In order to disable multiple instances of an app on Windows 10, you need to install a free app called SingleInstance. Go ahead and download, and run the app. The app, by default, has one app pre-configured and that’s the Calculator app on Windows 10.To prevent multiple instances of the application from running, simply call FindWindow with a pointer to the string “MyWindowClass” in parameter 1 at the outset of WinMain and return immediately if FindWindow returns a non-NULL window handle. The WinMain function in Figure 1 illustrates how it’s done.
Why are there multiple instances of apps running?
Sometimes processes are split in order to save resources. For example for Google Chrome, multiple processes are launched, where each one is for browser, each extension, each tab. if you click “>” that should explain a bit more.
How do I make sure that only one instance of my application runs at a time?
The best way of accomplishing this is using a named mutex. Create the mutex using code such as: bool firstInstance; Mutex mutex = new Mutex(false, “Local\\” + someUniqueName, out firstInstance); // If firstInstance is now true, we’re the first instance of the application; // otherwise another instance is running.
How do I run a single instance of the application using Windows Forms?
” This feature is already built in to Windows Forms. Just go to the project properties and click the “Single Instance Application” checkbox. “
What is single instance application?
A Single Instance application is an application that limits the program to run only one instance at a time. This means that you cannot open the same program twice.
How do I close all instances?
Press Alt + E to close all the programs. Finish off by closing the Windows Task Manager by clicking the X in the top right-hand corner (or you can do Alt + F /down arrow and select the Exit Task Manager option).
Why do I have multiple of the same processes running?
This is pretty normal as processes takes time to end on task manager after you exit on the program. As for the multiple processes on each application, it is actually normal. Programs run 1 process per tab, extensions and GPU processes.
Why do programs show up multiple times in Task Manager?
“The fact is that some programs are just designed to have multiple copies running.” The fact is that some programs are just designed to have multiple copies running. SVCHOST is a great example, as it’s a utility “host” program for a variety of different services that run within windows.
How do I block a program on my computer?
How to use Desktop App Blocking. To select which apps you’d like to block, select “Manage Blocked Desktop Apps” from the Freedom menu. Next, a window will open up which allows you to select the apps you want to block. Click on the apps you’d like to block, and then press “Save”.
How do I block an application?
To choose the apps you wish to block, tap the Blocklists icon on the bottom of the screen and then tap “Manage” next to Blocked Applications. After tapping “Manage”, you’ll see a list of your device’s apps divided by category. On this screen, you can select the apps you wish to block during Freedom sessions.
How do I restrict a class to create one instance in C#?
One option is to just declare a static class with only static members. Or you can implement the Singleton pattern by giving the class a private constructor: public class MySingleton { public static readonly MySingleton Instance = new MySingleton(); private MySingleton() { } // Members … }
What are app instances?
An application instance is a collection of services and service groups that is associated with a top-level consumer. Start by creating an application instance from an application template. Then, deploy the application instance and any packages associated with it.
Why do I have two of the same apps?
Clearing the cache files: This is a very common reason cited by many users. They can even disrupt the icon files leading to showing duplicate ones. To fix it, Go to Settings, click on manage Apps and search the app that is causing the most trouble.
How can I have two instances of the same app on Android?
Here is how you can run multiple instances of an app using Parallel Space: Open Parallel Space and tap on the apps you want to clone. Select Add to Parallel Space. Once the apps are in the Parallel Space, tap on the one you want to run.
What is multi instance?
Multi-instance queue managers are instances of the same queue manager configured on different servers. One instance of the queue manager is defined as the active instance and another instance is defined as the standby instance.
What is an ERP instance?
An ERP instance is simply an installation of an ERP application. Therefore, a single-instance ERP solution is one that uses the ERP system for all your business operations—on either the front end or the back end.
How do I close all instances of a program in Windows?
Press Ctrl-Alt-Delete and then Alt-T to open Task Manager’s Applications tab. Press the down arrow, and then Shift-down arrow to select all the programs listed in the window. When they’re all selected, press Alt-E, then Alt-F, and finally x to close Task Manager.
How do I stop unwanted programs running in the background?
Stop an app from running in the background Select Start , then select Settings > Apps > Apps & features. Scroll to the desired app, select More options on the right edge of the window, then select Advanced options. In the Background apps permissions section, under Let this app run in the background, select Never.
How do I block unnecessary processes in Windows 10?
Solution 1. In Task Manager window, you can tap Process tab to see all running applications and processes incl. background processes in your computer. Here, you can check all Windows background processes and select any unwanted background processes and click End task button to terminate them temporarily.
How do I close multiple processes in Task Manager Windows 10?
From Task Manager, select Performance tab and click Open Resource Monitor. In Resource MOnitor, use Ctrl + Click to select the processes you want to kill, right click one of the selected processes, and choose End Process. This will kill all the selected processes.
Why do I have so many Svchosts running?
Excessive memory use could mean corruption or some other conflict within the operating system. More often than not, Svchost is being used by Windows and multiple instances are normal because many services utilize it. Worst-case scenario, the file is infected with a virus, the last thing you need on your computer.
How do I allow Windows 10 users to run only specific applications?
Run only specified Windows Applications Explore down to User Configuration > Administrative Templates > System in the left pane. Now double click Run only specified Windows Applications. From the checkbox, select Enabled.
How to disable multiple instances of an app on Windows 10?
In order to disable multiple instances of an app on Windows 10, you need to install a free app called SingleInstance. Go ahead and download, and run the app. The app, by default, has one app pre-configured and that’s the Calculator app on Windows 10.
How to prevent multiple instances of the same process?
TLDR: The only safe and general way to prevent multiple instances of the same process is to use a mutex, since only this is guaranted to not give you a race condition. Here you have a nice article about the subject. I used it when having to do something similar and the solution is working perfectly: AvoidingMultipleInstances.
Do apps need to run multiple instances on Windows 10?
Some apps do not need to run multiple instances. Other apps such as browsers, video players, word processors, etc., need to run multiple instances, and they do. That said, if you want to limit an app from running multiple instances, you can. Here’s how you can disable multiple instances of an app on Windows 10.
What happens if you open a file twice in Windows 10?
Generally speaking, users prefer apps to be able to run multiple instances but sometimes, the feature back fires. If you accidentally open a file twice, chances are the changes you’re making to it are overwritten or lost. In this case, it’s probably a good idea to disable the second instance from running at all.
