Like all other aspects of Windows 10, the Task Scheduler is also affected by quite a lot of different issues and problems. One issue, in particular, is where affected users receive the following error message whenever they try to launch Task Scheduler:
“Task Scheduler service is not available. Task Scheduler will attempt to reconnect to it.”
Dismissing this error message by closing it or clicking on OK simply causes it to come up again, at which point the Task Scheduler becomes unresponsive and can’t even be closed by ordinary means. When the Task Scheduler gets like this, affected users can only close it by killing it in the Task Manager (Ctrl + Shift + Esc). Most people have theorized that this issue is caused by a corruption of some registry values pertaining to the Task Scheduler, and while that may quite possibly be true, the cause of this problem has not actually been discovered yet.
Thankfully, though it is entirely possible to fix this issue, and there are two methods in particular that Windows 10 users who have suffered from this issue in the past have been able to use to get rid of it. The following are the two most effective solutions to this issue:
Solution 1: Perform a repair install of Windows 10
A repair install of Windows 10 is basically an upgrade-installation of the OS, although it is tailored to repair problems with Windows 10 and can be performed while leaving any and all data and programs on a computer untouched. A repair install of Windows 10 can be performed using a Windows 10 ISO or a USB or DVD that has had a Windows 10 ISO burnt onto it, but the most convenient medium that can be used to perform a repair install of Windows 10 is the Media Creation Tool. Here’s what you need to do in order to perform a repair install of Windows 10:
Make sure that you are signed into an Administrator account and that you have uninstalled any and all third-party antivirus and computer security programs.
Go here and click on Download tool now to download the Media Creation Tool from the official Microsoft website.
Once the Media Creation Tool has been downloaded, navigate to the directory where it has been saved and double-click on it to launch it.
If prompted by UAC (User Access Control), click on Yes or provide the password to the account you are logged into – whichever is required to move on.
Click on Accept to accept the license terms of Windows 10.
On the next screen, select Upgrade this PC now and then click on Next.
The Media Creation Tool will now begin downloading Windows 10 – let it do so.
Once the Media Creation Tool has downloaded Windows 10, it will start preparing the installation files and the computer for the in-place upgrade that will facilitate the repair install.
If there are any important updates available for your computer, you will be alerted about them on the next screen. While you can choose to skip the downloading and installation of these updates (they will be downloaded and installed later via Windows Update, it would be best for you to select Download and install updates (recommended), check the checkbox beside I want to help make the installation of Windows better, and click on Next.
The Media Creation Tool will now begin getting things ready for the upgrade. Simply wait patiently at this point.
You will once again be provided with some license terms. Click on Accept to agree to them.
The Media Creation Tool will now make sure that your computer is ready for the upgrade (has enough free disk space, for example). Just sit back and wait.
Once done, the Media Creation Tool will display the Ready to install Once at this screen, make sure that the Media Creation Tool will be preserving all of your data and applications by clicking on Change what to keep, making sure that Keep personal files and apps is selected and clicking on Next, and then click on Install to initiate the repair install of Windows 10.
The in-place upgrade to repair Windows 10 will now begin. Just relax and wait for the repair install to be completed successfully.
When the repair install is completed, you will be presented with a screen welcoming you back. At this point, click on Next.
Click on Use Express settings and, on the next couple of screens, fine-tune your Personalization, Location, Browser and protection and Connectivity and error reporting preferences, clicking on Next once done.
Click on Next on the New apps for the new Windows
You will now be met with the Windows 10 login screen. Once there, login to your account and, if needed, correct your time and date settings.
Launch the Task Scheduler and check to see whether or not the problem has been fixed.
Solution 2: Use Tweaking.com’s repair tool to fix this problem
If you were not able to fix this problem using Solution 1, you might just be able to achieve success using Tweaking.com’s repair tool – a repair utility designed to fix a wide variety of Windows 10 issues, especially those pertaining to the Registry.
Go here and download either a portable version of the repair tool or an installer for it using one of the available download mirrors. (It is recommended that you download the repair tool from the com mirror.)
Uncompress the .ZIP file containing the repair tool using a compression program such as WinRAR.
Open the folder that appears when the .ZIP file has been uncompressed.
Double-click on the application (.EXE file) named Repair_Windows to launch the repair tool.
Carry out Step 1 (a complete power reset), if you feel that it may be helpful.
You can (and should) skip Steps 2, 3 and 4.
Be sure to create backups of both your Registry and your system as a whole in Step 5.
Once you have successfully carried out Step 5, navigate to the Repairs tab and click on Open Repairs.
In the window that opens, select all – yes, ALL – the repairs in the list by checking the checkboxes beside them, and once all of them have been selected, click on Start Repairs to begin the process. Once the repairs have began, simply wait for all of them to be concluded successfully, restart your computer, launch the Task Manager once it boots up and check to see whether or not the problem has been fixed.