I can't open task manager in windows 10.

Dear Prashanth337,I understand that you managed to solve the problem;

In that case it would be interesting if you could share with us how to solve the problem and then mark the issue as "Solved" so that you can help other people with the same problem;

We are available;

See you soon!

Dear Prashanth337,do you use any non-Microsoft anti-virus? If so, I recommend that you completely uninstall for testing;

Make a clean boot:

Clean boot serves to determine whether a background program is interfering with the system or optimizing system loading.

1. Press the Windows + R keys, type msconfig and click OK;
2. In the System Configuration window, click on the services tab;
3. At the bottom of the screen, check the Hide all Microsoft services box and click Disable all;
4. Now click on the Programs Startup tab and on Open Task Manager;
5. When loading the task manager, click on the start tab and disable all non-Microsoft programs (right-click on the program and choose disable), close the Task Manager and click OK on system configuration and restart computer if requested.

NOTE: This procedure disables all third party services and programs. You can later, if the problem is solved in this way, selectively enable the programs and services that will start with Windows, instead of keeping all disabled. If the problem returns after activating the startup of a specific service or program, the problem is exactly in the startup of this software and it is recommended to remove it.

Check for new updates on Windows Update:

1: Open the Windows 10 "Start" menu and select the "Settings" item.

2: then select the "Update and Security" option.

3: in the "Windows Update" section, click "Check for updates".

4: If there are no updates, the message "You are up to date" will be displayed.

5: if there is any pending system update, the message "Features update for Windows 10 ..." will be displayed, then click on the "Download and install" item to start the system update.

6: wait for the update download to finish and restart the PC, or schedule a restart to be able to finish the procedure.

Run system file checker;

Press the Windows + X keys, select Command Prompt (Admin), copy and paste the commands below and press enter after each command.

Sfc /ScanNow

DISM /Online /Cleanup-Image /ScanHealth

Dism /Online /Cleanup-image /RestoreHealth

Wait for the process to finish and restart the pc;

Check if the problem is fixed;

I hope I helped, even more!

Hello Prashanth337, welcome to the Microsoft community, I'll be happy to help you today;

I understand you are having trouble opening the task manager in Windows 10;

Initially, I recommend that you follow the instructions provided in the video below:

https://www.youtube.com/watch?v=n9D4QVRJ1cY

After following the instructions check if the task manager can now be started;

I hope I have helped, see you soon!

Hello,

See if this fix helps you:

https://www.kapilarya.com/fix-cant-open-task-manager-in-windows-10

Let us know if this helps!

Note: Included link in this reply refers to blog post by a trusted Microsoft MVP.

In Registry there is no taskmgr.exe.

But i downloaded windows 10 update still facing error.

But i did not download windows 10 media.

If i download windows 10 media error will be fixed or not?