In addition, it’s possible for you to also visit MiniTool to find more Windows solutions and tips.
What Is the Error Cannot Create New Folder Windows 10?
Then what may cause the error Windows 10 cannot create new folder?

Solution 1.
Check Your Antivirus
The antivirus software is able to safeguard your box and data.
But, on the other hand, the antivirus sometimes may lead to some issues.

If this solution does not work, you could switch to other solutions.
Solution 2.
Now, here is the tutorial.

Step 1: key in Command Prompt in the search box of Windows and choose the best-matched one.
Then right-click it to chooseRun as administratorto continue.
Step 2: In the command line window, bang out the commandsfc /scannowand hitEnterto continue.

kindly do not exit the command line window until the process is finished.
Related article:Quickly Fix SFC Scannow Not Working (Focus on 2 Cases)
Solution 3.
Now, we will show you the detailed instructions.

Step 1: PressWindowskey andRkey together to openRundialog, then typeSYSDM.CPLin the box and clickOKto continue.
Step 2: In the System Properties window, go to theAdvancedtab, and clickSettings…underPerformancesection.
Step 4: After that, clickChange…underVirtual memoryon the same page.

Step 5: Then check the optionAutomatically managing paging files for all drives.
After that, clickOKto confirm and execute all changes.
When it is finished, check the error cannot create new folder Windows 10 is solved.

But modifying registry is a risky thing, soback up the registrybefore that.
Now, we will show you how to modify the registry key.
Step 1: PressWindowskey andRkey together to openRundialog, then typeregeditin the box and clickOKto continue.

Step 2: In the pop-up window, navigate to the following folder.
Computer\HKEY_CLASSES_ROOT\Directory\Background\shellex\ContextMenuHandlers
Step 3: Then right-hit the right panel and chooseNew>Keyto continue.
Step 4: Name the new key asNew.
Step 5: opt for New key and double-click theDefaulton the right panel.
Solution 5.
Step 1: PressWindowskey andRkey together to openRundialog, then typemsconfigin the box and clickOKto continue.
Step 3: Switch toStartup.
Step 4: ClickOpen Task Manager.
Step 5: grab the startup program that may interface with Windows 10 and clickDisable.
Repeat the steps to disable other programs.
After that, kickstart your system and check whether the error unable to create new folder is solved.
There is another available way for you to solve the problem cannot create new folder Windows 10.
If you have come across the same problem, try these solutions to help out.