OneDrive displays a 0x8004de40 error for many reasons. Your internet connection may not be working, you may have not enabled the required TLS versions, your firewall may have blocked OneDrive’s access to the internet, and more.

Check Your Internet Connection

The most common reason you get a OneDrive error 0x8004de40 is that your internet connection isn’t working. Your connection may have stopped working, causing OneDrive not to establish a link to the cloud.

In this case, check and ensure your internet connection is working. You can do that by opening a web browser on your computer and accessing a site. If your connection has issues, your web browser won’t load your site.

You can try to resolve your internet problems using basic fixes like rebooting your router. If that doesn’t work, get in touch with your internet service provider (ISP) for more help.

Restart Your Windows PC

The next fix on the list is to reboot your PC. OneDrive or your computer may be experiencing a minor glitch, which you can resolve by turning your PC off and back on. This closes all the services running on your PC and reloads those services, fixing many minor problems.

You can reboot your Windows PC by opening the Start menu, selecting the Power icon, and choosing Restart.

Launch OneDrive when your PC turns on and see if the app connects to the internet.

Enable the Required TLS Versions on Your Windows PC

Microsoft recommends enabling various TLS versions on your PC to resolve a 0x8004de40 error in OneDrive. It’s easy to turn on these TLS versions on your PC.

1. Open the Run dialog box by pressing Windows + R.
2. Type the following in the box and press Enter: inetcpl.cpl
3. Open the Advanced tab on the window.
4. Enable the following TLS versions on the list. You may have to scroll down to view these versions.
   
   Use TLS 1.0
   Use TLS 1.1
   Use TLS 1.2

5. Select Apply followed by OK to save your changes.
6. Reboot your PC and open OneDrive.

Reset Winsock to Fix a OneDrive Error Code 0x8004de40

Winsock is an API that lets your internet-enabled apps, like OneDrive, talk to the underlying communication protocols, such as TCP/IP. It’s worth resetting this API when you experience issues connecting OneDrive to the cloud.

1. Open the Start menu, find Command Prompt, and select Run as administrator.
2. Choose Yes in the User Account Control prompt.
3. Enter the following command in CMD and press Enter:
   netsh winsock reset

4. Close Command Prompt and launch OneDrive.

Disable the Proxy on Your PC

It’s worth turning off your PC’s proxy option when you get a 0x8004de40 error in OneDrive. Your proxy may be affecting OneDrive’s connection to the internet, which you can resolve by disabling the feature.

On Windows 11

1. Open Settings by pressing Windows + I.
2. Select Network & internet in the left sidebar.
3. Choose Proxy on the right pane.
4. Turn off the Automatically detect settings option.

5. Select Set up next to Use a proxy server.
6. Disable the Use a proxy server option and select Save.

7. Reboot your PC and launch OneDrive.

On Windows 10

1. Access Settings by pressing Windows + I.
2. Choose Network & Internet in Settings.
3. Select Proxy in the left sidebar.
4. Turn off Automatically detect settings on the right.

5. Disable the Use a proxy server option as well.
6. Restart your PC and open OneDrive.

Add OneDrive to Your Firewall’s Safelist

One reason OneDrive fails to connect to the internet is that your firewall has blocked the app’s connection. In this case, modify your firewall settings so that OneDrive is always allowed to make outgoing and incoming network connections.

You can do that by adding the OneDrive app to your firewall’s whitelist as follows:

1. Open the Windows Security app on your PC.
2. Select Firewall & network protection > Allow an app through firewall in the app.

3. Choose Change settings at the top.
4. Enable both Private and Public checkboxes for Microsoft OneDrive on the list.

5. Select OK at the bottom.

Turn Off Your Computer’s Third-Party Antivirus Program

If you’ve installed a third-party antivirus program on your Windows PC, that program may be interfering with OneDrive’s working. That may be why the app can’t connect to the internet and load your files.

In this case, turn off the real-time protection in your antivirus app and see if that resolves your issue. If your issue persists, uninstall your antivirus program and see if that fixes the problem.

Reset OneDrive on Your Windows PC

If nothing else works, bring your OneDrive app to the factory settings to possibly fix your issue. This method should work if your app itself has a problem that is causing the app not to connect to the internet.

You don’t lose your files stored on OneDrive when you reset the app. However, the process will erase your custom preferences in the app.

1. Open Run by pressing Windows + R.
2. Type the following in the Run box and press Enter:
   
   %localappdata%\Microsoft\OneDrive\onedrive.exe /reset

3. If you receive an error saying “Windows cannot find…,” use the following commands. One of these commands will reset your OneDrive app.
   
   C:\Program Files\Microsoft OneDrive\onedrive.exe /reset
   C:\Program Files (x86)\Microsoft OneDrive\onedrive.exe /reset
   
4. When the reset process is finished, open your PC’s Start menu, find OneDrive, and launch the app.

Resolve Your OneDrive Connectivity Errors With Ease

OneDrive’s connectivity errors prevent you from uploading and downloading files from your cloud storage. You can make a few changes in the app and on your PC to potentially fix your issue. The methods outlined above help you do just that.

Once you’ve resolved your OneDrive error, you can upload as well as download any file you want from your online storage. Enjoy!

In this article, we’ll explain what the CTF Loader process is and why it’s important. Then, we’ll explain how you can reduce its high CPU usage.

What Is the CTF Loader Process?

CTF Loader, or ctfmon.exe, stands for Collaborative Translation Framework Loader. It’s an important Windows process that ensures that Windows components can communicate together and work effectively.

For example, Windows uses the CTF Loader to activate different languages in Microsoft Office’s Language Bar. It also enables speech recognition, keyboard translation, and text support for different input languages.

In other words, the CTF Loader process is integral to the Windows 10 and Windows 11 operating systems and is required for various components to work correctly.

However, it can often drain system resources, having a particularly noticeable effect on your CPU usage. And while CTF Loader is a completely benign and official Windows program, malware can be installed on your system that mimics the process.

If you’ve noticed that the CTF Loader is slowing down your computer significantly, here’s what you can do to fix the situation.

1. Make Sure CTF Loader is Authentic

Hackers often design their malware and viruses to masquerade as common, essential Windows processes so that they go unnoticed. Unfortunately, CTF Loader is one of the common targets for this practice.

So, before trying to fix the CTF Loader error, it’s worth making sure that the file is a legitimate executable and not malicious software.

To do so:

1. Right-click the Taskbar and select Task Manager.
2. Right-click CTF Loader and select Properties.

3. Copy the file path next to “Location.”

4. Open the File Explorer and paste the file path into the search bar, then press Enter.

5. Right-click Ctfmon.exe and select Properties.

6. Select the Details tab.
7. Make sure that next to “Copyright”, it says “© Microsoft Corporation. All rights reserved“.

If something else is written here, it’s very likely that you have malware on your hands.

Another way to tell whether or not the CTF Loader is legitimate is by checking its file path. It should only be installed in two locations:

1. C:\Windows\System32
2. C:\Windows\SysWOW64

If it’s installed anywhere else, it’s likely malware or spyware. In this case, you should use your antivirus program or Windows Defender (via Settings > Update & Security > Windows Security) to scan your computer and remove all traces of it.

2. Download Windows Updates

Pending or currently downloading Windows updates can occasionally cause the CTF Loader to go haywire. Download and install any currently pending Windows updates and check whether the CTF Loader stops using so much of your system resources.

To do so:

1. Press the Windows key + I to open Settings.
2. Select Update & Security.

3. Select Check for updates.

4. Download any available updates.

3. Disable the Touch Keyboard and Handwriting Panel Service

If disabling the Text Input Management Service didn’t work, you can try disabling a related service known as the Touch Keyboard and Handwriting Panel Service. To do so:

1. Press Ctrl + R to open the Run dialog box.
2. Type services.msc and press Enter.

3. Scroll down and double-click Touch Keyboard and Handwriting Panel Services.

4. Set the Startup type drop-down menu to Disabled.

5. Press OK.

4. Prevent the CTF Loader From Running

You can disable CTF Loader completely in a last-ditch effort to cut down its CPU usage. However, this can have a negative effect on Microsoft Office programs and other word processors — so proceed with caution!

To prevent CTF Loader from running:

1. Press the Windows key + R to open Run.
2. Type taskschd.msc and press Enter.

3. On the left side, double-click the Task Scheduler Library.
4. Navigate to Microsoft then Windows.

5. Double-click TextServicesFramework.

6. Right-click MsCtfMonitor and select Disable.

5. Check Whether Windows is Corrupted

Windows 10 and 11 provide a program known as the System File Checker which can scan and repair corrupt files. To use the SFC program:

1. Press Windows key to open the Start Menu.
2. Search for “Command Prompt.”
3. Right-click Command Prompt and select Run as administrator.

4. Type sfc /scannow and press Enter.

Wait for the utility to search and fix any potential issues in your system, then check whether the CTF Loader issue has gone away.

Get Your PC Up to Speed

There’s nothing worse than when your PC is bricked by a random process going haywire. But hopefully, this troubleshooting guide has helped you fix CTF Loader’s high usage of CPU resources. If not, your last resort is to perform a clean boot of your system.

Other reasons you can’t use the Mail app and get the above error are that the Mail app or your Windows operating system has a bug, Mail app’s core files are corrupt, your system files are unusable, and more.

Update Your Mail App to the Latest Version

One way to resolve an app’s issues is by updating the app to the latest version. You may be using an outdated Mail app version, which is causing the above error. You can fix that by bringing the app up to date.

You should keep your apps up to date regardless of whether you experience any issues or not.

1. Open the Start menu, find Microsoft Store, and launch the app.
2. Select Library in the left pane.
3. Choose Get updates at the top-right corner to find available app updates.

4. Select Update next to Mail and Calendar on the app list.
5. Close Microsoft Store and launch the Mail app.

Update Windows to Fix the Error Code 0x8019019a

Your Windows operating system may be experiencing an issue, causing the Mail app to display a “0x8019019a” error. You can resolve many issues with your system by simply updating the system to the latest version.

Updating Windows brings many bug fixes as well as possibly new features, resolving your PC issues and enhancing your overall experience with your computer.

1. Open Windows Settings using Windows + I.
2. Select Windows Update in the left sidebar.
3. Choose the Check for updates button on the right pane.

4. Download and install the available updates.
5. Reboot your PC and launch the Mail app.

Re-Add Your Yahoo Mail or Another Email Account in the Mail App

If you’ve had no luck fixing the “0x8019019a” error using the above methods, remove and re-add your email account in the app to possibly resolve your problem. This time around, use an app-specific password to re-add your email account in the app.

Since the above error usually appears while using a Yahoo mail account, we’ll show you how to generate an app-specific password with this email provider.

Step 1: Remove Your Email Account From the Mail App

You won’t lose your emails when you remove your email account, as your emails are synched with your email provider’s online servers.

1. Open the Mail app on your PC.
2. Select the gear icon in the bottom-left corner.

3. Choose Manage accounts in the open menu.
4. Select your email account on the list.
5. Choose Delete account from this device.

6. Select Delete at the bottom of the window to confirm your choice.
7. Quit the Mail app when you’ve removed your account.

Step 2: Generate an App Password

You’ll use an app-specific password instead of the main email password while re-adding your email account to the Mail app. The following shows you how to generate such a password in a Yahoo email account.

1. Open the Yahoo Account site in your web browser and sign in to your account.
2. Select Account security in the left sidebar and Generate app password on the right pane.

3. Select Get started on the open window.
4. Enter your app’s name in the text field and choose Generate password. You can enter any name in the field, but it’s a good idea to use a descriptive name.

5. Note the displayed password, as you’ll use this password to re-add your account in the Mail app.

Step 3: Add Your Email Account in the Mail App

With your email account’s username and password ready, follow these steps to add your account back in your Mail app:

1. Open the Mail app on your PC.
2. Select the gear icon in the bottom-left corner and choose Manage accounts > Add account in the menu.
3. Select Other account on the open window.

4. Enter your email address, name, and password and select Sign in.
5. Follow the on-screen instructions to finish adding your account in the app.

Reset the Windows Mail App

If the Mail app error “0x8019019a” still troubles you, the app may be experiencing technical issues. In this case, you can use Windows’ built-in repair option to try to repair the application. If that fails, reset the app, which clears all the app files.

1. Open Windows Settings by pressing Windows + I.
2. Select Apps in the left sidebar and Apps & features on the right pane.
3. Find the Mail and Calendar app, select the three dots next to the app, and choose Advanced options.

4. Select Repair in the Reset section on the following page.

5. If your Mail app issue persists, select the Reset button to reset the app.

Fix Windows’ Corrupt Files

One reason Mail displays a “0x8019019a” error is that your core system files are corrupt. This happens when a virus infects your system, or a malicious app alters your core Windows files.

In this case, you can use Windows’ built-in SFC (System File Checker) tool to find and fix all the corrupt files on your PC.

1. Open Start, find Command Prompt, and select Run as administrator.
2. Choose Yes in the User Account Control prompt.
3. Type the following command in the CMD window and press Enter. This command can take a while to finish executing, so be patient.
   DISM.exe /Online /Cleanup-image /Restorehealth

4. Run the following command to fix your faulty files:
   sfc /scannow
5. Open the Mail app when you’ve fixed your system’s bad files.

Remove and Reinstall Your Windows 10 Mail App

If your “0x8019019a” Mail app error hasn’t gone away yet, you can remove and reinstall the entire app to resolve your problem. Doing so deletes all of the app’s existing files and brings working new files, fixing issues with any problematic items.

1. Press Windows + I to open Windows Settings.
2. Select Apps in the left sidebar and Apps & features on the right pane.
3. Select the three dots next to Mail and Calendar and choose Uninstall.

4. Select Uninstall in the prompt.
5. Launch Microsoft Store, find Mail and Calendar, select the app, and choose Get.
6. Launch the newly-installed Mail app on your PC.

Resolve Mail App’s Errors Using Various Ways

When the Mail app displays a “0x8019019a” error, don’t panic. Instead, use the methods outlined above, and your issue will be fixed. You’ll then be back to your usual emailing sessions without any issues.

Good luck and happy emailing!

By default, Sticky Keys turns on automatically when you press the Shift key five times in a row. This article will show you how to turn Sticky Keys off.

How to Turn Off Sticky Keys Using a Keyboard Shortcut

You can disable Sticky Keys with the same keyboard shortcut that turns it on. Simply press the Shift key five times.

How to Turn off the Sticky Keys Shortcut Itself

If you find that you accidentally trigger the shortcut to turn it on and off, you can disable that shortcut.

Turn Off the Sticky Keys Shortcut in Windows 10

1. In the Search Bar, type Ease of Access and then select Ease of Access Keyboard Settings.

2. Under Use Sticky Keys, check the box next to Allow the shortcut key to start Sticky Keys.

Turn Off the Sticky Keys Shortcut in Windows 11

1. Open the Start Menu and open Settings.

2. In the Settings Menu on the left-hand side, select Accessibility.
3. Scroll down to the Interaction section and select Keyboard.

4. Select Sticky Keys.

5. Turn off both the Keyboard Shortcut for Sticky Keys and Turn off Sticky Keys when two keys are pressed at the same time options.

Turn Off Sticky Keys Using Windows Settings

To turn off Sticky Keys in the settings:

1. Open the Start Menu and select Settings.
2. In the Settings Menu on the left-hand side, select Accessibility.
3. Scroll down to the Interaction section and select Keyboard.

4. Toggle the Sticky Keys option off.

Note that this will not stop Sticky Keys from being reactivated when you press Shift 5 times again. You can turn off that shortcut using the procedures outlined in the previous section.

Unsticky Keys

While Sticky Keys (and the similar Filter Keys feature) can be helpful for those with specific impairments, it can also be frustrating as it causes constant pop-up dialog boxes while playing games. Hopefully, you can now quickly turn off and disable the Sticky Keys feature. If at any point you want to set up Sticky Keys again, you can just follow the above directions to turn it on.

In this troubleshooting guide, you’ll learn various methods to fix Outlook calendar synchronization issues on the iPhone. You can also use them to troubleshoot similar problems on the iPad and iPod touch.

1. Enable the Calendar (Outlook App Only)

If the events for a specific calendar fail to sync in Outlook for iOS, it could be because the calendar’s not enabled within the app. To check and fix that:

1. Switch to the Calendar tab in Outlook.
2. Tap your profile portrait or initials on the top-left corner of the screen.
3. Check the list of calendars. If the calendar is inactive, tap to enable it.

2. Activate Calendar Syncing (iOS Calendar Only)

If none of your Outlook calendars appear within the iPhone’s native Calendar, the chances are your Outlook account is not set to sync with the app. If you only see your iCloud calendars:

1. Open the Settings app.
2. Scroll down and tap Calendar.
3. Tap Accounts.

4. Tap Outlook.
5. Turn on the switch next to Calendars if it’s inactive.

3. Force-Quit and Relaunch Outlook/Calendar

Occasionally, the Outlook app or iOS Calendar can malfunction and stop syncing the latest Outlook calendar events. To fix that:

1. Swipe up from the bottom of the screen to bring up the App Switcher. If you use an iPhone with Touch ID, double-click the Home button.
2. Drag the Outlook or Calendar card to the top of the screen to remove it.
3. Exit to the Home Screen and relaunch Outlook or the default Calendar app.

4. Check the Outlook Server Status

Next, check the Outlook system status to rule out server-side issues from the equation. To do that, head to the Office Service Status portal and check the Current status next to Outlook.com. If there’s a problem, wait until Microsoft fixes it.

5. Toggle Airplane Mode on iPhone

Unexpected internet issues are another reason that prevents your Outlook calendars from syncing. If you’re looking for a quick way to restore connectivity, try enabling and disabling your iPhone’s Airplane Mode.

To do that, swipe down from the screen’s top-right to open the Control Center. Then, tap the Airplane Mode icon, wait for 10 seconds, and tap it again.

If the problem persists, switch from Wi-Fi to cellular data or vice versa. Or, connect to another Wi-Fi hotspot and check if that makes a difference.

6. Restart Your iPhone

A system software reboot refreshes the iPhone’s memory and clears potential glitches or errors preventing Outlook calendars from syncing. Additionally, the procedure resets your network connections and reestablishes communication between the device and the Outlook servers.

To do that, invoke Siri (press and hold the Side/Home button), say Restart iPhone, and tap Restart on the confirmation pop-up.

7. Enable Background App Refresh (Outlook App Only)

If Background App Refresh for Outlook is inactive on an iPhone, calendar data syncing fails unless the app runs in the foreground. If that’s what you’re dealing with:

1. Open the Settings app.
2. Scroll down and tap Outlook.
3. Enable Background App Refresh to provide the app permissions to run in the background.

8. Disable Low Data Mode on iPhone

iOS devices come with Low Data Mode, which restricts background data usage on Wi-Fi and cellular. Disabling the feature could fix iPhone calendar sync issues.

Disable Low Data Mode on Wi-Fi

1. Open the Settings app and tap Wi-Fi.
2. Tap the Info icon next to the active Wi-Fi connection.
3. Disable the switch next to Low Data Mode.

Disable Low Data Mode on Cellular

1. Open Settings and tap Cellular.
2. Tap Cellular Data Options.
3. Disable Low Data Mode.

9. Disable Low Power Mode on iPhone

Low Power Mode minimizes background activity to conserve battery life on the iPhone. If the amount of remaining battery isn’t an immediate concern, try deactivating the feature:

1. Open the Settings app.
2. Tap Battery.
3. Disable the switch next to Low Power Mode.

10. Reset Account (Outlook App Only)

The Outlook app for iOS lets you reset problematic accounts with synchronization problems. It’s a relatively straightforward process and you won’t lose any data. To reset an account in Outlook:

1. Open the Outlook app and tap your profile portrait or initials on the top left corner.
2. Select Settings.

3. Tap your Outlook email account under Mail Accounts.
4. Tap Reset Account.
5. Tap OK. Outlook should automatically shut down.

6. Relaunch the Outlook app to finalize the Outlook account reset.

11. Delete and Re-Add Account (iOS Calendar Only)

If the iOS Calendar fails to sync calendars from Outlook, try deleting and re-adding the Outlook account on your iPhone. That should refresh the account’s settings and fix underlying configuration errors. To do that:

1. Open the Settings app.
2. Go to Calendar > Accounts.

3. Select Outlook.
4. Tap Delete Account.
5. Tap Delete from My iPhone.

6. Restart your iPhone.
7. Return to Settings > Calendar > Account, tap Add Account, and re-add the Outlook account. Once you do that, don’t forget to sync iPhone Calendar with Outlook.

12. Update iOS and the Outlook App

Newer version updates for the iPhone’s operating system (iOS) or the Outlook app could contain bug fixes that address persistent calendar sync issues. Check for and install them next.

Update the iPhone’s System Software

Note: Updating the iPhone’s operating system also updates the Calendar app to its latest version.

1. Open the Settings app.
2. Go to General > Software Update.
3. Tap Download and Install.

Update the iPhone Outlook App

1. Open the App Store.
2. Search for the Outlook app.
3. Tap Update.

13. Reset Network Settings on iPhone

Resetting the iPhone’s network settings resolves possible Wi-Fi connectivity issues or other network configuration problems stopping Outlook calendars from syncing. To do that:

1. Open the Settings app on your iPhone.
2. Tap General > Transfer or Reset iPhone.
3. Tap Reset.

4. Tap Reset Network Settings.
5. Enter your device passcode and tap Reset Network Settings again to confirm.

Note: You must manually rejoin Wi-Fi networks after the network reset procedure.

Don’t Miss Your Outlook Calendar Events

Syncing Outlook calendars with an iPhone shouldn’t be a hassle. With the solutions above, you should be able to troubleshoot and resolve sync problems quickly and easily. From checking your calendar settings and disabling conflicting options to updating the system software, there are multiple ways to fix Outlook calendars and keep them up-to-date on your iOS devices.

That said, complications on non-Apple devices could also stop Outlook calendars from syncing. Learn how to fix Outlook sync problems on Windows, macOS, and Android.