API Unreachable Error

To ensure CyberGhost does not leave behind support files, preferences, or other components, use AppCleaner to remove the app and its related files completely.

Download AppCleaner.

1. Open your web browser and go to the official AppCleaner website.
2. Download the latest version of AppCleaner for macOS.
3. Once the download finishes, open Finder and select Downloads.
4. Double-click the downloaded .zip file to extract it. You should now see AppCleaner.app.
5. Drag AppCleaner.app into your Applications folder.

Open AppCleaner and Delete CyberGhost.

1. Go to Finder > Applications, then double-click AppCleaner.
2. If macOS asks whether you’re sure you want to open it, click Open.
3. Open another Finder window and go to Applications.
4. Find the CyberGhost VPN app, then drag and drop it into the AppCleaner window.
5. Wait for AppCleaner to scan your Mac for files associated with CyberGhost.
6. Leave the related CyberGhost files selected so AppCleaner can remove them along with the main app.
7. Click Remove. AppCleaner will delete the selected application and its associated files.
8. Enter your Mac password or use Touch ID if macOS asks you to authorize the removal.
9. Open the Applications folder and confirm that CyberGhost is no longer listed.

CyberGhost might leave behind network interfaces after you uninstall the app. Follow these steps to remove any CyberGhost-related interfaces.

1. Click the Apple menu in the upper-left corner of your screen.
2. Go to System Settings > Network.
3. Select VPN, then click the Info (i) icon next to CyberGhost’s configuration.
4. Click Remove Configuration, then confirm by clicking Remove if prompted.

Removing and reconnecting to your Wi-Fi network refreshes the connection and clears saved network settings that may be contributing to the API connection issue. 

Follow the steps below to remove the saved Wi-Fi network and reconnect to it.

1. Click the Apple menu in the upper-left corner of your screen.
2. Select System Settings and click Wi-Fi in the sidebar.
3. Click Details next to the Wi-Fi network you’re currently connected to.
4. Click Forget This Network and click Remove to confirm.
5. Return to the Wi-Fi settings.
6. Find your network under the list of available networks.
7. Click the network name to reconnect.
8. Enter the password for the Wi-Fi network when prompted.
9. Click OK.

Creating a new network location gives your Mac a fresh set of network settings, which can help resolve configuration issues that may be preventing CyberGhost from reaching the API.

Follow the steps below to reset the network location.

1. Click the Apple menu in the upper-left corner of your screen.
2. Select System Settings.
3. Click Network in the sidebar.
4. Click the More (…) button at the bottom of the Network settings.
5. Select Locations.
6. Click Edit Locations.
7. Click the plus (+) button.
8. Enter a name for the new location, such as CyberGhost Test.
9. Click Done.
10. Select the location you just created.
11. Click Done or Apply, depending on your macOS version.
12. Return to System Settings > Wi-Fi.
13. Select your Wi-Fi network.
14. Enter the Wi-Fi password if prompted, then click OK.

The following network troubleshooting steps can help refresh your Mac’s network connection and address connectivity problems.

Turn Wi-Fi Off and Back On

1. Click the Wi-Fi icon in the menu bar or Control Center.
2. Use the toggle to turn Wi-Fi off.
3. Wait a few seconds.
4. Turn Wi-Fi back on.
5. Wait for your Mac to reconnect to your network.

Restart Your Mac

1. Click the Apple menu in the upper-left corner of your screen.
2. Select Restart.
3. Click Restart again if macOS asks you to confirm.

Flush the DNS Cache

1. Open Finder.
2. Go to Applications > Utilities.
3. Double-click Terminal.
4. Enter the following command and press Return: “sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder”
5. Enter your Mac administrator password if prompted. The Terminal will not display the password as you type it.
6. Press Return.
7. Close the Terminal when the command finishes.

Reset the System Management Controller (SMC)

If you have a Mac with Apple silicon:

1. Click the Apple menu > Shut Down.
2. Wait until your Mac has completely turned off.
3. Wait about 30 seconds.
4. Press the power button to turn your Mac back on.

Macs with Apple silicon do not have a separate manual SMC reset procedure. Restarting or shutting down and turning the Mac back on resets the relevant power-management functions automatically.

If you have an Intel-based Mac with the T2 security chip:

1. Shut down your Mac.
2. On the built-in keyboard, press and hold Control + Option + Shift + Power button for 10 seconds.
3. Release all the keys and wait a few seconds.
4. Press the power button to turn your Mac back on.

Temporarily disabling the macOS firewall can help you determine whether it is blocking CyberGhost from reaching the API.

To disable your firewall, follow these steps.

1. Click the Apple menu in the upper-left corner of your screen.
2. Select System Settings.
3. Click Network in the sidebar.
4. Select Firewall.
5. Turn off the toggle.
6. If macOS asks you to authenticate, enter your administrator password or use Touch ID.

Third-party antivirus or security software can sometimes block CyberGhost from communicating with its API. Temporarily disabling the software can help you determine whether it is causing the connection issue. 

Follow these steps to disable your third-party antivirus software.

1. Open Finder > Applications and locate your antivirus app.
2. Open the antivirus application.
3. Look for an option such as Settings, Preferences, or Protection.
4. Open the section that controls real-time protection, web protection, firewall features, or network monitoring.
5. Turn off or pause the antivirus protection temporarily.
6. Enter your administrator password or use Touch ID if macOS asks you to authorize the change.
7. Click the Apple menu in the upper-left corner of your screen.
8. Select Restart.
9. Click Restart again if macOS asks you to confirm.

After completing the previous troubleshooting steps, reinstall the latest version of CyberGhost to make sure you’re using fresh app files with the most recent updates.

1. Open your web browser and visit the CyberGhost website.
2. Download the latest version of the CyberGhost VPN app for macOS.
3. Once the download finishes, open the downloaded installation file.
4. If macOS displays a security prompt, click Open to continue.
5. Follow the on-screen instructions to install the app.
6. Enter your Mac administrator password or use Touch ID if macOS asks you to authorize the installation.
7. Wait for the installation to finish.
8. Open Finder > Applications.
9. Double-click CyberGhost VPN.
10. Sign in and connect to a server. 

If you continue to see the “API unreachable” error, please contact Customer Support for assistance.

Removing CyberGhost and any leftover files helps ensure that a clean reinstall does not reuse damaged or outdated app data.

Follow these steps to fully uninstall CyberGhost:

1. Press the Windows key.
2. Type “Control Panel,” then open it.
3. Select Programs.
4. Click Uninstall a program under Programs and Features.
5. Find CyberGhost VPN in the list of installed programs and select it.
6. Click Uninstall at the top of the window.
7. Confirm that you want to remove CyberGhost if prompted.
8. Follow the on-screen instructions until the uninstall process is complete.
9. Press Windows + E.
10. Type the following path in the File Explorer address bar: “C:\Program Files\” and press Enter.
11. Look for a folder named CyberGhost.
12. If the folder exists, right-click it and select Delete.
13. Approve the action if Windows asks for administrator permission.
14. Type the following path in the File Explorer address bar: “%LOCALAPPDATA%\” and press Enter.
15. Look for a folder named CyberGhost.
16. If the folder exists, right-click it and select Delete.
17. Type the following path in the File Explorer address bar: “%APPDATA%\” and press Enter.
18. Look for a folder named CyberGhost.
19. If the folder exists, right-click it and select Delete.
20. Restart your PC.

Resetting your network configuration can clear corrupted TCP/IP, Winsock, and DNS settings that may prevent CyberGhost from reaching the API.

To reset your network settings:

Open Command Prompt as an Administrator

1. Click the Start button.
2. Type cmd or Command Prompt.
3. Right-click Command Prompt in the search results.
4. Select Run as administrator.
5. If the User Account Control prompt appears, click Yes.

Reset Winsock

1. In the Command Prompt window, type “netsh winsock reset” and press Enter.
2. Wait for Windows to confirm that the Winsock catalog was reset successfully.
3. Type “netsh int ip reset” and press Enter.
4. Wait for the command to finish.

Release Your Current IP Address

1. Type “ipconfig /release” and press Enter.

Your internet connection may disconnect temporarily. This is expected.

Request a New IP Address

1. Type “ipconfig /renew” and press Enter.
2. Wait for Windows to obtain a new IP address from your network.

Flush the DNS Cache

1. Type “ipconfig /flushdns” and press Enter.
2. Wait for Windows to confirm that it successfully flushed the DNS resolver cache.
3. Close Command Prompt.

Restart Your PC

1. Open the Start menu.
2. Select Power > Restart.

Temporarily disabling Windows Defender Firewall can help you determine whether it is blocking CyberGhost from reaching the API.

1. Click the Start button.
2. Type Control Panel, then open it.
3. Select System and Security.
4. Click Windows Defender Firewall.
5. In the left-hand menu, click Turn Windows Defender Firewall on or off.
6. Under Private network settings, select Turn off Windows Defender Firewall (not recommended).
7. Under Public network settings, select Turn off Windows Defender Firewall (not recommended).
8. Click OK to save the new settings.
9. If Windows asks for administrator permission, approve the change.

Third-party antivirus software can sometimes interfere with CyberGhost’s network connections. Temporarily disabling real-time protection can help you determine whether your antivirus is causing the “API unreachable” error.

To disable your antivirus, follow these steps.

1. Click the Start button and find your antivirus software in the list.
2. Open the antivirus app.
3. Look for a section such as Settings, Protection, Security, or Real-Time Protection.
4. Open the controls for real-time scanning, web protection, firewall protection, or network protection.
5. Turn off or pause real-time protection.
6. Approve any confirmation or administrator prompt that appears.
7. Restart your PC.

Other VPN or proxy software can interfere with CyberGhost’s network connections. Check for any conflicting apps or unused VPN adapters before continuing.

1. Check the system tray in the lower-right corner of the taskbar for any other VPN or proxy applications.
2. Right-click the app icon and select Exit, Quit, or Disconnect, depending on the app.
3. Open Task Manager and confirm that the other VPN or proxy app is no longer running.
4. Right-click the Start button.
5. Select Device Manager.
6. If Windows asks for administrator permission, approve the prompt.
7. Find Network adapters in Device Manager, 
8. Click the arrow next to it to expand the list.
9. Review the adapters for entries such as TAP-Windows Adapter or other virtual network adapters installed by VPN software.
10. Identify adapters you recognize as belonging to VPN software you no longer use.
11. Right-click the unused TAP adapter.
12. Select Uninstall device.
13. If Windows gives you the option to remove the associated driver software, select it only if you are sure you no longer need that VPN software.
14. Click Uninstall to confirm.
15. Repeat the process to remove any other unused TAP adapters associated with old or conflicting VPN applications.
16. Restart your PC.

Reinstalling the latest version of CyberGhost helps ensure you’re using fresh app files and the newest available updates.

1. Open your web browser and go to the CyberGhost website.
2. Download the latest version of CyberGhost VPN for Windows.
3. Open File Explorer.
4. Go to your Downloads folder or the location where you saved the installer.
5. Find the CyberGhost installation file.
6. Right-click the installer and select Run as administrator.
7. If the User Account Control prompt appears, click Yes.
8. Follow the on-screen instructions to complete the installation.

Restart your PC after completing the troubleshooting steps to make sure Windows applies all network, firewall, driver, and application changes.

1. Close any open applications.
2. Click the Start button.
3. Select Power.
4. Click Restart.
5. Wait for your PC to restart.
6. Sign in to your Windows account when prompted.
7. Make sure your PC reconnects to Wi-Fi or Ethernet.
8. Open CyberGhost VPN and check whether the API Unreachable error still appears.

If you continue to see the “API unreachable” error, please contact Customer Support for assistance.

Resetting your iPhone’s network settings can clear saved Wi-Fi, cellular, VPN, and other network configurations that may be preventing CyberGhost from reaching the API.

To reset your network settings:

1. Open the Settings app.
2. Tap General.
3. Scroll down and tap Transfer or Reset iPhone.
4. Tap Reset.
5. Tap Reset Network Settings.
6. Enter your iPhone passcode if prompted.
7. Tap Reset Network Settings again to confirm.
8. Your iPhone will restart automatically as part of the reset process. Wait until the device finishes restarting.
9. Open Settings > Wi-Fi.
10. Select your Wi-Fi network.
11. Enter the Wi-Fi password, then tap Join.

Removing old or conflicting VPN configurations can help CyberGhost create a fresh VPN profile and restore normal connectivity.

Follow these steps to manually reconfigure VPN settings.

1. Open the Settings app.
2. Tap General.
3. Scroll down and tap VPN and Device Management.
4. Tap VPN.
5. Identify any old CyberGhost profiles or VPN configurations that belong to VPN apps you no longer use.
6. Tap the info (i) icon next to the VPN configuration you want to remove.
7. Tap Delete VPN then Delete to confirm.
8. Repeat this process for any other old or conflicting VPN profiles.
9. Open the CyberGhost VPN app.
10. Follow the on-screen prompts. When iOS asks for permission to add a VPN configuration, tap Allow.
11. Enter your iPhone passcode, or authenticate with Face ID or Touch ID if prompted.

Low Data Mode can restrict background network activity, which may interfere with CyberGhost’s ability to communicate with its API. 

To disable Low Data Mode, follow these steps.

1. Open the Settings app.
2. Tap Cellular.
3. Tap Cellular Data Options.
4. Tap Data Mode.
5. Make sure Low Data Mode is not selected.
6. Select Standard or Allow More Data on 5G, if available.

Reinstalling CyberGhost gives you a fresh copy of the app and can resolve issues caused by damaged or outdated app files.

Delete CyberGhost From Your iPhone

1. Find CyberGhost VPN on your Home Screen or in the App Library.
2. Touch and hold the CyberGhost icon.
3. Tap Remove App.
4. Tap Delete App.
5. Tap Delete again to confirm.

Reinstall CyberGhost From the App Store

1. Open the App Store.
2. Search for CyberGhost VPN.
3. Tap the download icon to reinstall the app.
4. Tap Open in the App Store, or open CyberGhost from your Home Screen.
5. Sign into your CyberGhost account.
6. If iOS asks for permission to add a VPN configuration, tap Allow.
7. Authenticate with your passcode, Face ID, or Touch ID if prompted.
8. Try connecting to a VPN server.

If you continue to see the “API unreachable” error, please contact Customer Support for assistance. 

Resetting your network settings can clear saved Wi-Fi, mobile network, and Bluetooth configurations that may be interfering with CyberGhost.

To reset your network settings:

1. Open the Settings app.
2. Tap More Connectivity Options.
3. Tap Reset Wi-Fi, mobile, and Bluetooth. On some Android devices, this option may be named Reset Wi-Fi, mobile networks, and Bluetooth or Reset network settings.
4. Tap Reset settings.
5. Enter your PIN, password, or pattern if prompted.
6. Tap Reset settings again to confirm.
7. Press and hold the power button.
8. Tap Restart.
9. Wait for your device to start again.
10. Open Settings > Network and internet > Internet.
11. Select your Wi-Fi network.
12. Enter the Wi-Fi password, then tap Connect.

Note: Resetting your network settings removes saved Wi-Fi networks and passwords, Bluetooth pairings, and some mobile network settings. You’ll need to reconnect to Wi-Fi networks and Bluetooth devices afterward.

Private DNS can sometimes interfere with CyberGhost’s ability to reach its API. Temporarily disabling it can help you determine whether it is causing the connection issue.

Follow these steps to disable private DNS.

1. Open the Settings app.
2. Tap Network and internet.
3. Tap Private DNS. On some Android devices, you may need to tap Advanced first.
4. Select Off. If your device does not offer an Off option, select Automatic instead.
5. Tap Save if your device shows a Save button.

Reinstalling CyberGhost replaces the existing installation with a fresh version, which can fix problems related to corrupted or outdated app files.

1. Find the CyberGhost VPN app on your Home screen or in the app drawer.
2. Touch and hold the app icon.
3. Tap Uninstall.
4. Tap OK or Uninstall again to confirm, depending on your device.
5. Open the Google Play Store app.
6. Tap the search bar at the top of the screen.
7. Search for CyberGhost VPN.
8. Select CyberGhost VPN from the search results.
9. Tap Install.
10. Wait for the app to download and install.
11. Tap Open in the Google Play Store, or open CyberGhost from your Home screen or app drawer.
12. Log into your CyberGhost account.
13. Follow the on-screen prompts.
14. If Android asks you to allow CyberGhost to set up a VPN connection, tap OK or Allow.
15. Connect to a VPN server.

If the “API unreachable” error still appears, continue to the next steps.

Other VPN profiles or apps can conflict with CyberGhost and interfere with its connection. Remove any VPN configurations you no longer use before testing CyberGhost again.

1. Open the Settings app.
2. Tap Network and internet.
3. Tap VPN. On some Android devices, you may need to tap More connection settings, Connections, or a similar option to find the VPN settings.
4. Look through the VPN profiles listed on your device.
5. Identify any profiles that do not belong to CyberGhost or that you no longer use.
6. Tap the Settings icon next to the VPN profile you want to remove.
7. Tap Forget VPN, Delete VPN profile, or a similar option, depending on your device.
8. Confirm the removal if prompted.
9. Repeat this process for any other unused VPN profiles.
10. Check for other VPN apps.
11. Open the app drawer or go to Settings > Apps.
12. Look for any other VPN or proxy apps installed on your device.
13. If you no longer use the app, select it and tap Uninstall.
14. Confirm the uninstall if prompted.
15. Restart your device.
16. Open the CyberGhost VPN app.
17. Connect to a VPN server. 

If the “API unreachable” error still appears, continue to the next steps.

Android’s battery optimization features can restrict CyberGhost’s background activity. Allowing the app to run without battery restrictions can help prevent connection interruptions.

1. Open the Settings app.
2. Tap Apps.
3. Find and select CyberGhost VPN.
4. Tap Battery.
5. Select Unrestricted. On some Android devices, this option may be called Don’t optimize, Not optimized, or Allow background activity.

Note: The exact battery settings can vary depending on your Android version and device manufacturer.

Data Saver can restrict background data usage, which may interfere with CyberGhost’s ability to communicate with its API. Turn it off temporarily or allow CyberGhost to use unrestricted data.

1. Open the Settings app.
2. Tap Network and internet.
3. Tap Data Saver.
4. Turn off the Use Data Saver toggle.
5. If you prefer to keep Data Saver enabled, go to Settings > Network and internet > Data Saver.
6. Tap Unrestricted data or Unrestricted data access.
7. Find CyberGhost VPN in the list.
8. Turn on unrestricted data access for CyberGhost.

Note: The exact menu names may vary depending on your Android version and device manufacturer.

If the “API unreachable” error still appears, try these additional checks to rule out common Android connectivity issues.

Restart Your Device

1. Press and hold the power button.
2. Tap Restart.
3. Wait for your device to turn back on.
4. Open CyberGhost and check whether the error still appears.

Switch Between Wi-Fi and Mobile Data

1. If you’re connected to Wi-Fi, turn Wi-Fi off and switch to mobile data.
2. If you’re using mobile data, connect to a Wi-Fi network instead.
3. Open CyberGhost and test the connection again.
4. If CyberGhost works on one connection but not the other, the issue may be related to that specific network.

Check Date and Time Settings

1. Open the Settings app.
2. Tap Additional Settings.
3. Tap Date and time.
4. Turn on Set time automatically.
5. If available, also turn on Set time zone automatically.
6. Return to CyberGhost and test the connection again.

Temporarily Disable Any Firewall or Antivirus Apps

1. Open any third-party firewall, antivirus, or security app installed on your device.
2. Look for an option to pause or temporarily disable its protection.
3. Disable the protection briefly, then open CyberGhost and test the connection.
4. Re-enable the security app after testing.

If you continue to see the “API unreachable” error, please contact Customer Support for assistance. 

Resetting your network settings removes saved Wi-Fi, mobile network, and Bluetooth configurations, which can help resolve connectivity problems affecting CyberGhost.

1. Open the Settings app.
2. Tap Additional Settings.
3. Tap Reset options. On some older Android devices, you may need to go to Settings > Backup and reset or Settings > General management > Reset instead.
4. Tap Reset Wi-Fi, mobile, and Bluetooth. On some devices, this option may be called Network settings reset or Reset network settings.
5. Tap Reset settings.
6. Enter your PIN, password, or pattern if prompted.
7. Tap Reset settings again to confirm.
8. Restart your device.

Removing old or unused VPN profiles can help prevent configuration conflicts and allow CyberGhost to create a fresh VPN connection.

1. Open the Settings app.
2. Tap Network and internet.
3. Tap VPN. On some older Android devices, you may need to tap More, More connection settings, or a similar option before you see VPN.
4. Look through the VPN profiles saved on your device.
5. Identify any old CyberGhost profiles or VPN profiles you no longer use.
6. Tap the Settings icon next to the VPN profile you want to remove.
7. Tap Forget VPN, Delete VPN profile, or a similar option.
8. Confirm the removal if prompted.
9. Repeat this process for any other old or unused VPN profiles.
10. Return to the Home screen or app drawer.
11. Open the CyberGhost VPN app.
12. Follow the prompts in the CyberGhost app.
13. When Android asks you to allow CyberGhost to set up a VPN connection, tap OK.
14. Approve any additional prompts that appear.

Low Data Mode can limit background data usage and may prevent CyberGhost from communicating properly with its API.

To disable data saver, follow these steps:

1. Open the Settings app.
2. Tap Network and internet.
3. Tap Data Saver.
4. Turn off Use Data Saver or the Data Saver toggle. On some older Android devices, the wording or menu location may be slightly different.

Reinstalling CyberGhost can resolve issues caused by damaged or outdated app files.

1. Open the Settings app.
2. Tap Apps.
3. Find and tap CyberGhost VPN. On some older Android devices, you may need to tap Application manager or Manage apps first.
4. Tap Uninstall.
5. Tap OK to confirm and wait for Android to remove the app.
6. Open the Google Play Store app.
7. Tap the search bar.
8. Search for CyberGhost VPN.
9. Select CyberGhost VPN from the search results.
10. Tap Install and wait for the download and installation to finish.
11. Open CyberGhost and sign in.
12. Follow the prompts in the app.
13. If Android asks you to allow CyberGhost to set up a VPN connection, tap OK.
14. Connect to a VPN server.

If the “API unreachable” error still appears, continue to the next steps.

The following checks can help address other common Android connectivity problems that could affect CyberGhost.

Restart Your Device

1. Press and hold the power button.
2. Tap Restart.
3. Wait for your device to turn back on.
4. Open CyberGhost and check whether the error still appears.

Switch Between Wi-Fi and Mobile Data

1. If you’re connected to Wi-Fi, turn Wi-Fi off and switch to mobile data.
2. If you’re using mobile data, connect to a Wi-Fi network instead.
3. Open CyberGhost and test the connection again.
4. If CyberGhost works on one connection but not the other, the issue may be related to that specific network.

Check Your Date and Time Settings

1. Open the Settings app.
2. Tap Additional Settings.
3. Tap Date and time.
4. Turn on Automatic date and time or Use network-provided time, depending on your device.
5. If available, also enable Automatic time zone.
6. Return to CyberGhost and test the connection again.

Temporarily Disable Any Firewall or Antivirus Apps

1. Open any third-party firewall, antivirus, or security app installed on your device.
2. Look for an option to pause or temporarily disable its protection.
3. Disable the protection briefly, then open CyberGhost and test the connection.
4. Re-enable the security app after testing.

If you continue to see the “API unreachable” error, please contact Customer Support for assistance.