Fix Bitdefender Update Errors -1002, -1004, -1011 and more on Windows (2024)

3

1. Click the Windows Start button and type Command Prompt in the search bar, then right-click on the result and select Run as Administrator.
2. Type chkdsk c: /r and press Enter on your keyboard. Make sure to include the spaces indicated.
3. Enter Y when asked whether you wish to run Chkdsknext time the system restarts.
4. Restart the PC.

19

21

Run a Windows check disk

1. Click the Windows Start button and type Command Prompt in the search bar, then right-click on the result and select Run as Administrator.
2. Type chkdsk c: /r and press Enter on your keyboard. Make sure to include the spaces indicated.
3. Enter Y when asked whether you wish to run Chkdsk next time the system restarts.
4. Restart the PC.

Run the System File Checker tool

1. Click the Windows Start button and type Command Prompt in the search bar, then right-click on the result and select Run as Administrator.
2. Type sfc /scannowthen press ENTER on your keyboard.
3. Wait until the SFC verification reaches 100% and fixes the errors automatically.

Run the DISM command (only for Windows 8, 10, 11)

1. If the SFC command fails or can’t replace a corrupted file click the Windows Start button . Type Command Prompt in the search bar, then right-click on the result and select Run as Administrator.
2. Type Dism /Online /Cleanup-Image /RestoreHealth and then press Enter on your keyboard.
3. Wait until the operation reaches 100% and fixes any system issues, then restart the computer.

-100

Check how many update errors -100 were encountered by the Bitdefender product and see if any of them were followed by successful updates. Ifthey were followed by successful updates, it means Bitdefender is up-to-date and no further actions are required.

-1002

-1011

Make sure the connection is stable, then try again to update Bitdefender.

-1004

If you connect to the internet via proxy

• Open Bitdefender, go to “Settings” > “Advanced” > enable “Proxy server”. Bitdefender will import your proxy settings from the default browser.
• If custom proxy settings are required, while still in the “Advanced” tab from Bitdefender “Settings”: click “Proxy Change” > select “Custom proxy settings” then fill in the required information.

If you don’t have a proxy connection

• Open Bitdefender, go to “Settings” > “Advanced”, and make sure “Proxy server” is turned OFF.
• If the error persists, follow these steps to remove any proxy settings.

-1022

Restart the router, then reboot your computer and check if Bitdefender can perform successful updates.

If the errors persist, try changing the DNS settings on Windows.

1455

Allow Windows to automatically manage the pagefile settings.

1. Open the Control Panel and go to System and Security > System.
2. From the left pane of the System window click on “Advanced system settings”.
3. Open the “Advanced” tab of the new window then click the “Settings” button in the Performance section.
4. In Performance Options click the “Advanced” tab.
5. Click the “Change” button in the Virtual memory section.
6. Check the box next to “Automatically manage paging file size for all drives” then restart the computer.

-2002

-2009

If your Windows PC encounters one of these update error codes, wait a few hours before trying to update Bitdefender again.

-2021

Install missing knowledge baseKB4490628 andKB4474419 packages:

for 32-bit Windows| for 64-bit Windows

Not sure if your computer is running a 32-bit or a 64-bit Windows version? This guide will help you.

Other update error codes

1. Try to update again at a later time.
2. Restart the PC then check if the update succeeds.
3. Connect the PC to another network:

A. If the updates are successful on other networks, the issue is with the default network configuration. Try changing the DNS and disabling 3rd party firewall programs.

B. If the update errors persist on other networks as well, uninstall and reinstall Bitdefender.

If Bitdefender still fails to perform updates, contact Bitdefender support.