Fix Bcmlogon.dll Failed to Load Error

Bcmlogon.dll (Wireless Network Logon Provider) is a component of the Wireless Network Logon Provider version 3.120.0 software of Broadcom Corporation. This file is known to be 294,912 bytes in size. Bcmlogon.dll is commonly found in the System32 folder on Windows.

Error Message

An error message is displayed on the user?s screen when trying to use Fast User Switching.

A recently installed program has disabled the Welcome screen and Fast User Switching. To restore these features, you must uninstall the program. The following file name might help you identify the program that made the change: C:\WINDOWS\system32\BCMLogon.dll

User Interface Failure

The Logon User Itnerface DLL
C:\WINDOWS\system32\BCMLogon.dll failed to load.

Contact your system administrator to replace the DLL, or restore the original DLL

In these scenarios, the Welcome Screen is disabled. The user cannot get to the logon screen and the computer has lost internet connection.

How to Repair the Bcmlogon.dll Failed to Load Error

There are several suggested methods for repairing this error and restoring Fast User Switching. All of these methods require that you reset GinaDLL to work.

Method 1

  1. Go to Start.
  2. Next, go to the Control Panel.
  3. Choose the Wireless Configuration Utility.
  4. Uncheck Let this tool manage your Wireless Networks.
  5. Click OK.

Method 2

  1. Go to Start and then go to Run.
  2. Enter msconfig.
  3. Disable your wireless card temporarily.
  4. Reboot.
  5. Enable Fast User Switching.
  6. Reboot.
  7. Go back to Start and then go to Run again.
  8. Enter msconfig.
  9. Enable your wireless card.
  10. Reboot.

Method 3

This solution is specifically for Dell users.

  1. Go to Dell Wireless WLAN Card Utility.
  2. Click on the Wireless Networks tab.
  3. Go to Edit and then to Options.
  4. Deselect or uncheck Authenticate prior to Windows domain logon under the Windows domain logon settings.

For Dell users who do not have an Edit button, you can try this variation to the method listed above.

  1. Go to Dell Wireless WLAN Card Utility.
  2. Click on the Wireless Networks tab.
  3. Go to Properties.
  4. Deselect Authenticate prior to Windows domain logon.

Method 4

Rename GinaDLL. This seems to be the easiest and quickest solution.

Method 5

This method requires you to edit your registry. Editing the registry carries inherent risks, so you should always create a backup of your registry before attempting any edits. Changes cannot be undone unless you have a backup file saved beforehand.

  1. Go to Start.
  2. Proceed to Run.
  3. Enter %SystemRoot%\system32\restore\rstrui.exe.
  4. Click OK.
  5. Click on the Welcome to System Restore page that you will see.
  6. Create a restore point.
  7. Click Next.
  8. Type a name for the restore point on the Create a Restore Point page.
  9. Click Create.
  10. Close after the restore point has been created.

Note that if System Restore is turned off, you will have to click Yes to confirm that you want to turn on System Restore.

  1. In the System Properties dialog box, clear Turn off System Restore check box.
  2. Click OK.

You can also visit Microsoft?s guide on backing up the registry for Windows Vista and Windows XP users.

  1. Go back to Start and then go to Run.
  2. Enter regedit.
  3. Go to HKEY_LOCAL_MACHINE \ SOFTWARE \ Microsoft \ Windows NT \ CurrentVersion \ Winlogon.
  4. Select the key and click on File and then Export. This will create a backup and provide the user with an extra safety net.
  5. Look at the right hand pane of the registry editor.
  6. Locate GinaDLL.
  7. Right click on GinaDLL and select Delete. The whole key must be deleted, not just the value data.
  8. Reboot your PC.

You should scan your registry at regular intervals with a recommended registry cleaner to lessen, if not, eliminate the incidence of registry related errors. A regular registry scan can also help find and fix existing errors, while also preventing the occurrence of errors in the future.