check internet availability using VBA
i need to check the availability of a internet connection frequently and need to report it in excel sheet.
how can i implement this task using excel VBA? please help...
Anwsers to the Problem check internet availability using VBA
The following code will return True if there is an internet connection or False if there is no connection.
Private Declare Function InternetGetConnectedState _
Lib "wininet.dll" (ByRef dwflags As Long, _
ByVal dwReserved As Long) As Long
Private Const INTERNET_CONNECTION_MODEM As Long = &H1
Private Const INTERNET_CONNECTION_LAN As Long = &H2
Private Const INTERNET_CONNECTION_PROXY As Long = &H4
Private Const INTERNET_CONNECTION_OFFLINE As Long = &H20
Function IsInternetConnected() As Boolean
Dim L As Long
Dim R As Long
R = InternetGetConnectedState(L, 0&)
If R = 0 Then
IsInternetConnected = False
If R <= 4 Then
IsInternetConnected = True
IsInternetConnected = False
You would call this in your code with something like
If IsInternetConnected() = True Then
' no connected
For code and examples for using timer loops, see
This describes the OnTime procedure that you can use to repeatedly schedule code to execute.
- Access the files on your computer via MY COMPUTER
- Under the C: drive, access the WINDOWS folder
- Select the SOFTWARE DISTRIBUTION folder, followed by the DOWNLOAD folder.
- Delete any files within this download folder.
- If you are unable to delete these files, open the command prompt (CMD) as the administrator, and type "net stop wuauserv" into the CMD prompt window. Press ENTER. This should allow you to delete the files from step 4.
- Once the files are deleted, open and run the CMD as the administrator and type "wuauclt.exe /updatenow". Press ENTER.
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