Timer to skip/connect to next computer in for each loop while connecting remotely

I built a tool (with Visual Studio 2015 Express - Visual Basic) that will check the mcafee dat version and date from the registry on computers input either manually, in a text file, or selected from active directory. The tool works it successfully returned all the information for 714 out of 970 computers/laptops. The majority of the failures were either because they could not be resolved in DNS or weren't pingable and the tools identifies those and successfully logs them. It took a little over 15 minutes for the tool to retrieve the information and log it in a spreadsheet. The issue is that on 19 of the failures I got one of the two following errors and those 19 took the majority of the 15 minutes for the tool get and log all the information:

1. Attempted to perform an unauthorized operation
2. The network path was not found
   Is there a way of using a timer so that the program will attempt to connect to the registry at this point... rk1 = RegistryKey.OpenRemoteBaseKey(RegistryHive.LocalMachine, strComputer, RegistryView.Registry64) and then after a certain amount of time stop and move to the next computer in the for each loop? I have only been programming for a little over a year and I have learned exclusively through trial/error and google so please have patience with me as I am not a seasoned programmer.

The program works well my objective here is to improve it by making it skip to the next computer when it hangs for an extended period of time. I think it will cut the time in half. I have filtered out the computers that can't be resolved in DNS or aren't pingable. Here is the code:


For Each sel In picker.SelectedObjects
Try
If HostIsResolvable(sel.Name) Then
Try
reply = ping.Send(sel.Name, 1)
If reply.Status = IPStatus.Success Then
IPAddr = reply.Address.ToString()
Try
comsys(sel.Name)
Dim rk1 As RegistryKey
Dim rk2 As RegistryKey
rk1 = RegistryKey.OpenRemoteBaseKey(RegistryHive.LocalMachine,
sel.Name, RegistryView.Registry64)
rk2 = rk1.OpenSubKey("SOFTWARE\Wow6432Node\McAfee\AVEngine")
mAV = rk2.GetValue("AVDatVersion").ToString
mAD = rk2.GetValue("AVDatDate").ToString
objExcel.Cells(y, 1) = sel.Name
objExcel.Cells(y, 2) = IPAddr
objExcel.Cells(y, 3) = commodel
objExcel.Cells(y, 4) = comuser
objExcel.Cells(y, 5) = "DAT Version Number: " & mAV
objExcel.Cells(y, 6) = "DAT Date: " & mAD
y = y + 1
Catch ex As Exception
Messagebox.show(ex.message)
End Try
Else
Messagebox.show(sel.Name & " is not pingable!")
End If

Catch ex As Exception
Messagebox.show(ex.message)
End Try
Else
Messagebox.show(sel.Name & " could not be resolved in DNS!")
End If
Catch ex As Exception
Messagebox.show(ex.message)
End Try
sel = Nothing
Next

Thread moved from the CodeBank, which is for posting finished code rather than posting questions.

This wasn't finished code. I was asking for help with changing a part of the for each.

Exactly. The CodeBank is for finished examples. Questions belong in this forum.