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PowerShell Get Windows Update Issue

Posted on 2015-01-26
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Last Modified: 2015-01-26
The script that I have been using has been working perfectly up until today, not sure why it is no longer properly seeing the servers.txt file. Below is the script that I have been using to get Windows Updates on a list of servers in the text file and then porting it over to a csv file. Any suggestions on the error would be greatly appreciated.

Note: If I just specify the Server Name by itself it works just fine. Not sure why the GC command stopped working.

Script:

Get-HotFix -ComputerName (gc servers.txt) |Export-Csv .\WindowsPatches.csv

Error:

Get-HotFix : Cannot validate argument on parameter 'ComputerName'. The
argument is null or empty. Supply an argument that is not null or empty and
then try the command again.
At C:\scripts\Get-WindowsServerUpdates.ps1:1 char:26
+ Get-HotFix -ComputerName (gc servers.txt) |Export-Csv .\WindowsPatches.csv
+                          ~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidData: (:) [Get-HotFix], ParameterBindingV
   alidationException
    + FullyQualifiedErrorId : ParameterArgumentValidationError,Microsoft.Power
   Shell.Commands.GetHotFixCommand
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Comment
Question by:robertarenson
2 Comments
 
LVL 2

Accepted Solution

by:
Marc L earned 2000 total points
ID: 40571076
It looks like it is finding the server.txt file, as you are not getting a 'does not exist' error from the gc command.

Make sure there is no blank lines at the start of the servers.txt, or an illegal character. You could try copying the contents into another file.
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Author Closing Comment

by:robertarenson
ID: 40571739
Thanks, not sure what happen but sure enough it was just the simple txt file that was messing things up. Thanks again
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