JohnOne

about WMI

9 posts in this topic

I've read a while back that some people try not to use WMI in their scripts because some computers don't have it or have to run it manually.

Is that a relic from the win9x FAT OS's?

Would it be safe to assume that all post XP machines have WMI capabilities?


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#2 ·  Posted (edited)

Sometimes WMI is not started.

Just use this Code to restart WMI:

$oWMI = ObjGet("winmgmts:\\" & @ComputerName & "\root\CIMV2")
        If @error Then
            RunWait(@ComSpec & ' /c net start winmgmt  ', '', @SW_HIDE)
            RunWait(@ComSpec & ' /c net continue winmgmt  ', '', @SW_HIDE)
            $oWMI = ObjGet("winmgmts:\\" & @ComputerName & "\root\CIMV2")
        EndIf

like I have done it in my _SingleScript() UDF.

Edited by Exit
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I remember that some time ago (maybe two years ago) I had a problem on Win7 such that WMI did not work and then I had to repair Windows.
I did not know about it:

 

$oWMI = ObjGet("winmgmts:\\" & @ComputerName & "\root\CIMV2")
        If @error Then
            RunWait(@ComSpec & ' /c net start winmgmt  ', '', @SW_HIDE)
            RunWait(@ComSpec & ' /c net continue winmgmt  ', '', @SW_HIDE)
            $oWMI = ObjGet("winmgmts:\\" & @ComputerName & "\root\CIMV2")
        EndIf

So I can not say if it was the same case.

But thanks @Exit it should be useful.

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#4 ·  Posted (edited)

That service is also intentionally disabled by many STIGs, with no rights available to a script to turn it on. I think the latest Gold Disc even contains the powershell package, the feature is just not enabled and installed by default.  But (when dealing with hardened envrionments) I would assume neither were available and aim for the registry, or  offline package install and reimage.

 

Edited by boththose
awful grammar
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,-. .--. ________ .-. .-. ,---. ,-. .-. .-. .-.
|(| / /\ \ |\ /| |__ __||| | | || .-' | |/ / \ \_/ )/
(_) / /__\ \ |(\ / | )| | | `-' | | `-. | | / __ \ (_)
| | | __ | (_)\/ | (_) | | .-. | | .-' | | \ |__| ) (
| | | | |)| | \ / | | | | | |)| | `--. | |) \ | |
`-' |_| (_) | |\/| | `-' /( (_)/( __.' |((_)-' /(_|
'-' '-' (__) (__) (_) (__)

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I encountered what boththose is referencing in a hospital client a year or so ago. Had a script that relied heavily on WMI but was something they'd turned off through their hardening process. I think it is still an exception to the rule, however, as I see it enabled in 99% of the places I work.

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√-1 2^3 ∑ π, and it was delicious!

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For my part, I met 3 or 4 problems with WMI and Windows XP.

Each time, I solved it by rebuilding the WMI repository. Here is a good article : http://blogs.technet.com/b/askperf/archive/2009/04/13/wmi-rebuilding-the-wmi-repository.aspx

 

 

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As I remember I read it before (2 years ago).
This is nice refresh of knowledge.

mLipok

 

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Last update: 2017-03-27
Any of my own code posted anywhere on the forum is available for use by others without any restriction of any kind. 

My contribution (my own projects): * Debenu Quick PDF Library - UDF * Debenu PDF Viewer SDK - UDF * Acrobat Reader - ActiveX Viewer * UDF for PDFCreator v1.x.x * XZip - UDF * AppCompatFlags UDF * CrowdinAPI UDF * _WinMergeCompare2Files() * _JavaExceptionAdd() * _IsBeta() * Writing DPI Awareness App - workaround * _AutoIt_RequiredVersion() * Chilkatsoft.au3 UDF * TeamViewer.au3 UDF * JavaManagement UDF * VIES over SOAPPOP3.au3 UDF *  RTF Printer - UDF * XML.au3 - BETA * ADO.au3 UDF SMTP Mailer UDF * WinSCP UDF *

My contribution to others projects: * _sql.au3 UDF  *

Useful links: * Forum Rules * Forum etiquette *  Forum Information and FAQs * How to post code on the forum * AutoIt Online Documentation * AutoIt Online Beta Documentation * SciTE4AutoIt3 getting started * Convert text blocks to AutoIt code * Games made in Autoit * Programming related sites * Polish AutoIt Tutorial * DllCall Code Generator * 

Wiki: Expand your knowledge - AutoIt Wiki * Collection of User Defined Functions * How to use HelpFile * Best coding practices * 

IE Related:  * How to use IE.au3  UDF with  AutoIt v3.3.14.x * Why isn't Autoit able to click a Javascript Dialog? * Clicking javascript button with no ID * IE document >> save as MHT file * IETab Switcher (by LarsJ ) * HTML Entities *

I encourage you to read: * Global Vars * Best Coding Practices * Please explain code used in Help file for several File functions * OOP-like approach in AutoIt * UDF-Spec Questions *  EXAMPLE: How To Catch ConsoleWrite() output to a file or to CMD *

"Homo sum; humani nil a me alienum puto" - Publius Terentius Afer
"Program are meant to be read by humans and only incidentally for computers and execute" - Donald Knuth, "The Art of Computer Programming"
:naughty:  :ranting:, be  :) and       \\//_.

Anticipating Errors :  "Any program that accepts data from a user must include code to validate that data before sending it to the data store. You cannot rely on the data store, ...., or even your programming language to notify you of problems. You must check every byte entered by your users, making sure that data is the correct type for its field and that required fields are not empty."

 

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So I will demote my assumption to

...unless deliberately disabled, or dubiously defunct; it will be there.

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,-. .--. ________ .-. .-. ,---. ,-. .-. .-. .-.
|(| / /\ \ |\ /| |__ __||| | | || .-' | |/ / \ \_/ )/
(_) / /__\ \ |(\ / | )| | | `-' | | `-. | | / __ \ (_)
| | | __ | (_)\/ | (_) | | .-. | | .-' | | \ |__| ) (
| | | | |)| | \ / | | | | | |)| | `--. | |) \ | |
`-' |_| (_) | |\/| | `-' /( (_)/( __.' |((_)-' /(_|
'-' '-' (__) (__) (_) (__)

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