Get correct checksum for VLSC downloaded ISO

I guess should be a pretty basic task but I can't figure out how I should go about obtaining a checksum (preferably SHA1) for Microsoft VLSC iso media. My question is not about computing it but finding out what it should be in the first place.

In my specific case I am looking  for Windows 7 Enterprise 64 bit English 64 bit (2976 Mb iso) but the question is generic.

Thanks for you help
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Alexandre TakacsCTOAsked:
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n2fcCommented:
You can also use the "Download Manager"
https://support.microsoft.com/en-us/kb/2472143

... which will verify the download automatically upon completion!
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KimputerCommented:
I suspect there's no table or database with this information. If you don't trust your download, download the file again from the official source (MS VLSC). I have a feeling that's MS's own motto too. Maybe use the Download Manager download option also, instead of the normal browser download.
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n2fcCommented:
1) To calculate checksums on files you have:
I prefer HashCheck... Freeware... Get it here:
http://code.kliu.org/hashcheck/

2) To verify against MS originals, logon to your MS account (where you downloaded the original)...  They always post the original checksums for verification purposes...
http://technet.microsoft.com/en-us/subscriptions/downloads/default.aspx

3) You can also ask in the MS support forum:
https://social.technet.microsoft.com/Forums/en-US/home

You'll find the checksums on this Technet-Site under the Option "Operating-Systems->Windows 7". Under the option "Details" you'll find the checksum.

http://technet.microsoft.com/en-us/subscriptions/downloads/default.aspx
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Alexandre TakacsCTOAuthor Commented:
Hi -  thanks I know about Technet but the ISO in VLSC are - to my knowledge - different.

My question is and remains how do I get VLSC media checksums

VLSC screenshot
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n2fcCommented:
As a sample, the following is copied from the MS Technet site:

============
This media refresh includes the installation hotfix described in KB Article 2534111. No other changes have been made to the product.
File Name: en_windows_7_enterprise_with_sp1_x64_dvd_u_677651.iso (3035MB)
Languages: English
SHA1: A491F985DCCFB5863F31B728DDDBEDB2FF4DF8D1

File Name: en_windows_7_enterprise_x64_dvd_x15-70749.iso (2977MB)
Languages: English
SHA1: A89DCE706D527206CB464EF86ACD3A3D13A332DB
=======================

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All other iso's are similarly listed there!
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Alexandre TakacsCTOAuthor Commented:
Well there is the security consideration (and in this day and age it seems that paranoia is well warranted) but I sometimes get corrupted downloads - just got a bogus Server 2012R2 iso a few days ago...
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Alexandre TakacsCTOAuthor Commented:
Are you guys 100% definite that TechNet and VLSC are the same media ? In all cases ?
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n2fcCommented:
Did you click on the "description" link for the download?

That is where that info is available!
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Alexandre TakacsCTOAuthor Commented:
Well if I click said link for Windows 7 I get:

Version7
Release Date8/6/2009
Product DescriptionWindows 7 Enterprise will help make users productive anywhere, enhance security and control, and streamline PC management.
System RequirementsNone Provided.

No checksum...
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KimputerCommented:
Technet and VLSC are NOT the same. That's why I asked you to use the Download Manager instead of browswer download when downloading the ISO.
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Alexandre TakacsCTOAuthor Commented:
>  ... which will verify the download automatically upon completion!

Will give it a try but still doesn't give me a checksum to match against... ?!
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KimputerCommented:
The  download manager will verify it, sadly you don't have the checsum indeed, except to generate it yourself if you trust the download manager has verified it correctly (which makes the point moot, chicken/egg).
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Alexandre TakacsCTOAuthor Commented:
Thanks - will make sure to use the download manager but I'm really surprised that MS does not give you the option to check your iso against a published checksum...
Not to mention that I can't either check the DM validity (although it is signed, already a good start).
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Alexandre TakacsCTOAuthor Commented:
Well that closest response to a real solution... Not exactly what I was looking for but the best we can do
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