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  #21  
Old 06-03-2007, 05:39 PM
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Too keep the answer in a simply form. Run a check to see who many jumps are between you (your computer) and the Server at MS (and there are many).
If there is just one hiccup or belch along the way... you have a corrupt DL and that means a corrupt expand and install... I use NeoTrace Pro. to test my jumps..

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  #22  
Old 06-03-2007, 07:59 PM
jemw
 
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Quote:
Originally Posted by Snuffy
Too keep the answer in a simply form. Run a check to see who many jumps are between you (your computer) and the Server at MS (and there are many).
If there is just one hiccup or belch along the way... you have a corrupt DL and that means a corrupt expand and install... I use NeoTrace Pro. to test my jumps..
Snuffy: I understand the concept of a dropped byte. What I have trouble with is the absence of self check of the package at install time.
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  #23  
Old 06-03-2007, 08:03 PM
jemw
 
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Quote:
Originally Posted by Snuffy
Too keep the answer in a simply form. Run a check to see who many jumps are between you (your computer) and the Server at MS (and there are many).
If there is just one hiccup or belch along the way... you have a corrupt DL and that means a corrupt expand and install... I use NeoTrace Pro. to test my jumps..
PS: tcp is suppose to check the packet at the receive end and request a new one if it is corrupt. Otherwise we would never be able to do business over the internet.
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  #24  
Old 06-03-2007, 09:08 PM
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Quote:
PS: tcp is suppose to check the packet at the receive end and request a new one if it is corrupt. Otherwise we would never be able to do business over the internet.
You used the word "SUPPOSE" and not every body has installed CRC checkers, and repair files in there DL's... Have you ever wondered why 99% of all P2P files have
(1.) repair inserted in there files.
(2.) they have par or par2 files if you need.
(3.) Programs like "DIVX Fix" are FREE. etc, etc.
(4.) Over 90% of all Servers allow you to resume, and or restart download,
and allow the use of Download Managers, (which are CRC checks).

IMHO the Internet has came a long ways... but it is lacking in many areas.
and CHEAP prices mean they have to "shortcut" someone somewhere, Quality is a price you pay, quanity is what you get. (compare Cadillac to Cheyrolet - Quality vis Quanity) (Lincoln to Ford - Quality vis Quanity).
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  #25  
Old 06-03-2007, 10:41 PM
jemw
 
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Snuffy: I wasn't referring to the application in this statement. I was referring to the CRC that is part of the header in a tcp packet.
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  #26  
Old 06-04-2007, 12:42 AM
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Snuffy: I wasn't referring to the application in this statement. I was referring to the CRC that is part of the header in a tcp packet.

that part is CRAP, if it was true and worked then all the extra files and methods to insure a good DL would be wasted and null, and save millions of dollars and millions of hours of RE-download. Sounds GOOD in theory but is "hokey puck" in the real world. I have hope that IPv6 will be
an improvement over IPv4. I have had many less corruptions (complaints) from a corrupt TCP in Vista than any other OS so far ... and corrupt TCP has been a major problem with the internet since Windows.
http://computer.howstuffworks.com/question525.htm
Quote:
trailer - The trailer, sometimes called the footer, typically contains a couple of bits that tell the receiving device that it has reached the end of the packet. It may also have some type of error checking. The most common error checking used in packets is Cyclic Redundancy Check (CRC). CRC is pretty neat. Here is how it works in certain computer networks: It takes the sum of all the 1s in the payload and adds them together. The result is stored as a hexadecimal value in the trailer. The receiving device adds up the 1s in the payload and compares the result to the value stored in the trailer. If the values match, the packet is good. But if the values do not match, the receiving device sends a request to the originating device to resend the packet.
The question to CRC is how many times will it ask? before you get a CRC error. -- snip--
There are plenty of technical resources on the Web that discuss cyclic redundancy checks (CRCs). Most times you won't need to worry about this technobabble. That is, until one it day it suddenly appears and you think - what the hell does that mean? In simple terms, a CRC is bit of mathematics used to ensure that your data is OK when being transfered. It's a checking procedure that quickly identifies when data has been damaged. If you get this message, it means that the file being read by your PC or software is corrupted. However, it does not mean all the data is lost forever. When data is transfered, it is usually in small blocks and each block is given a CRC value. If something goes wrong with the data between the time it leaves the source and arrives at its destination, the CRC sent at the source will no longer match the one that is calculated when the data arrives - this is when the cyclic redundancy check error will appear. --snip--
Less frequent causes are the result of system crashes, and buggy software (hello Microsoft), incomplete downloads (often identified by the misleading message 'This is not a valid Windows file', 'This is not a valid win32 application' or 'Corrupt Zip file'). If this problem happens frequently with downloads, try using a download manager like "a download manager". --snip--
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  #27  
Old 06-04-2007, 09:20 AM
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Snuffy, I believe jemw is asking for clarification on how a corrupt installer completes.

The reason is that the data is either slightly damaged or Vista expands it incorrectly. It can be for so many resons as nothing is infallible.

Either way, I agree a re-install should resolve the problem.

crabby
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  #28  
Old 06-04-2007, 04:27 PM
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Thanks for the explanation. I really do not know what or why, but during Beta testing of Windows 95 - Vista. The answer was REMOVE and REINSTALL, if you think you have a corrupt install... I beleive it is due to (I can not find) a simply check on MSI installer that says (Keep all broken files & append to like or same). This has been a problem noted during every beta test since Win 95.
PS: As you know Windows keep many tmp files which are compressed.

Every compression program I know of has the same somewhere..
1. Keep all broken files
2. Append to
This allows you to resume the download ... if the server supports resume.
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