What is system uuid on windows and why cant it be easily changed











up vote
4
down vote

favorite












I was installing some software and it said that the locking criteria is the system UUID. Now I know what UUID stands for. I know they are unique and are 128 bits long. I know how to generate them from a windows power shell. But my question is what is the system UUID on a windows 7 machine. Where is it stored. And what is the purpose behind having a UUID for every computer? Could someone please clear these doubts for me? What are they used for apart from verifying that the same software is not installed again on the same computer?










share|improve this question






















  • Hm, there are multiple IDs here. First of all every Windows machine has a machine security identifier (SID) and if it is domain joined it gets a domain-sid as well. To change the first one the system must be rebooted with the sysprep tool, the second one changes when you register the machine in the domain. Both are not real UUIDs (but unique IDs). There is a hardware machine UUID (in fact I think multiple), there is the network card MACs, there are filesystem and disk IDs and many more..
    – eckes
    Jun 7 '17 at 19:56










  • The UUID in the mainboard is used I think for windows activation as well (wmic csproduct get UUID). Not beeing able to change them is to make spoofing harder, to reduce accidents and because some stuff depends on it. It is not clear which UUID is the one you care about. However if you are entitled to move the software then your vendor should tell you how, dont crack it.
    – eckes
    Jun 7 '17 at 19:56















up vote
4
down vote

favorite












I was installing some software and it said that the locking criteria is the system UUID. Now I know what UUID stands for. I know they are unique and are 128 bits long. I know how to generate them from a windows power shell. But my question is what is the system UUID on a windows 7 machine. Where is it stored. And what is the purpose behind having a UUID for every computer? Could someone please clear these doubts for me? What are they used for apart from verifying that the same software is not installed again on the same computer?










share|improve this question






















  • Hm, there are multiple IDs here. First of all every Windows machine has a machine security identifier (SID) and if it is domain joined it gets a domain-sid as well. To change the first one the system must be rebooted with the sysprep tool, the second one changes when you register the machine in the domain. Both are not real UUIDs (but unique IDs). There is a hardware machine UUID (in fact I think multiple), there is the network card MACs, there are filesystem and disk IDs and many more..
    – eckes
    Jun 7 '17 at 19:56










  • The UUID in the mainboard is used I think for windows activation as well (wmic csproduct get UUID). Not beeing able to change them is to make spoofing harder, to reduce accidents and because some stuff depends on it. It is not clear which UUID is the one you care about. However if you are entitled to move the software then your vendor should tell you how, dont crack it.
    – eckes
    Jun 7 '17 at 19:56













up vote
4
down vote

favorite









up vote
4
down vote

favorite











I was installing some software and it said that the locking criteria is the system UUID. Now I know what UUID stands for. I know they are unique and are 128 bits long. I know how to generate them from a windows power shell. But my question is what is the system UUID on a windows 7 machine. Where is it stored. And what is the purpose behind having a UUID for every computer? Could someone please clear these doubts for me? What are they used for apart from verifying that the same software is not installed again on the same computer?










share|improve this question













I was installing some software and it said that the locking criteria is the system UUID. Now I know what UUID stands for. I know they are unique and are 128 bits long. I know how to generate them from a windows power shell. But my question is what is the system UUID on a windows 7 machine. Where is it stored. And what is the purpose behind having a UUID for every computer? Could someone please clear these doubts for me? What are they used for apart from verifying that the same software is not installed again on the same computer?







windows-7 uuid






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Jul 28 '13 at 2:17









Sab

1701412




1701412












  • Hm, there are multiple IDs here. First of all every Windows machine has a machine security identifier (SID) and if it is domain joined it gets a domain-sid as well. To change the first one the system must be rebooted with the sysprep tool, the second one changes when you register the machine in the domain. Both are not real UUIDs (but unique IDs). There is a hardware machine UUID (in fact I think multiple), there is the network card MACs, there are filesystem and disk IDs and many more..
    – eckes
    Jun 7 '17 at 19:56










  • The UUID in the mainboard is used I think for windows activation as well (wmic csproduct get UUID). Not beeing able to change them is to make spoofing harder, to reduce accidents and because some stuff depends on it. It is not clear which UUID is the one you care about. However if you are entitled to move the software then your vendor should tell you how, dont crack it.
    – eckes
    Jun 7 '17 at 19:56


















  • Hm, there are multiple IDs here. First of all every Windows machine has a machine security identifier (SID) and if it is domain joined it gets a domain-sid as well. To change the first one the system must be rebooted with the sysprep tool, the second one changes when you register the machine in the domain. Both are not real UUIDs (but unique IDs). There is a hardware machine UUID (in fact I think multiple), there is the network card MACs, there are filesystem and disk IDs and many more..
    – eckes
    Jun 7 '17 at 19:56










  • The UUID in the mainboard is used I think for windows activation as well (wmic csproduct get UUID). Not beeing able to change them is to make spoofing harder, to reduce accidents and because some stuff depends on it. It is not clear which UUID is the one you care about. However if you are entitled to move the software then your vendor should tell you how, dont crack it.
    – eckes
    Jun 7 '17 at 19:56
















Hm, there are multiple IDs here. First of all every Windows machine has a machine security identifier (SID) and if it is domain joined it gets a domain-sid as well. To change the first one the system must be rebooted with the sysprep tool, the second one changes when you register the machine in the domain. Both are not real UUIDs (but unique IDs). There is a hardware machine UUID (in fact I think multiple), there is the network card MACs, there are filesystem and disk IDs and many more..
– eckes
Jun 7 '17 at 19:56




Hm, there are multiple IDs here. First of all every Windows machine has a machine security identifier (SID) and if it is domain joined it gets a domain-sid as well. To change the first one the system must be rebooted with the sysprep tool, the second one changes when you register the machine in the domain. Both are not real UUIDs (but unique IDs). There is a hardware machine UUID (in fact I think multiple), there is the network card MACs, there are filesystem and disk IDs and many more..
– eckes
Jun 7 '17 at 19:56












The UUID in the mainboard is used I think for windows activation as well (wmic csproduct get UUID). Not beeing able to change them is to make spoofing harder, to reduce accidents and because some stuff depends on it. It is not clear which UUID is the one you care about. However if you are entitled to move the software then your vendor should tell you how, dont crack it.
– eckes
Jun 7 '17 at 19:56




The UUID in the mainboard is used I think for windows activation as well (wmic csproduct get UUID). Not beeing able to change them is to make spoofing harder, to reduce accidents and because some stuff depends on it. It is not clear which UUID is the one you care about. However if you are entitled to move the software then your vendor should tell you how, dont crack it.
– eckes
Jun 7 '17 at 19:56















active

oldest

votes











Your Answer








StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "3"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});

function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});


}
});














draft saved

draft discarded


















StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fsuperuser.com%2fquestions%2f625055%2fwhat-is-system-uuid-on-windows-and-why-cant-it-be-easily-changed%23new-answer', 'question_page');
}
);

Post as a guest















Required, but never shown






























active

oldest

votes













active

oldest

votes









active

oldest

votes






active

oldest

votes
















draft saved

draft discarded




















































Thanks for contributing an answer to Super User!


  • Please be sure to answer the question. Provide details and share your research!

But avoid



  • Asking for help, clarification, or responding to other answers.

  • Making statements based on opinion; back them up with references or personal experience.


To learn more, see our tips on writing great answers.





Some of your past answers have not been well-received, and you're in danger of being blocked from answering.


Please pay close attention to the following guidance:


  • Please be sure to answer the question. Provide details and share your research!

But avoid



  • Asking for help, clarification, or responding to other answers.

  • Making statements based on opinion; back them up with references or personal experience.


To learn more, see our tips on writing great answers.




draft saved


draft discarded














StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fsuperuser.com%2fquestions%2f625055%2fwhat-is-system-uuid-on-windows-and-why-cant-it-be-easily-changed%23new-answer', 'question_page');
}
);

Post as a guest















Required, but never shown





















































Required, but never shown














Required, but never shown












Required, but never shown







Required, but never shown

































Required, but never shown














Required, but never shown












Required, but never shown







Required, but never shown







Popular posts from this blog

AnyDesk - Fatal Program Failure

How to calibrate 16:9 built-in touch-screen to a 4:3 resolution?

QoS: MAC-Priority for clients behind a repeater