What is system uuid on windows and why cant it be easily changed
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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
asked Jul 28 '13 at 2:17
Sab
1701412
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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?
windows-7 uuid
asked Jul 28 '13 at 2:17
Sab
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
add a comment |
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?
windows-7 uuid
asked Jul 28 '13 at 2:17
Sab
1701412
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
windows-7 uuid
asked Jul 28 '13 at 2:17
Sab
1701412
asked Jul 28 '13 at 2:17
Sab
1701412
asked Jul 28 '13 at 2:17
Sab
1701412
asked Jul 28 '13 at 2:17
Sab
1701412
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
add a comment |
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
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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