kms client doesn't check the new kms host?

Earlier we had kms server for office and windows activation. After that, it was changed and made offline and another new windows 2008 server started to act as windows and office activation.

Most of the client machines (windows 7) could able to activate both windows and office with new kms host but some client machines always sending the activation request to old kms host for office activation alone and got failed.
These client machines sending the new kms host for windows activation perfectly.
I got really confused, the same client machine could send the activation request to new kms host for windows and old kms host for office activation??????

Can anyone help, why my client machines are not taking new kms host for office activation 2010?

Thanks
siva
thamarai_sivaAsked:
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jhyieslaCommented:
Check in your DNS table to make sure there is only one _VLMCS entry in the _tcp folder under your domain and that it points to the correct server.
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thamarai_sivaAuthor Commented:
Yes, I have already checked my DNS server and it has only my existing kms host entry.
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jhyieslaCommented:
Are you doing the Office installations yourself?  Are you sure someone isn't specifying a MAK license instead?  If everything is being done correctly, I'd try removing Office completely and reinstalling. If the KMS server is working, I don't think I've ever seen a client not get activated assuming the installation didn't specify a different license and assuming that the computer had access to the KMS server. I've seen it take awhile, but never fail or try to go to another host if the DNS table was right. You might also search the registry on the computer for the old KMS server name in case that's gotten hard coded in there somewhere.
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jhyieslaCommented:
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thamarai_sivaAuthor Commented:
Guys,

Followed the below steps to fix my issue.


cscript ospp.vbs  /sethst:kms.contoso.com  ----> Manually set KMS SERVER in client machines.
cscript ospp.vbs /act ------------- Activated Office activation
cscript ospp.vbs /remhst ------> Remove the manual setting in client machine about kms server to use DNS for future office activation.


Thanks
Siva
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thamarai_sivaAuthor Commented:
Basically all client machines will automatically find its KMS server either for office or OS activation or renewal.
Being some of our client machines fetched the old kms server, flushing dns and related stuffs didn't help us. So manual setting of kms server in client machine will remove the fetched old kms details.

Once client machines gets activated by using manual setting of kms server, removing those info will be required to make client machines become depend on DNS where it has all recent kms server details.
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