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New Member

Cisco CUCM 9 license downgrade to 8


We have procurred CUCM 9 and its user connect license.

However we wish to install older CUCM version 8.6. Is there a way to downgrade / migrate license of CUCM 9 to 8.6 version?



Hall of Fame Super Silver

Re: Cisco CUCM 9 license downgrade to 8

You could try contacting, but I think your only option will be to RMA the licenses and procure desired version.
On a side note what is your reasoning with going with version 8.6?


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New Member

Pls open a case with Cisco

Pls open a case with Cisco licensing,they will take approval from the Cisco Product Manager, who  can still approved to downgrade the license as long as your server is still running on version 9.

 and provide them  PAK and the License Request from ELM so that they we can issue downgraded license the license for you.

Pls rate the feedback!!

Hello Andersson,

Hello Andersson,

Could you please give us your feedback on what did you do to install 8.x licenses as you bought 9.x ones ?

We have the same issue here. Our customer is running CUCM 8.x and he is not willing to upgrade to the last version. He just ordered addon licenses, however the addon licenses were ordered as 10.x

And an upgrade is not feasible since older licenses are not under coverage (at least in the moment I'm talking now).

Thank you in advance for your input.

Cisco Employee

Try contacting Cisco Global

Try contacting Cisco Global Licensing Team at and check if they can help you with providing the replacement license.

Do not forget to mention your Sales Order (SO) Number and PAK in the email to them along with your other necessary entitlement details.



Hall of Fame Super Silver

As stated in my original

As stated in my original response to the poster this needs to be addressed with . I have done it few times when customer decided to install newer version from what was delivered.  With that being said version 8 is EOS, so not sure if licensing team can still issue licenses for it.

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