Do I need to apply for the license again after version upgrade

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After the version upgrade, determine whether to apply for the licenses again according to activated licenses of the source version and license support.
After the upgrade, run the display license command to check the activated licenses. The Product version field specifies the version number.
- In V200R001, the PBX function is licensed.
- In V200R002 and later versions, licensed functions include the voice service (SIP AG), data service, security service, CM&BEST, CT, and IVR.
After determining activated licenses, understand the license support. The licenses supported by the AR vary depending on the version.
Determine whether to apply for the licenses again according to activated licenses of the source version and license support.
- If the license has been activated in the source version and the functions required in the target version have been authorized by the activated license, you do not need to apply for a new license.
- If the license supported by the target version adds some functions and the functions are required, you must apply for the license. For example, when the AR is upgraded from V200R002C00SPC200 to V200R003C00, the license adds WLAN AC Express. To use this function, you need to apply for the license.

Other related questions:
Do I need to apply for a new license after a CE series switch is upgraded
After a CE series switch version is upgraded, the original license file is still valid and the functions supported by the license file are unchanged. To use the new licensed functions of the new version, you need to apply for a license for the new functions.

Does the license need to be loaded or activated again after an S serieS series switches restarts
For an S series (except the S1700) switch: - When the switch is powered off, restarted, or upgraded, you do not need to apply for, load, or activate the license again because the license status is automatically recovered. - After a license is loaded or activated, the switch does not need to be restarted.

Do I need to apply for a new license after the U1900 gateway is upgraded from C01 to C20?
After the U1900 gateway is upgraded, you do not need to apply for a new license.

Method used to apply for licenses again after cloud desktops are redeployed
After cloud desktops are redeployed, you need to apply for licenses again. To do so, contact Huawei technical support by calling the hotline.

Do I need to apply for a new license after reinstalling the operating system and software on the SMC2.0 server?
After reinstalling the operating system and software on the SMC2.0 server, you do not need to apply for a new license. You can import the old license. The procedure is as follows: 1. If the hardware is not changed, find the network adapter that is previously used and connect a network cable to the network adapter. 2. Log in to the SMC2.0 web interface. 3. Choose Help > License. 4. On the License page, verify that the license ESN is not changed and import the old license.

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