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Enterprise Secure Mobile Access - Virtual Appliance Upgrade to 12.x Fails
03/26/2020 
34 People found this article helpful
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Description
In the 12.0 release, the Linux kernel will no longer support the network adapter type that was used in our OVA definitions up through 11.3.0. This applies to both Enterprise Secure Mobile Access and Central Management Service virtual appliances hosted on VMware ESXi.
Resolution
The following Central Management Server migrations are known to have issues...
11.2.0 upgrading to 12.0.0 - UPGRADE FAILS
11.3.0 upgrading to 12.0.0 - UPGRADE FAILS
Note: 11.4.0 upgrading to 12.0.0 - Works as expected
The following Enterprise Secure Mobile Access migrations are known to have issues...
10.7.2 upgraded to 11.4.0 - upgrading to 12.0.0 - UPGRADE FAILS
11.2.0 upgraded to 11.4.0 - upgrading to 12.0.0 - UPGRADE FAILS
11.3.0 upgraded to 11.4.0 - upgrading to 12.0.0 - UPGRADE FAILS
11.3.0 upgrading to 12.0.0 - UPGRADE FAILS
10.7.2 upgrading to 12.0.0 - UPGRADE FAILS
11.2.0 upgrading to 12.0.0 - UPGRADE FAILS
Note: 11.4.0 upgrading to 12.0.0 - Works as expected
There are 2 workarounds to resolve this issue...
OPTION 1: Upgrade to 11.4 and delete both network adapters (after noting which networks they are attached to), add two NEW network adapters of the 'VMXNET3' variety. Then reboot the virtual machine and proceed with an upgrade to 12.0.0.
OPTION 2: Another approach to this that may be simpler is to export the configuration from the current virtual machine, deploy a new 12.0.0 virtual machine, and then import the config into the new machine.
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