Hi,
Yes, the certificate on the MyNetworking Portal has been updated. This is where IMC verifies the software for LiveUpdate function. When this is updated, a new certificate is required for IMC server. The file is\iMC\common\jre\lib\security\cacert. We are working to release the new cacert file. Please open a support case and it will be provided.
As a workaround, the software can be manually downloaded then uploaded to the IMC software library.
thanks!
Aruba IMC ERT