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https://kb.vmware.com/s/article/2112741%3Flang%3Den_US
https://kb.vmware.com/s/article/2042650
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https://communities.vmware.com/thread/208888
https://kb.vmware.com/s/article/1020836
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https://www.vmware.com/support/vsphere5/doc/vsphere-vcenter-server-55u2b-release-notes.html
https://kb.vmware.com/s/article/1003949