My personal opinion on Windows 10 The default login background image is quite unaccustomed，Maybe it’s a bit tired after watching for a long time，Previously, there was a way to modify the web crawler，But no relevant teaching was found。Search for foreign articles today，Finally found some information。
recently put vSphere 5.5 Update to 7.0，Many articles have been published before，This is a sorting，This will be a bit clearer for the entire upgrade process，The entire upgrade procedure is as follows：
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Version before vCSA upgrade：6.5 U3f 15259038
Version after vCSA upgrade：7.0 U1d 17491101
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If it appears when logging in to the ESXi host “Permission to perform this operation was denied”，And login to vCSA is no problem，Then it may be caused by the ``locked mode'' enabled in vCenter Server。
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After newly installed vCSA 7.0U2，The main screen appears “Insufficient set resources，Unable to meet the required failover on the cluster (HA) Level” Error message，Try to adjust the proportion of reserved resources in the "Admission Control" of HA，But can't make the message disappear。Internet crawl text after，It turned out to be only caused by the rigor of the concept and HA mechanism。
After updating vCenter today，Status will pop up on the Update Manager page 404 錯誤，Many options are also abnormal：
vCenter version：6.5 U3f 15259038
ESXi pre-upgrade version：6.0 U2
ESXi upgraded version：6.5 U2
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i：Start editing at the cursor position。
the：Start editing under the cursor。
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Version before vCSA upgrade：6.0 U3i 13638623
Version after vCSA upgrade：6.5 U3f 15259038
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Anson | 
05 6th, 2021| 