"No data available" on performance tabs in Veeam Monitor

"No data available" is displayed on the performance metrics tabs in Veeam Monitor when the performance data didn’t come from vCenter server. However, if connecting directly to ESX(i) hosts, data is visible.

Veeam Monitor is unable to receive the data it is being sent from VMware vCenter server.

There are some errors visible in logs:
“Collecting thread will exit due to serious error (The operation was canceled)",
“Collecting thread will exit due to serious error (The underlying connection was closed: An unexpected error occurred on a send.)".

A hotfix is available to solve this particular issue and can be downloaded by the link below.
 
This hotfix is cumulative and compatible with Veeam Monitor version 5.0.0.261.
 
Make sure that you are running aforementioned version. You can verify this by going to “Options”  -> “Server Settings…” and noticing “Collector version” on “Collector” tab of “Veeam Monitor Server Settings” window.
 
Install the hotfix following instructions below:

1. Delete "Rtcounters" and "Histcounters" values from this registry key HKEY_LOCAL_MACHINE\SOFTWARE\VeeaM\Veeam Monitor for VMware\Service;
2. Stop the "Veeam Data Collector Service" service;
3. Overwrite all files in Veeam Monitor installation folder by the files from the hotfix archive. Make sure that you are using correct source folders (64bit folder for 64bit operating systems or 32bit folder for 32bit operating systems);
4. Once Step 3 is done then execute the SetPerHostCollectionMethod.reg file from archive and make sure that all changes have been applied successfully;
5. Start  the "Veeam Data Collector Service" service.

Once you have applied the hotfix then Veeam Monitor will spend some time gathering historical performance data from source VMware vCenter server or VMware host before you see the performance graphs updated.
 
To obtain the hotfix please follow the link below:
Download

If you have any questions or problems, please contact Veeam Support at http://www.veeam.com/support.html