While using vCloud in Linux systems, sometimes the following error is persistent. No matter how many times I logged in and out, it was there.
Error reading data from the main vCloud Director UI. Please close this window, verify that your session is still active, and try again.
To solve this,
1. Edit the /etc/sysctl.conf file
$ sudo nano /etc/sysctl.conf
2. Find the following line:
and change the value from 1 to 0.
Save the file and exit.
3. Run the following command
# sysctl –p
And you are good to go.