Domain Resolution
Verify that the server can resolve the virtualizor.com domain:
If the domain does not resolve, add Google's DNS server:
After updating the DNS configuration, try downloading the template again.
Root (/) Storage Full
If the root (/) filesystem does not have sufficient free space, the template download may fail.
Check the available disk space:
Example:
Filesystem Type Size Used Avail Use% Mounted on
/dev/sda3 ext4 144G 136G 742M 100% /
When this occurs, the task log may show the following error:
You do not have enough disk space to download the OS template

For KVM, OS templates and ISO files are downloaded to the following locations by default:
OS Templates : /var/virtualizor/kvm/
ISO Files : /var/virtualizor/iso/
Free up space on the root (/) filesystem and then retry the template download.
Slow Template Download Speed
Template download speed may vary depending on the network connectivity between your server and the selected mirror.
Virtualizor automatically checks the available mirrors and updates the mirror order based on latency when the cron runs.
Available mirrors range from s0.softaculous.com to s8.softaculous.com.
If you want to use a specific mirror, you can update the mirror settings in /usr/local/virtualizor/universal.php
Example:
"https:\/\/s3.softaculous.com\/a\/virtualizor","https:\/\/s4.softaculous.com\/a\/virtualizor","https:\/\/s2.softaculous.com\/a\/virtualizor",
"https:\/\/s7.softaculous.com\/a\/virtualizor","https:\/\/s5.softaculous.com\/a\/virtualizor","https:\/\/s0.softaculous.com\/a\/virtualizor"]';
You can check the latency to a mirror using:
Place the mirror with the lowest latency at the beginning of the list to prioritize downloads from that location and improve template download performance.