Access may have been restricted due to a violation of the License to use Yandex Search Engine or because your computer is infected with a virus that results in an overload on Yandex services.
Be sure to check your computer for viruses. You can do this by using virus scanners such as CureIt! from Dr.Web or Kaspersky Lab. In addition to your regular anti-virus software, we recommend performing an additional scan using a third-party scanner, because all anti-virus applications use different virus databases. Free or trial versions of many virus scanners are available online .
If you access the internet via a shared Wi-Fi hotspot or a different type of connection that enables several computers to go online using a single IP address, scan all computers sharing the same IP for viruses.
If you are certain that the License conditions have not been violated and that the computers on your subnetwork are not infected, wait a bit.
Access to the service will become available automatically within 14 days. It is technically impossible to unblock access before this time.