Advisories issued to all departments to install security patch and upgrade the systems before using them.
Several hundred computers of various departments of the Gujarat government have been affected by ransomware cyber attack.
The IT services were halted or crashed in the department computers of the regional transport offices (RTO), several district collectors and police stations.
As a precaution, the government issued an alert to switch off computers and IT networks till anti-virus systems are installed.
According to IT secretary Dhananjay Dwivedi, 120 computers from across the States were affected. A few police stations and the Ahmedabad Civil Hospital were also affected.