It is not recommended to disable the SpIDer Gate HTTP monitor because nowadays a lot of malware is distributed via infected websites. There are many script viruses and exploits that can cause harm to the system before they are saved to your hard drive and, consequently, detected by the SpIDer Guard® file monitor.
If disabling HTTP monitor is still necessary, right-click on the Dr.Web icon and in the next menu, select SpIDer Gate –> Disable. When anti-virus self-protection screen appears, type digits from the picture into the string and click Disable SpIDer Gate.