看了一下更新日志。瑞星的这次更新包括主引擎更新。更新后，要重启系统。
重启后，任务栏中的小伞就变红了。打开“监控中心”——一片空白！
应该是注册表中的服务RavMon出了问题。
我的系统是XP，系统及瑞星均在C盘。将下列内容粘贴到记事本窗口，保存为RavMon.reg：
REGEDIT4
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\RsRavMon]
"Type"=dword:00000010
"Start"=dword:00000002
"ErrorControl"=dword:00000001
"ImagePath"=hex(2):22,43,3a,5c,50,72,6f,67,72,61,6d,20,46,69,6c,65,73,5c,52,69,73,\
69,6e,67,5c,52,61,76,5c,52,61,76,6d,6f,6e,64,2e,65,78,65,22,00
"DisplayName"="RsRavMon Service"
"Group"="TDI"
"DependOnService"=hex(7):52,73,43,43,65,6e,74,65,72,00,00
"DependOnGroup"=hex(7):00
"
ObjectName"="LocalSystem"
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\RsRavMon\Security]
"Security"=hex:01,00,14,80,90,00,00,00,9c,00,00,00,14,00,00,00,30,00,00,00,02,\
00,1c,00,01,00,00,00,02,80,14,00,ff,01,0f,00,01,01,00,00,00,00,\
00,01,00,00,00,00,02,00,60,00,04,00,00,00,00,00,14,00,fd,01,02,\
00,01,01,00,00,00,00,00,05,12,00,00,00,00,00,18,00,ff,01,0f,00,\
01,02,00,00,00,00,00,05,20,00,00,00,20,02,00,00,00,00,14,00,8d,\
01,02,00,01,01,00,00,00,00,00,05,0b,00,00,00,00,00,18,00,fd,01,\
02,00,01,02,00,00,00,00,00,05,20,00,00,00,23,02,00,00,01,01,00,\
00,00,00,00,05,12,00,00,00,01,01,00,00,00,00,00,05,12,00,00,00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\RsRavMon\Enum]
"0"="Root\\LEGACY_RSRAVMON\\0000"
"Count"=dword:00000001
"NextInstance"=dword:00000001
双击RavMon.reg，将其导入注册表。重启系统，瑞星监控恢复正常。瑞星的其它功能也正常。
