Solution for iis cpu usage of 100%

Symptoms:

When the machine is debugging or allows IIS, the service is interrupted due to exceptions (such as power failure), and when the IIS runs the page again, the CPU resource usage is 100%. It is invalid even if it is restarted.

Cause analysis:

When an interruption occurs, IIS will write exception logs, but garbled characters are written at this time, which leads to an endless loop of logs written by IIS and depletion of system resources. Find the error log file of the current day under the system path \ system32 \ logfiles \ w3svc1, and you will see the above content.

Solution:

Delete the error log file of the day under the system path \ system32 \ logfiles \ w3svc1, for example, ex0602.16.log, and restart IIS.