I have been going through the Application Insights for two different websites we run and noticed several thousands errors recorded all with commonalities.
The error is caused when POST is made to webanalytics/LogHit and returns 403, this is only happening when request is coming from
IP Address: 188.8.131.52
Registration Date: 05/03/04
Org: Google LLC
Org Handle: GOGL
Address: 1600 Amphitheatre Parkway
City: Mountain View
Postal Code: 94043
Country: United States
This is suggesting that this request is made by the web crawler and the following IIS error is triggered:
IIS Detailed Error - 403.0 - Forbidden
HTTP Error 403.0 - Forbidden
You do not have permission to view this directory or page.
Most likely causes:
This is a generic 403 error and means the authenticated user is not authorized to view the page.
Things you can try:
Create a tracing rule to track failed requests for this HTTP status code. For more information about creating a tracing rule for failed requests, click http://go.microsoft.com/fwlink/?LinkID=66439 here.
Detailed Error Information:
Error Code 0x00000000
Requested URL https://my-kentico-app__f394:80/cmsapi/webanalytics/LogHit
Physical Path D:\home\site\wwwroot\cmsapi\webanalytics\LogHit
Logon Method Anonymous
Logon User Anonymous
This generic 403 error means that the authenticated user is not authorized to use the requested resource. A substatus code in the IIS log files should indicate the reason for the 403 error. If a substatus code does not exist, use the steps above to gather more information about the source of the error.
Both applications are running as WebApp in Azure and there are separate Kentico 10 instances.
One very noticeable issue is the request url "my-kentico-app__f394" this is going from who know's where from as nowhere in our system is such url declared "my-kentico-app" is the only valid and working url.
This looks internal Kentico issue to me, does anyone experiencing same errors in the Application Insights as well?