All HTTP sensors seem to fail when checked an https URL with a self signed
certificate. The probes fail with PE105 No Response (-1) but when I change the
URL to point to another of our servers with a signed certificate then the
sensors work.
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Attention: This article is a record of a conversation with the Paessler support team. The information in this conversation is not updated to preserve the historical record. As a result, some of the information or recommendations in this conversation might be out of date.
Check IIS Configuration
This error is likely produced if the monitored website uses SSL and requires a client certificate.
Please check your IIS configuration as follows: In the Server Manager of the machine running your web server, in the Web Server (IIS)\Internet Information Services (IIS) Manager section, check the SSL Settings of the served website. Make sure the option Client certificates is set to Ignore.
PRTG's HTTP sensors do not have a client certificate build in, so the IIS just doesn't answer the requests if this option is set to either Accept or Require. This leads to the "no response" error.
May, 2011 - Permalink
Check IIS Configuration
This error is likely produced if the monitored website uses SSL and requires a client certificate.
Please check your IIS configuration as follows: In the Server Manager of the machine running your web server, in the Web Server (IIS)\Internet Information Services (IIS) Manager section, check the SSL Settings of the served website. Make sure the option Client certificates is set to Ignore.
PRTG's HTTP sensors do not have a client certificate build in, so the IIS just doesn't answer the requests if this option is set to either Accept or Require. This leads to the "no response" error.
May, 2011 - Permalink