I recently upgraded my PRTG Network Monitor to v126.96.36.19910 (that fixes vulnerabilities related to the OpenSSL library).
Since then all my HTTP SSL Certificate Exipry sensors are not working anymore!
They show the Timeout (code: PE018) error message.
I checked my sensor setting and enforced the tls protocol but did not found any option to specify the timeout value.
As I invoke the sensor from the PRTG server itself with:
SSLCertExpiration.exe -tls -u=https://mysystem.mydomain.com
it works and return the number of days before certificate expiry.
Can someone help me solving that ?