We had a 4 minute window yesterday where our system monitoring tests were throwing 504 Request Timeout failures.
Analysis of the IIS logs on our 2 servers showed the following entries as being the last entries prior to the failures starting could this be a result of a report generation error or is something else going on.
This doesn’t look like a question about a single VT but about side-affects on a scanned system so i have moved this question to the closest fitting category.
It probably will be quite difficult to give specific advice for software of 3rdparty vendors. A generic advice is to:
check the logs of the affected system for any occurrences of errors which could help to understand why it this timeout appears
check for newer versions of the affected software which might be more resilient against a vulnerability scan
contact the vendor of the software asking for more help / support on how to harden the software against vulnerability scans (previously gathered logs could be forwarded to the vendor)
The log entries that I included in this post were the only entries that we found from the scan log I will search further upstream on our AUTH server to see if I can find anything in there.