Hello @wolfgang_hafelinger
Unfortunately I can’t be much more helpful than this conclusion you made:
Rather, I start to believe it may due to proxy availability (authorized to proxy) and or VPN availability or not.
It looks like due to some problem related to SSL configuration, we can’t decrypt the JSON we expect to get from the SonarQube Server/Cloud you connected to. And that’s why there’s a message about malformed JSON. It looks like it’s just a decryption error we trying to parse as JSON. Maybe we can improve the logging here. So since synchronization with server is not finished we can’t perform the analysis. That’s why you see this message:
Analysis skipped as the engine is not ready yet
So root cause it SSL configuration.
Just making sure you seen this page:
Normally, if you use traffic encryption - SonarQube for IDE should be able to pick up operating system settings and JVM configuration for IntelliJ. So if your IntelliJ is able to connect to the internet (for example open Marketplace, download and install plugins), then SonarQube for IDE should work alright as well. Assuming you don’t have some advanced config that makes situation a bit more complex.
So first step to troubleshoot would be to test if IntelliJ works fine with network. And if not - try to find misconfigured stuff like certificates and proxy settings.
If IntelliJ network related features works alright while SonarQube IDE doesn’t I would suspect you have some advanced settings enabled that makes SonarQube IDE using different JVM than IntelliJ itself.
Sorry for the late response.
Best,
Hi Kirill,
as suggested, a better logging would be helpful here, i.e. what are you doing when getting malformed JSON?
IntelliJ appears to work fine. However, there are proxy settings requiring to log in again and so so. There are also VPNs and tools like Zscaler around that may or may not have an impact.
So let’s close this ticket and think about improving the logging.
Thx and all the best
Dear All,
the issue is back! It was gone for a long while but now, as I updated IntelliJ to latest version
IntelliJ IDEA 2025.1.3 (Ultimate Edition)
Build #IU-251.26927.53, built on June 23, 2025
Source revision: a5abecbe752fe
Licensed to Daimler TSS GmbH / Wolfgang Haefelinger
Subscription is active until December 31, 2025.
Runtime version: 21.0.7+9-b895.130 amd64 (JCEF 122.1.9)
VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o.
Toolkit: sun.awt.windows.WToolkit
Windows 10.0
Kotlin plugin: K2 mode
GC: G1 Young Generation, G1 Concurrent GC, G1 Old Generation
Memory: 8000M
Cores: 12
Registry:
debugger.new.tool.window.layout=true
documentation.show.toolbar=true
ide.experimental.ui=true
ide.ui.new.file.chooser=true
jvm.dfa.analysis.ui.security.analysis.window.was.shown=true
Non-Bundled Plugins:
com.intellij.ideolog (251.26927.70)
org.jetbrains.completion.full.line (251.26927.53.2)
dev.meanmail.plugin.nginx-intellij-plugin (2025.13.1)
name.kropp.intellij.makefile (251.25410.28)
com.haulmont.jpab (251.26927.53)
org.jetbrains.plugins.gitlab (251.26927.54-IU)
org.sonarlint.idea (10.26.0.81619)
com.dmarcotte.handlebars (251.23774.318)
Kotlin: 251.26927.53-IJ
and also update Sonar the issue is back again 
Hey @wolfgang_hafelinger, may you give a bit more information about the issue being back? Could you please share the logs?
If this is related to Analysis skipped as the engine is not ready yet, you might see an improvement in the upcoming release from this week. We fixed an issue where this could happen in some specific project configurations (when having the same project opened twice, or if the project/modules have similar names).
We just released SonarQube for IntelliJ version 10.27, could you please update and see if you still notice any issues?
Thank you!
Hey Nicolas,
just installed latest version. I’m also on the very latest IntelliJ:
So far it doesn’t look good. Analysing the project took a very long time (about 10m) but it never showed any reports / issues whatsoever.
I saw something strange: Sonar plugin logged a warning that a *.java is not a Kubernetes file. Perhaps not important but rather strange.
Restarting IntelliJ and restarting Windows did not solve the issue.
What I want to now is to de-install your plugin, remove any garbage from previous installations and re-install plugin again.
Now, after 22m it looks like as if the plugin is stalled.
Re-installing tomorrow.
The issue not being a Kubernetes file ..
Analysing current file stopped and this is the log ..
The result of current file analysis → I see nothing.
I see this exception on running analysis on current file ..
Frustration level is increased.
Could you please provide the full logs with verbose output enabled? Ideally, include logs from the start of SonarQube for IDE as well as from when an analysis is triggered.
Please note that the CancellationException errors you’re seeing are expected and not indicative of a problem—they’re just noisy logs and will be addressed in a future update. Similarly, the info-level log about the file not being a Kubernetes file can safely be ignored.
What we’re most concerned about is the MalformedInputException you encountered.
We want to assure you that we’re actively investigating this issue. SonarQube for IDE is designed to work seamlessly across most development environments, and we’re committed to ensuring it performs reliably for you. We appreciate your help in troubleshooting this.
How do I enable full/verbose logs? Docu doesn’t help me. Can you share a screenshot where I can see the flag?
When you are in the log tab, you can right click on the tab and select both Analysis logs and Verbose output, as shown here:
Coming back to the MalformedInputException, it seems that there might be an encoding issue happening at some point, or some problems with your network.
Furthermore, is the issue happening on a specific file or folder? If you have a small reproducer that would be very useful for us.
