CubeMx Network configuration Issue

[Shirisha Manchi]

Hello everyone,

I am experiencing an issue with STM32CubeMX version 6.18.0 right after a fresh installation. The software is unable to connect to the server to download repositories or updates.

Here are the details of my situation:

• Network Environment: I am using my office Wi-Fi, which does not use a proxy server. Other applications connect to the internet without issues.
• Error Message: I keep getting a "Problem during server connection" error.
• Troubleshooting Done: I have already gone into the Connection Settings and tried changing the proxy settings to "No Proxy" as well as "System Proxy", but neither option resolved the issue.

Since there is no proxy on our network, I am unsure what is blocking STM32CubeMX from reaching the server. Has anyone encountered this with version 6.18.0, or does anyone know which specific ports or URLs need to be whitelisted in our office firewall?

Any help or guidance would be greatly appreciated. Thank you!

[Ghofrane GSOURI]

Hello ​@Shirisha Manchi 

Are you facing this issue Workaround for file download error: crdb.zip (Problem during download) | Community?

If yes , this issue has been fixed in  the latest version of STM32CubeMX6.18.1

Download STM32CubeMX 6.18.1  from here 

Or update your current installation of STM32CubeMX using: Help > Check for Updates 

THX

Ghofrane

 

[Shirisha Manchi]

Hi Ghofrane,

Thank you for the quick follow-up.
In my case, the application cannot establish a backend internet link at all.
When I open the connection configuration and click "Check Connection", it results in a hard "Problem during Server Connection" failure immediately. This blocks me completely from fetching firmware packages.

[Ghofrane GSOURI]

Hello ​@Shirisha Manchi 
A quick and reliable way to confirm the root cause is to run STM32CubeMX while connected to a mobile hotspot instead of the office network: if the connection check succeeds and firmware downloads work normally in that setup, it strongly indicates that the issue is not with CubeMX itself or the PC, but with the corporate network path  most likely a firewall rule blocking access to the required ST online services.

THX

Ghofrane

[Shirisha Manchi]

Hi Ghofrane,

Thank you for the suggestion.

I just tested using my mobile hotspot completely disconnected from the office network, and the result is exactly the same: no connection gets established, and the cross remains over the network icon.

[Ghofrane GSOURI]

Hello ​@Shirisha Manchi 

Let’s try a full clean reinstall of STM32CubeMX: first uninstall the application, then reinstall it using a fresh installer.

Then launch STM32CubeMX from a Command Prompt opened in the installation directory using the following command:

jre\bin\java -Djavax.net.ssl.trustStoreType=WINDOWS-ROOT -jar STM32CubeMX.exe

Then test the connection again from inside CubeMX. If the issue still persists after the reinstall, please send me the full command-line output by simply copying and pasting everything displayed in the Command Prompt window. This will help me investigate the issue further.

THX

Ghofrane

[Hamza King]

I’ve run into similar CubeMX connection issues, and in my experience it’s not always the proxy setting itself. Office firewalls or SSL inspection can sometimes block the connection even when normal internet access works fine.

I’d first check whether CubeMX is being blocked by the firewall/endpoint security and whether HTTPS traffic to ST’s repository/update servers is allowed. Also worth checking the CubeMX log files—they usually give a more specific connection error than the popup.

If it works on a mobile hotspot, that’s a good quick way to confirm the office network is the culprit.

[Shirisha Manchi]

Hello ​@Ghofrane GSOURI 

Still, it is not working and here is the command-line output


log4j user configuration file not found: C:\Users\Shirisha Manchi/.stm32cubemx/log4j2.xml
Configure log4j with default settings from jar:file:/C:/Program%20Files/STMicroelectronics/STM32Cube/STM32CubeMX/STM32CubeMX.exe!/log4j/log4j2.stm32cubemx.xml
2026-08-14 17:09:55,655 [INFO] MicroXplorer:98 - [MX] MX Start == 9252202370000
2026-08-14 17:09:55,655 [INFO] MicroXplorer:653 - Detected Java Version = 21.0.9
2026-08-14 17:09:56,033 [INFO] ApplicationProperties:184 - Using Application install path: C:\Program Files\STMicroelectronics\STM32Cube\STM32CubeMX
2026-08-14 17:09:56,064 [INFO] DbMcusXml:78 - Set database path to: C:\Program Files\STMicroelectronics\STM32Cube\STM32CubeMX\\db\/mcu/
2026-08-14 17:09:56,064 [INFO] ApiDb:274 - Set plugin database path to: C:\Program Files\STMicroelectronics\STM32Cube\STM32CubeMX\\db\/plugins/boardmanager/
2026-08-14 17:09:56,064 [WARN] ApiDb:259 - Overriding images path with different value:  => C:\Program Files\STMicroelectronics\STM32Cube\STM32CubeMX\\db\/plugins/mcufinder/images/
2026-08-14 17:09:56,064 [INFO] McuFinderGlobals:63 - Set McuFinder mode to 1 (CubeMX integrated)
2026-08-14 17:09:56,080 [INFO] ApiDb:250 - Set database path to: C:\Users\Shirisha Manchi\.stmcufinder\plugins\mcufinder//mcu/
2026-08-14 17:09:56,095 [INFO] DbMcusAds:125 - Set database path to: C:\Users\Shirisha Manchi\.stmcufinder\plugins\mcufinder//mcu/
2026-08-14 17:09:56,147 [INFO] CrossReferenceDbSqlite:203 - Set database path to: C:\Users\Shirisha Manchi\.stmcufinder\plugins\mcufinder//mcu/cs/
2026-08-14 17:09:56,332 [INFO] RulesReader:64 - Compatibility file has been processed (323 Rules)
2026-08-14 17:09:56,379 [INFO] STM32CubeMX:60 - Starting STM32CubeMX
2026-08-14 17:09:56,474 [INFO] MainPanel:274 - HeapMemory: 50331648
2026-08-14 17:09:56,552 [INFO] MainFrame:145 - AppUserModelID : STM32CubeMX.6.17.0-RC5
2026-08-14 17:09:56,740 [INFO] DbMcusXml:78 - Set database path to: C:\Program Files\STMicroelectronics\STM32Cube\STM32CubeMX\\db\/mcu/
2026-08-14 17:09:56,740 [INFO] ApiDb:274 - Set plugin database path to: C:\Program Files\STMicroelectronics\STM32Cube\STM32CubeMX\\db\/plugins/boardmanager/
2026-08-14 17:09:56,740 [INFO] ApiDb:261 - Set plugin images path to: C:\Program Files\STMicroelectronics\STM32Cube\STM32CubeMX\\db\/plugins/mcufinder/images/
2026-08-14 17:09:56,740 [WARN] DbFile:41 - Overriding database path with different value: C:\Users\Shirisha Manchi\.stmcufinder\plugins\mcufinder/ => C:\Users\Shirisha Manchi\.stmcufinder\plugins\mcufinder
2026-08-14 17:09:56,740 [INFO] ApiDb:250 - Set database path to: C:\Users\Shirisha Manchi\.stmcufinder\plugins\mcufinder//mcu/
2026-08-14 17:09:56,740 [WARN] DbFile:41 - Overriding database path with different value: C:\Users\Shirisha Manchi\.stmcufinder\plugins\mcufinder/ => C:\Users\Shirisha Manchi\.stmcufinder\plugins\mcufinder
2026-08-14 17:09:56,740 [INFO] DbMcusAds:125 - Set database path to: C:\Users\Shirisha Manchi\.stmcufinder\plugins\mcufinder//mcu/
2026-08-14 17:09:56,756 [WARN] DbFile:41 - Overriding database path with different value: C:\Users\Shirisha Manchi\.stmcufinder\plugins\mcufinder/ => C:\Users\Shirisha Manchi\.stmcufinder\plugins\mcufinder
2026-08-14 17:09:56,757 [WARN] DbFile:41 - Overriding database path with different value: C:\Users\Shirisha Manchi\.stmcufinder\plugins\mcufinder/ => C:\Users\Shirisha Manchi\.stmcufinder\plugins\mcufinder
2026-08-14 17:09:56,758 [INFO] CrossReferenceDbSqlite:203 - Set database path to: C:\Users\Shirisha Manchi\.stmcufinder\plugins\mcufinder//mcu/cs/
2026-08-14 17:09:56,772 [INFO] ApplicationProperties:184 - Using Application install path: C:\Program Files\STMicroelectronics\STM32Cube\STM32CubeMX
2026-08-14 17:09:56,772 [INFO] PluginManage:196 - Search for loadable plugins [exclusion list=, ]
2026-08-14 17:09:56,772 [INFO] PluginManage:310 - Check plugin analytics
2026-08-14 17:09:57,337 [INFO] AnalyticsPlugin:253 - Accepted Software Licenses: STM32CubeMX.6.18.1,STM32CubeMX.6.18.0,STM32CubeMX.6.17.0
2026-08-14 17:09:57,337 [INFO] AnalyticsPlugin:255 - Accepted CMSIS Pack Licenses:
2026-08-14 17:09:57,337 [INFO] AnalyticsPlugin:257 - Accepted Firmware Licenses:
2026-08-14 17:09:57,353 [INFO] PluginManage:359 - Loaded plugin analytics (category:tool,tabindex:-1)
2026-08-14 17:09:57,353 [INFO] PluginManage:310 - Check plugin cadmodel
2026-08-14 17:09:57,353 [INFO] CADModel:105 - Init CAD model plugin
2026-08-14 17:09:57,353 [INFO] PluginManage:359 - Loaded plugin cadmodel (category:power,tabindex:5)
2026-08-14 17:09:57,369 [INFO] PluginManage:310 - Check plugin clock
2026-08-14 17:09:57,384 [INFO] PluginManage:359 - Loaded plugin clock (category:base,tabindex:2)
2026-08-14 17:09:57,384 [INFO] PluginManage:310 - Check plugin ddr
2026-08-14 17:09:57,400 [INFO] PluginManage:359 - Loaded plugin ddr (category:tool,tabindex:6)
2026-08-14 17:09:57,400 [INFO] PluginManage:310 - Check plugin filemanager
2026-08-14 17:09:57,589 [INFO] PluginManage:359 - Loaded plugin filemanager (category:base,tabindex:10)
2026-08-14 17:09:57,589 [INFO] PluginManage:310 - Check plugin ipmanager
2026-08-14 17:09:57,589 [INFO] PluginManage:359 - Loaded plugin ipmanager (category:base,tabindex:5)
2026-08-14 17:09:57,605 [INFO] PluginManage:310 - Check plugin lpbam
2026-08-14 17:09:57,605 [INFO] PluginManage:359 - Loaded plugin lpbam (category:base,tabindex:0)
2026-08-14 17:09:57,605 [INFO] PluginManage:310 - Check plugin memorymap
2026-08-14 17:09:57,637 [INFO] PluginManage:359 - Loaded plugin memorymap (category:base,tabindex:4)
2026-08-14 17:09:57,637 [INFO] PluginManage:310 - Check plugin pinoutandconfiguration
2026-08-14 17:09:57,637 [INFO] PluginManage:359 - Loaded plugin pinoutandconfiguration (category:base,tabindex:1)
2026-08-14 17:09:57,637 [INFO] PluginManage:310 - Check plugin pinoutconfig
2026-08-14 17:09:57,747 [WARN] SupportedApi:132 - Cannot load RTOS API schema: s4s-elt-must-match.1: The content of 'definitions' must match (annotation?, (simpleType | complexType)?, (unique | key | keyref)*)). A problem was found starting at: attribute.
2026-08-14 17:09:57,999 [INFO] PluginManage:359 - Loaded plugin pinoutconfig (category:base,tabindex:0)
2026-08-14 17:09:57,999 [INFO] PluginManage:310 - Check plugin power
2026-08-14 17:09:58,022 [INFO] PluginManage:359 - Loaded plugin power (category:power,tabindex:4)
2026-08-14 17:09:58,022 [INFO] PluginManage:310 - Check plugin projectmanager
2026-08-14 17:09:58,109 [INFO] PluginManage:359 - Loaded plugin projectmanager (category:projectmanager,tabindex:4)
2026-08-14 17:09:58,109 [INFO] PluginManage:310 - Check plugin rif
2026-08-14 17:09:58,125 [INFO] PluginManage:359 - Loaded plugin rif (category:base,tabindex:3)
2026-08-14 17:09:58,125 [INFO] PluginManage:310 - Check plugin thirdparty
2026-08-14 17:09:58,313 [WARN] IntegrityCheckThread:84 - waiting for thirdparty lock release [integrity check]
2026-08-14 17:09:58,313 [INFO] IntegrityCheckThread:86 - entering critical section [integrity check]
2026-08-14 17:09:58,313 [INFO] PluginManage:359 - Loaded plugin thirdparty (category:base,tabindex:-1)
2026-08-14 17:09:58,321 [INFO] ThirdPartyUpdaterWithRetryManager:70 - Updater plugin not ready yet. [1/15]
2026-08-14 17:09:58,323 [INFO] PluginManage:310 - Check plugin tools
2026-08-14 17:09:58,323 [INFO] PluginManage:359 - Loaded plugin tools (category:base,tabindex:7)
2026-08-14 17:09:58,323 [INFO] PluginManage:310 - Check plugin tutovideos
2026-08-14 17:09:58,527 [INFO] PluginManage:359 - Loaded plugin tutovideos (category:base,tabindex:-1)
2026-08-14 17:09:58,527 [INFO] PluginManage:310 - Check plugin updater
2026-08-14 17:09:58,576 [INFO] PluginManage:359 - Loaded plugin updater (category:base,tabindex:12)
2026-08-14 17:09:58,576 [INFO] PluginManage:310 - Check plugin userauth
2026-08-14 17:09:58,590 [INFO] UserAuth:71 - Init User Auth plugin
2026-08-14 17:09:58,590 [INFO] PluginManage:359 - Loaded plugin userauth (category:base,tabindex:14)
2026-08-14 17:09:58,590 [INFO] PluginManage:310 - Check plugin usernotification
2026-08-14 17:09:58,590 [INFO] UserNotification:110 - Init UserNotification plugin
2026-08-14 17:09:58,590 [INFO] PluginManage:359 - Loaded plugin usernotification (category:base,tabindex:19)
2026-08-14 17:09:58,590 [INFO] PluginManage:283 - PluginManage : Loaded plugins [19]
2026-08-14 17:09:58,923 [INFO] PinOutPanel:1463 - setPackage(No Configuration,No Configuration)
2026-08-14 17:09:58,998 [INFO] CADModel:166 - CPN selected for project level
2026-08-14 17:09:58,998 [INFO] CADModel:115 - Register for checkConnection events
2026-08-14 17:09:59,024 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,030 [INFO] PluginManager:220 - loadIPPluginJar : add adc
2026-08-14 17:09:59,030 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,030 [INFO] PluginManager:220 - loadIPPluginJar : add aes
2026-08-14 17:09:59,030 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,030 [INFO] PluginManager:220 - loadIPPluginJar : add can
2026-08-14 17:09:59,030 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,030 [INFO] PluginManager:220 - loadIPPluginJar : add comp
2026-08-14 17:09:59,030 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,030 [INFO] PluginManager:220 - loadIPPluginJar : add cryp
2026-08-14 17:09:59,046 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,046 [INFO] PluginManager:220 - loadIPPluginJar : add ddr_ctrl_phy
2026-08-14 17:09:59,046 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,046 [INFO] PluginManager:220 - loadIPPluginJar : add dfsdm
2026-08-14 17:09:59,046 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,046 [INFO] PluginManager:220 - loadIPPluginJar : add dma
2026-08-14 17:09:59,061 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,061 [INFO] PluginManager:220 - loadIPPluginJar : add dma3
2026-08-14 17:09:59,061 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,061 [INFO] PluginManager:220 - loadIPPluginJar : add extmemmanager
2026-08-14 17:09:59,061 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,061 [INFO] PluginManager:220 - loadIPPluginJar : add fatfs
2026-08-14 17:09:59,061 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,061 [INFO] PluginManager:220 - loadIPPluginJar : add fmc
2026-08-14 17:09:59,079 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,079 [INFO] PluginManager:220 - loadIPPluginJar : add freertos
2026-08-14 17:09:59,079 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,079 [INFO] PluginManager:220 - loadIPPluginJar : add genericplugin
2026-08-14 17:09:59,079 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,079 [INFO] PluginManager:220 - loadIPPluginJar : add gfxmmu
2026-08-14 17:09:59,093 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,093 [INFO] PluginManager:220 - loadIPPluginJar : add gic
2026-08-14 17:09:59,093 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,093 [INFO] PluginManager:220 - loadIPPluginJar : add gpio
2026-08-14 17:09:59,093 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,093 [INFO] PluginManager:220 - loadIPPluginJar : add gtzc
2026-08-14 17:09:59,093 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,093 [INFO] PluginManager:220 - loadIPPluginJar : add hash
2026-08-14 17:09:59,109 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,109 [INFO] PluginManager:220 - loadIPPluginJar : add hsp_engine
2026-08-14 17:09:59,109 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,109 [INFO] PluginManager:220 - loadIPPluginJar : add i2c
2026-08-14 17:09:59,109 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,109 [INFO] PluginManager:220 - loadIPPluginJar : add i2s
2026-08-14 17:09:59,109 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,109 [INFO] PluginManager:220 - loadIPPluginJar : add i3c
2026-08-14 17:09:59,125 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,125 [INFO] PluginManager:220 - loadIPPluginJar : add ipddr
2026-08-14 17:09:59,125 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,125 [INFO] PluginManager:220 - loadIPPluginJar : add linkedlist
2026-08-14 17:09:59,141 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,141 [INFO] PluginManager:220 - loadIPPluginJar : add lorawan
2026-08-14 17:09:59,141 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,141 [INFO] PluginManager:220 - loadIPPluginJar : add ltdc
2026-08-14 17:09:59,141 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,141 [INFO] PluginManager:220 - loadIPPluginJar : add mdma
2026-08-14 17:09:59,156 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,156 [INFO] PluginManager:220 - loadIPPluginJar : add nvic
2026-08-14 17:09:59,156 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,156 [INFO] PluginManager:220 - loadIPPluginJar : add opamp
2026-08-14 17:09:59,156 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,156 [INFO] PluginManager:220 - loadIPPluginJar : add openamp
2026-08-14 17:09:59,156 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,156 [INFO] PluginManager:220 - loadIPPluginJar : add pdm2pcm
2026-08-14 17:09:59,172 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,172 [INFO] PluginManager:220 - loadIPPluginJar : add plateformsettings
2026-08-14 17:09:59,172 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,172 [INFO] PluginManager:220 - loadIPPluginJar : add quadspi
2026-08-14 17:09:59,172 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,172 [INFO] PluginManager:220 - loadIPPluginJar : add radio
2026-08-14 17:09:59,187 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,187 [INFO] PluginManager:220 - loadIPPluginJar : add resmgrutility
2026-08-14 17:09:59,187 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,187 [INFO] PluginManager:220 - loadIPPluginJar : add sai
2026-08-14 17:09:59,187 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,187 [INFO] PluginManager:220 - loadIPPluginJar : add spi
2026-08-14 17:09:59,203 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,203 [INFO] PluginManager:220 - loadIPPluginJar : add stm32_wpan
2026-08-14 17:09:59,203 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,203 [INFO] PluginManager:220 - loadIPPluginJar : add tim
2026-08-14 17:09:59,203 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,203 [INFO] PluginManager:220 - loadIPPluginJar : add touchsensing
2026-08-14 17:09:59,203 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,219 [INFO] PluginManager:220 - loadIPPluginJar : add tracer_emb
2026-08-14 17:09:59,235 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,250 [INFO] PluginManager:220 - loadIPPluginJar : add ts
2026-08-14 17:09:59,250 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,250 [INFO] PluginManager:220 - loadIPPluginJar : add tsc
2026-08-14 17:09:59,250 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,250 [INFO] PluginManager:220 - loadIPPluginJar : add ucpd
2026-08-14 17:09:59,250 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,250 [INFO] PluginManager:220 - loadIPPluginJar : add usart
2026-08-14 17:09:59,266 [INFO] IPUIPlugin:83 - create IPUIPlugin
2026-08-14 17:09:59,266 [INFO] PluginManager:220 - loadIPPluginJar : add usbx
2026-08-14 17:09:59,298 [INFO] Updater:1136 - Updater Version found : 6.17.0
2026-08-14 17:09:59,313 [INFO] ApplicationProperties:184 - Using Application install path: C:\Program Files\STMicroelectronics\STM32Cube\STM32CubeMX
2026-08-14 17:10:00,130 [INFO] MainUpdater:2892 - connection check result : 22
2026-08-14 17:10:00,130 [INFO] MainUpdater:289 - Updater Check For Update Now.
2026-08-14 17:10:00,130 [INFO] MicroXplorer:498 - Change Database Version : DB.6.0.170
2026-08-14 17:10:00,365 [INFO] RulesReader:64 - Compatibility file has been processed (323 Rules)
2026-08-14 17:10:00,381 [INFO] RulesReader:64 - Compatibility file has been processed (323 Rules)
2026-08-14 17:10:00,396 [INFO] CADModel:166 - CPN selected for project level
2026-08-14 17:10:00,396 [INFO] CADModel:115 - Register for checkConnection events
2026-08-14 17:10:00,426 [INFO] CheckServerUpdateThread:120 - End of CheckServer Thread
2026-08-14 17:10:00,615 [INFO] CADModel:166 - CPN selected for project level
2026-08-14 17:10:00,615 [INFO] CADModel:115 - Register for checkConnection events
2026-08-14 17:10:00,756 [INFO] HomeAdPanel:117 - Auto-refresh data requested => check proxy status ongoing
2026-08-14 17:10:00,772 [INFO] HomeAdPanel:138 - Proxy status is invalid, do not check for advertisement updates
2026-08-14 17:10:00,835 [INFO] DbMcusAds:53 - JSON generation date=Thu Sep 30 12:25:09 IST 2021 (1632984909247)
2026-08-14 17:10:00,867 [WARN] DetailPanel:346 - Failed to get advertising image, set to default
2026-08-14 17:10:00,961 [WARN] DetailPanel:346 - Failed to get advertising image, set to default
2026-08-14 17:10:01,039 [ERROR] ConfigurationRetriever:142 - IOException on connection: (certificate_unknown) PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
2026-08-14 17:10:01,057 [ERROR] ConfigurationRetriever:142 - IOException on connection: (certificate_unknown) PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
2026-08-14 17:10:01,078 [ERROR] ConfigurationRetriever:142 - IOException on connection: (certificate_unknown) PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
2026-08-14 17:10:01,275 [INFO] MainFrame:210 - [MX] HOME_PANEL == 9257839426500
2026-08-14 17:10:01,306 [INFO] MainFrame:569 - Register for checkConnection events
2026-08-14 17:10:01,338 [INFO] JxBrowserEngine:153 - Initiate JxBrowser Engine with user profile folder
2026-08-14 17:10:01,478 [INFO] ThirdParty:978 - Integrity check success = true
2026-08-14 17:10:01,478 [INFO] IntegrityCheckThread:100 - exiting critical section [integrity check]
2026-08-14 17:10:01,478 [INFO] IntegrityCheckThread:103 - End integrity checks thread
2026-08-14 17:10:02,594 [INFO] WebApp:108 - Instantiating new browser for Auth
2026-08-14 17:10:03,401 [INFO] WebApp:239 - Apply proxy settings
2026-08-14 17:10:03,401 [INFO] WebApp:311 - Chromium requires no authentication
2026-08-14 17:10:03,417 [INFO] WebApp:267 - Direct internet connection detected
2026-08-14 17:10:03,425 [INFO] WebApp:370 - Register for checkConnection events
2026-08-14 17:10:56,250 [INFO] LoadServerUpdatesThread:375 - End of LoadServerUpdate Thread
2026-08-14 17:10:56,533 [INFO] WebApp:239 - Apply proxy settings
2026-08-14 17:10:56,533 [INFO] WebApp:311 - Chromium requires no authentication
2026-08-14 17:10:56,533 [INFO] WebApp:267 - Direct internet connection detected
2026-08-14 17:10:56,560 [INFO] CheckServerUpdateThread:120 - End of CheckServer Thread

[Ghofrane GSOURI]

Hello ​@Shirisha Manchi 

The command-line log shows that STM32CubeMX can reach the backend, but the HTTPS handshake fails due to a certificate trust issue. The relevant error is:

PKIX path building failed / unable to find valid certification path to requested target.

 

That typically happens when a firewall, endpoint security tool, antivirus HTTPS inspection, or a corporate web security solution intercepts the connection and presents a certificate that the Java runtime inside CubeMX does not trust. So at this stage, the evidence points much more to a local or corporate security configuration issue than to a defect in CubeMX itself as ​@Hamza King mentioned.

So you should inform your IT/security team.

THX

Ghofrane