Ok, in this way seems that "\compile\jsreport-3.7.1-405f5Qt-s\chrome" directory is properly moved into tempDirectory specified into AppEnvironment variable.
All I can do now is monitoring the pdf report generation feature on our application, hoping that no unknown process can delete chrome content anymore.
Thanks!

Thanks for your reply. I tried to reinstall jsreport service specifying temp directory, and now the path to executable is changed from:
C:\Users\ADMINI~1\AppData\Local\Temp\2\jsreport\compile\jsreport-2.11.0-SJu_2xpjD\nssm64.exe
to:
{new_temp_directory}\compile\jsreport-3.7.1-405f5Qt-s\nssm64.exe

But the unzipped chrome directory still remain in C:\Windows\Temp\jsreport\compile\jsreport-3.7.1-405f5Qt-s\chrome

I changed jsreport.config.json file by adding "tempDirectory" property, like this:

{
"httpPort": 5488,
"store": {
"provider": "fs"
},
"blobStorage": {
"provider": "fs"
},
"logger": {
"console": {
"transport": "console",
"level": "debug"
},
"file": {
"transport": "file",
"level": "info",
"filename": "logs/reporter.log"
},
"error": {
"transport": "file",
"level": "error",
"filename": "logs/error.log"
}
},
"allowLocalFilesAccess": true,
"reportTimeout": 60000,
"templatingEngines": {
"strategy": "http-server"
},
"extensions": {
"authentication": {
"cookieSession": {},
"admin": {
"username": "admin",
"password": "password"
},
"enabled": false
},
"scripts": {
"strategy": "http-server"
}
},
"licenseKey": "{perpetual_license}",
"tempDirectory": "{new_temp_dir}"
}

And then restarted jsreport service.

Hello,
I'm trying to generate a pdf report with jsreport 2.11.0 on Windows Server 2019 machine, but generation fail and on last failed requests table there is error:

"Failed to launch chrome! spawn C:\Windows\TEMP\jsreport\compile\jsreport-2.11.0-SJu_2xpjD\chrome\chrome.exe ENOENT TROUBLESHOOTING: https://github.com/GoogleChrome/puppeteer/blob/master/docs/troubleshooting.md
Error: Failed to launch chrome! spawn C:\Windows\TEMP\jsreport\compile\jsreport-2.11.0-SJu_2xpjD\chrome\chrome.exe ENOENT TROUBLESHOOTING: https://github.com/GoogleChrome/puppeteer/blob/master/docs/troubleshooting.md at onClose (D:\snapshot\jsreport\node_modules\puppeteer\lib\Launcher.js:348:14) at ChildProcess. (D:\snapshot\jsreport\node_modules\puppeteer\lib\Launcher.js:339:64) at ChildProcess.emit (events.js:311:20) at Process.ChildProcess._handle.onexit (internal/child_process.js:273:12) at onErrorNT (internal/child_process.js:469:16) at processTicksAndRejections (internal/process/task_queues.js:84:21)"

Then I check the existence of chrome.exe in the C:\Windows\TEMP\jsreport\compile\jsreport-2.11.0-SJu_2xpjD\chrome directory, and I found that all files in the directory were disappeared, except for directories, that were empty.
It seems like some task delete all files in C:\Windows\TEMP\jsreport\compile\jsreport-2.11.0-SJu_2xpjD\chrome.
I looked for this error in jsreport forum and I found this topic "https://forum.jsreport.net/topic/1548/jsreport-2-7-2-all-locked-up/4", which suggest to change the default temp directory.
Well, I tried to change default temp directory, but only directories "autocleanup" and "core" were moved to new location; instead, "cli" and "compile", that contains chrome directory, remain in the previous temp directory c:\windows\temp\jsreport.
Any suggestion?