I just updated to the newest version of Studio to see if the slow issues are fixed, I went to start a site that was already setup and I'm given this error on any site I try to start.
[2026-04-23T04:35:22.886Z][erro][main] Failed to kill child process with pid 25620. This likely means the process is already terminated. CLI args: [
"_events"
]
[2026-04-23T04:35:23.379Z][info][main] App is terminating[2026-04-23T04:35:26.641Z][info][main] Starting new session
[2026-04-23T04:35:26.642Z][info][main] Checking for update on app launch: https://public-api.wordpress.com/wpcom/v2/studio-app/updates?platform=win32&studioArch=x64&version=1.7.8
[2026-04-23T04:35:28.371Z][info][main] App version: 1.7.8
[2026-04-23T04:35:28.371Z][info][main] Environment: production
[2026-04-23T04:35:28.371Z][info][main] Built from commit: 318534f34a38f47f85f550f4de196389711839a6
[2026-04-23T04:35:28.371Z][info][main] Local timezone: America/Phoenix
[2026-04-23T04:35:28.371Z][info][main] App locale: en-US
[2026-04-23T04:35:28.371Z][info][main] System locale: en-US
[2026-04-23T04:35:28.371Z][info][main] Used language: en
[2026-04-23T04:35:28.393Z][info][main] Migrated auth/locale to C:\Users\[REDACTED]\.studio\shared.json
[2026-04-23T04:35:28.401Z][info][main] Migrated sites/snapshots to C:\Users\[REDACTED]\.studio\cli.json
[2026-04-23T04:35:28.409Z][info][main] Migrated Desktop settings from C:\Users\[REDACTED]\AppData\Roaming\Studio\appdata-v1.json to C:\Users\[REDACTED]\.studio\app.json
[2026-04-23T04:35:28.411Z][info][main] Migrated old appdata file from C:\Users\[REDACTED]\AppData\Roaming\Studio\appdata-v1.json to C:\Users\[REDACTED]\AppData\Roaming\Studio\appdata-v1.deprecated.json
[2026-04-23T04:35:28.438Z][info][main] Setting Sentry user ID: a185849d-abcd-49b6-b3a2-fff678b5f4e0
[2026-04-23T04:35:42.692Z][info][main] [CLI] [{"id":"9e52adc8-6295-43dd-99c7-b41b50d3be2a","name":"Aggressive Apparel","path":"\\\\wsl.localhost\\Ubuntu\\home\\shawn\\Websites\\aggressive-apparel-studio","port":8883,"phpVersion":"8.4","customDomain":"aggressive.wp.local","enableHttps":true,"adminPassword":"ZVQ5SCZwajZtcENLWUpBKWY3SWN5KHVW","isWpAutoUpdating":true,"autoStart":false,"url":"https://aggressive.wp.local","running":false},{"id":"32f7229c-8ad5-40c8-a171-1388cc074d94","name":"LAAO","path":"\\\\wsl.localhost\\Ubuntu\\home\\shawn\\Websites\\laartsonlinecom","port":8882,"phpVersion":"8.3","customDomain":"laao.wp.local","enableHttps":true,"adminPassword":"QGgmV2NtSGJzN1BGZjhoeVNvSTUyaVFO","isWpAutoUpdating":true,"autoStart":false,"url":"https://laao.wp.local","running":false}]
[2026-04-23T04:35:44.958Z][info][main] [CLI] []
[2026-04-23T04:39:58.610Z][info][main] Starting server for 'Aggressive Apparel'
[2026-04-23T04:40:00.242Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Starting process daemon…
[2026-04-23T04:40:00.251Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Loading site…
[2026-04-23T04:40:01.596Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Starting HTTP proxy server…
[2026-04-23T04:40:01.630Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Generating SSL certificates…
[2026-04-23T04:40:01.632Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Adding domain to hosts file…
[2026-04-23T04:40:04.153Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Setting up SQLite integration, if needed…
[2026-04-23T04:40:04.435Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Starting WordPress server…
[2026-04-23T04:40:49.890Z][erro][main] Error occurred in handler for 'startServer': CliCommandError: [Last error message] Failed to start WordPress server: WordPress server process exited unexpectedly
[Base message] Failed to start site
[Exit code] 1
[2026-04-23T04:40:49.896Z][info][main] Stopping server with ID 9e52adc8-6295-43dd-99c7-b41b50d3be2a
[2026-04-23T04:40:51.668Z][info][main] Server is not running
[2026-04-23T04:41:11.426Z][info][main] Starting server for 'Aggressive Apparel'
[2026-04-23T04:41:13.045Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Starting process daemon…
[2026-04-23T04:41:13.056Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Loading site…
[2026-04-23T04:41:13.070Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Generating SSL certificates…
[2026-04-23T04:41:13.072Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Adding domain to hosts file…
[2026-04-23T04:41:13.073Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Setting up SQLite integration, if needed…
[2026-04-23T04:41:13.352Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Starting WordPress server…
[2026-04-23T04:41:57.663Z][erro][main] Error occurred in handler for 'startServer': CliCommandError: [Last error message] Failed to start WordPress server: WordPress server process exited unexpectedly
[Base message] Failed to start site
[Exit code] 1
[2026-04-23T04:41:57.666Z][info][main] Stopping server with ID 9e52adc8-6295-43dd-99c7-b41b50d3be2a
[2026-04-23T04:41:59.453Z][info][main] Server is not running
[2026-04-23T04:42:07.423Z][info][main] Manually checking for update: https://public-api.wordpress.com/wpcom/v2/studio-app/updates?platform=win32&studioArch=x64&version=1.7.8
[2026-04-23T04:43:36.343Z][erro][main] Failed to kill child process with pid 49008. This likely means the process is already terminated. CLI args: [
"_events"
]
[2026-04-23T04:43:38.007Z][info][main] App is terminating[2026-04-23T04:43:38.992Z][info][main] Starting new session
[2026-04-23T04:43:38.992Z][info][main] Checking for update on app launch: https://public-api.wordpress.com/wpcom/v2/studio-app/updates?platform=win32&studioArch=x64&version=1.7.8
[2026-04-23T04:43:41.486Z][info][main] App version: 1.7.8
[2026-04-23T04:43:41.486Z][info][main] Environment: production
[2026-04-23T04:43:41.487Z][info][main] Built from commit: 318534f34a38f47f85f550f4de196389711839a6
[2026-04-23T04:43:41.487Z][info][main] Local timezone: America/Phoenix
[2026-04-23T04:43:41.487Z][info][main] App locale: en-US
[2026-04-23T04:43:41.487Z][info][main] System locale: en-US
[2026-04-23T04:43:41.487Z][info][main] Used language: en
[2026-04-23T04:43:41.492Z][info][main] Setting Sentry user ID: a185849d-abcd-49b6-b3a2-fff678b5f4e0
[2026-04-23T04:43:43.356Z][info][main] [CLI] [{"id":"9e52adc8-6295-43dd-99c7-b41b50d3be2a","name":"Aggressive Apparel","path":"\\\\wsl.localhost\\Ubuntu\\home\\shawn\\Websites\\aggressive-apparel-studio","port":8883,"phpVersion":"8.4","customDomain":"aggressive.wp.local","enableHttps":true,"adminPassword":"ZVQ5SCZwajZtcENLWUpBKWY3SWN5KHVW","isWpAutoUpdating":true,"autoStart":false,"url":"https://aggressive.wp.local","running":false},{"id":"32f7229c-8ad5-40c8-a171-1388cc074d94","name":"LAAO","path":"\\\\wsl.localhost\\Ubuntu\\home\\shawn\\Websites\\laartsonlinecom","port":8882,"phpVersion":"8.3","customDomain":"laao.wp.local","enableHttps":true,"adminPassword":"QGgmV2NtSGJzN1BGZjhoeVNvSTUyaVFO","isWpAutoUpdating":true,"autoStart":false,"url":"https://laao.wp.local","running":false}]
[2026-04-23T04:43:45.341Z][info][main] [CLI] []
[2026-04-23T04:45:01.250Z][erro][main] Error occurred in handler for 'installWordPressSkillById': Error: EEXIST: file already exists, symlink '\\wsl.localhost\Ubuntu\home\shawn\Websites\aggressive-apparel-studio\.agents\skills\studio-cli' -> '\\wsl.localhost\Ubuntu\home\shawn\Websites\aggressive-apparel-studio\.claude\skills\studio-cli'
at async Object.symlink (node:internal/fs/promises:999:10)
at async ensureSkillSymlink (C:\Users\Shawn\AppData\Local\studio\app-1.7.8\resources\app.asar\dist\main\index.js:11446:7)
at async installSkillToSite (C:\Users\Shawn\AppData\Local\studio\app-1.7.8\resources\app.asar\dist\main\index.js:11432:3)
at async installSkillById (C:\Users\Shawn\AppData\Local\studio\app-1.7.8\resources\app.asar\dist\main\index.js:29553:3)
at async installWordPressSkillById (C:\Users\Shawn\AppData\Local\studio\app-1.7.8\resources\app.asar\dist\main\index.js:44601:3)
at async Session.<anonymous> (node:electron/js2c/browser_init:2:116462)
[2026-04-23T04:45:15.506Z][info][main] [CLI Site Editor] Executing: studio site set --path \\wsl.localhost\Ubuntu\home\shawn\Websites\aggressive-apparel-studio --xdebug --admin-email admin@localhost.com --debug-log --no-debug-display
[2026-04-23T04:45:17.099Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Loading site…
[2026-04-23T04:45:17.114Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Starting process daemon…
[2026-04-23T04:45:23.935Z][info][main] Starting server for 'Aggressive Apparel'
[2026-04-23T04:45:25.516Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Starting process daemon…
[2026-04-23T04:45:25.526Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Loading site…
[2026-04-23T04:45:25.536Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Starting HTTP proxy server…
[2026-04-23T04:45:25.561Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Generating SSL certificates…
[2026-04-23T04:45:25.562Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Adding domain to hosts file…
[2026-04-23T04:45:25.563Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Setting up SQLite integration, if needed…
[2026-04-23T04:45:25.862Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Starting WordPress server…
[2026-04-23T04:46:09.904Z][erro][main] Error occurred in handler for 'startServer': CliCommandError: [Last error message] Failed to start WordPress server: WordPress server process exited unexpectedly
[Base message] Failed to start site
[Exit code] 1
[2026-04-23T04:46:09.909Z][info][main] Stopping server with ID 9e52adc8-6295-43dd-99c7-b41b50d3be2a
[2026-04-23T04:46:11.518Z][info][main] Server is not running
[2026-04-23T04:46:18.989Z][erro][main] Failed to kill child process with pid 46748. This likely means the process is already terminated. CLI args: [
"_events"
]
[2026-04-23T04:46:20.568Z][info][main] App is terminating[2026-04-23T04:56:22.594Z][info][main] Starting new session
[2026-04-23T04:56:22.596Z][info][main] Checking for update on app launch: https://public-api.wordpress.com/wpcom/v2/studio-app/updates?platform=win32&studioArch=x64&version=1.7.8
[2026-04-23T04:56:24.015Z][info][main] App version: 1.7.8
[2026-04-23T04:56:24.015Z][info][main] Environment: production
[2026-04-23T04:56:24.015Z][info][main] Built from commit: 318534f34a38f47f85f550f4de196389711839a6
[2026-04-23T04:56:24.015Z][info][main] Local timezone: America/Phoenix
[2026-04-23T04:56:24.015Z][info][main] App locale: en-US
[2026-04-23T04:56:24.015Z][info][main] System locale: en-US
[2026-04-23T04:56:24.015Z][info][main] Used language: en
[2026-04-23T04:56:24.021Z][info][main] Setting Sentry user ID: a185849d-abcd-49b6-b3a2-fff678b5f4e0
[2026-04-23T04:56:26.170Z][info][main] [CLI] [{"id":"9e52adc8-6295-43dd-99c7-b41b50d3be2a","name":"Aggressive Apparel","path":"\\\\wsl.localhost\\Ubuntu\\home\\shawn\\Websites\\aggressive-apparel-studio","port":8883,"phpVersion":"8.4","customDomain":"aggressive.wp.local","enableHttps":true,"adminPassword":"ZVQ5SCZwajZtcENLWUpBKWY3SWN5KHVW","adminEmail":"admin@localhost.com","isWpAutoUpdating":true,"autoStart":false,"enableXdebug":true,"enableDebugLog":true,"enableDebugDisplay":false,"url":"https://aggressive.wp.local","running":false},{"id":"32f7229c-8ad5-40c8-a171-1388cc074d94","name":"LAAO","path":"\\\\wsl.localhost\\Ubuntu\\home\\shawn\\Websites\\laartsonlinecom","port":8882,"phpVersion":"8.3","customDomain":"laao.wp.local","enableHttps":true,"adminPassword":"QGgmV2NtSGJzN1BGZjhoeVNvSTUyaVFO","isWpAutoUpdating":true,"autoStart":false,"url":"https://laao.wp.local","running":false}]
[2026-04-23T04:56:28.057Z][info][main] [CLI] []
[2026-04-23T04:56:30.216Z][info][main] Starting server for 'Aggressive Apparel'
[2026-04-23T04:56:32.008Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Starting process daemon…
[2026-04-23T04:56:32.017Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Loading site…
[2026-04-23T04:56:32.026Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Starting HTTP proxy server…
[2026-04-23T04:56:32.046Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Generating SSL certificates…
[2026-04-23T04:56:32.048Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Adding domain to hosts file…
[2026-04-23T04:56:32.049Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Setting up SQLite integration, if needed…
[2026-04-23T04:56:32.305Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Starting WordPress server…
[2026-04-23T04:57:16.250Z][erro][main] Error occurred in handler for 'startServer': CliCommandError: [Last error message] Failed to start WordPress server: WordPress server process exited unexpectedly
[Base message] Failed to start site
[Exit code] 1
[2026-04-23T04:57:16.256Z][info][main] Stopping server with ID 9e52adc8-6295-43dd-99c7-b41b50d3be2a
[2026-04-23T04:57:17.823Z][info][main] Server is not running
[2026-04-23T04:58:07.671Z][info][main] Starting server for 'LAAO'
[2026-04-23T04:58:09.258Z][info][main] [CLI - 32f7229c-8ad5-40c8-a171-1388cc074d94] Starting process daemon…
[2026-04-23T04:58:09.267Z][info][main] [CLI - 32f7229c-8ad5-40c8-a171-1388cc074d94] Loading site…
[2026-04-23T04:58:09.278Z][info][main] [CLI - 32f7229c-8ad5-40c8-a171-1388cc074d94] Generating SSL certificates…
[2026-04-23T04:58:09.279Z][info][main] [CLI - 32f7229c-8ad5-40c8-a171-1388cc074d94] Adding domain to hosts file…
[2026-04-23T04:58:09.280Z][info][main] [CLI - 32f7229c-8ad5-40c8-a171-1388cc074d94] Setting up SQLite integration, if needed…
[2026-04-23T04:58:09.483Z][info][main] [CLI - 32f7229c-8ad5-40c8-a171-1388cc074d94] Starting WordPress server…
[2026-04-23T04:58:53.618Z][erro][main] Error occurred in handler for 'startServer': CliCommandError: [Last error message] Failed to start WordPress server: WordPress server process exited unexpectedly
[Base message] Failed to start site
[Exit code] 1
[2026-04-23T04:58:53.621Z][info][main] Stopping server with ID 32f7229c-8ad5-40c8-a171-1388cc074d94
[2026-04-23T04:58:55.329Z][info][main] Server is not running
[2026-04-23T05:03:41.684Z][info][main] Starting server for 'Aggressive Apparel'
[2026-04-23T05:03:43.529Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Starting process daemon…
[2026-04-23T05:03:43.538Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Loading site…
[2026-04-23T05:03:44.039Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Generating SSL certificates…
[2026-04-23T05:03:44.040Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Adding domain to hosts file…
[2026-04-23T05:03:44.041Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Setting up SQLite integration, if needed…
[2026-04-23T05:03:44.307Z][info][main] [CLI - 9e52adc8-6295-43dd-99c7-b41b50d3be2a] Starting WordPress server…
[2026-04-23T05:04:28.133Z][erro][main] Error occurred in handler for 'startServer': CliCommandError: [Last error message] Failed to start WordPress server: WordPress server process exited unexpectedly
[Base message] Failed to start site
[Exit code] 1
[2026-04-23T05:04:28.143Z][info][main] Stopping server with ID 9e52adc8-6295-43dd-99c7-b41b50d3be2a
[2026-04-23T05:04:29.798Z][info][main] Server is not running
The Error came up on any site I already had.
Quick summary
I just updated to the newest version of Studio to see if the slow issues are fixed, I went to start a site that was already setup and I'm given this error on any site I try to start.
Here are the logs its talking about:
Steps to reproduce
What you expected to happen
The site to actually work
What actually happened
The Error came up on any site I already had.
Impact
All
Available workarounds?
No and the app is unusable
Platform
Windows
Logs or notes
No response