OpenCode Desktop is just a blank screen, "Just a moment.." MacOS 26.3.1, MCPs will not work #21241

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1. github-actions commented on Apr 6, 2026

   

   github-actionsBot

   on Apr 6, 2026 – with GitHub Actions

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   This issue might be a duplicate of existing issues. Please check:

   • [BUG] Desktop app shows blank screen on macOS 12.x (Monterey) #19051: Desktop app shows blank screen on macOS (Monterey)
   • Desktop white screen #18024: Desktop white screen
   • The OpenCode desktop version displays a blank screen #15185: The OpenCode desktop version displays a blank screen

   If your issue is distinct (e.g. specific to macOS 26.x / newer hardware), please add details that differentiate it from the above.
2. pwillis-oi commented on Apr 6, 2026

   

   pwillis-oi

   on Apr 6, 2026

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   This seems to be affecting multiple users, and there is no known cause or fix, and no troubleshooting steps we can take.

   I found this troubleshooting page: https://opencode.ai/docs/troubleshooting/

   No logs to speak of

   Tried to run app from command line:

   18:35 $ /Applications/OpenCode.app/Contents/MacOS/OpenCode --help
   2026-04-06T22:35:15.653233Z  INFO opencode_lib: Initializing app
   2026-04-06T22:35:15.653325Z  INFO opencode_lib: Spawning sidecar on http://127.0.0.1:54841
   2026-04-06T22:35:15.653332Z  INFO opencode_lib::cli: Spawning sidecar port=54841
   2026-04-06T22:35:15.863743Z  WARN opencode_lib::cli: Falling back to app environment shell="/bin/zsh"
   2026-04-06T22:35:15.864110Z  INFO opencode_lib::cli: No CLI installation found, skipping sync
   2026-04-06T22:35:15.964342Z  INFO sidecar: opencode_lib::cli: Sidecar terminated code=Some(0) signal=None
   2026-04-06T22:35:15.964749Z ERROR opencode_lib: Sidecar health check failed: Sidecar terminated before becoming healthy (code=Some(0) signal=None)
   2026-04-06T22:35:15.964762Z  INFO opencode_lib: Loading task finished
   2026-04-06T22:35:15.964770Z  INFO opencode_lib: Loading done, completing initialisation
   

   Screen just says "Could not reach Local Server. Retrying automatically..."

   Adding --log-level DEBUG has no effect

   Tried Reload Webview, Restart, no difference
3. pwillis-oi commented on Apr 6, 2026

   

   pwillis-oi

   on Apr 6, 2026

   Last edited by pwillis-oi

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   I have also tried:

   rm -rf \
     ~/Library/WebKit/ai.opencode.desktop \
     "~/Library/Application Support/ai.opencode.desktop" \
     ~/.config/opencode/ \
     ~/.cache/opencode/ \
     ~/.local/share/opencode
   

   If I add the ~/.local/ removal, this does change:

   18:48 $ /Applications/OpenCode.app/Contents/MacOS/OpenCode --log-level DEBUG --print-logs
   2026-04-06T22:48:50.846660Z  INFO opencode_lib: Initializing app
   2026-04-06T22:48:50.847115Z  INFO opencode_lib: Spawning sidecar on http://127.0.0.1:55713
   2026-04-06T22:48:50.847125Z  INFO opencode_lib::cli: Spawning sidecar port=55713
   2026-04-06T22:48:50.967818Z  WARN opencode_lib::cli: Falling back to app environment shell="/bin/zsh"
   2026-04-06T22:48:50.968388Z  INFO opencode_lib::cli: No CLI installation found, skipping sync
   2026-04-06T22:48:50.968485Z  INFO opencode_lib: Sqlite file not found, waiting for it to be generated path=/Users/pwillis/.local/share/opencode/opencode.db
   2026-04-06T22:48:51.070209Z  INFO sidecar: opencode_lib::cli: Sidecar terminated code=Some(0) signal=None
   

   However now it opens the Tauri prompt again which hangs forever.

   If I close the app and reopen, I get the previous hanging "Retrying" window, with the sidecar error (see output from last comment).
4. merdemkoc commented on Apr 29, 2026

   

   merdemkoc

   on Apr 29, 2026

   Last edited by merdemkoc

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   I noticed these logs when running the app with --help from the terminal:

   ERROR opencode_lib: Failed to sync CLI: Failed to get CLI version
   INFO sidecar: opencode_lib::cli: EACCES: permission denied, mkdir '/Users/<user>/.local/share/opencode/log'
   

   Looks like the root cause was permission ownership on the ~/.local directory.

   Fixing it with:

   sudo chown -R $(whoami) ~/.local

   resolved the issue for me.

   👍React with 👍2Reacted by Kenji Wellman and Savvas
5. thdxr

   assigned

   Brendonovich

   on May 3, 2026
6. dmknob commented on May 4, 2026

   

   dmknob

   on May 4, 2026

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   I noticed these logs when running the app with --help from the terminal:

   ERROR opencode_lib: Failed to sync CLI: Failed to get CLI version
   INFO sidecar: opencode_lib::cli: EACCES: permission denied, mkdir '/Users/<user>/.local/share/opencode/log'
   

   Looks like the root cause was permission ownership on the ~/.local directory.

   Fixing it with:

   sudo chown -R $(whoami) ~/.local

   resolved the issue for me.

   It works for me too. Tks.
7. github-actions commented on Jul 4, 2026

   

   github-actionsBot

   on Jul 4, 2026 – with GitHub Actions

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   To stay organized issues are automatically closed after 60 days of no activity. If the issue is still relevant please open a new one.
8. github-actions

   closed this as not plannedon Jul 4, 2026