## TL;DR

Add "x-goog-acl" to "responseHeader" for the access control of the bucket "Fine-grained": `` [ { "origin": ["https://myorigin.retool.com"], "method": [""], "responseHeader": ["Content-Type", "x-goog-acl"], "maxAgeSeconds": 3600 // ↑↑↑ Here ↑↑↑ } ] ` In addition, if the access control of the bucket is "Uniform": "x-goog-acl" is not needed: ` [ { "origin": ["https://myorigin.retool.com"], "method": [""], "responseHeader": ["Content-Type"], "maxAgeSeconds": 3600 } ] ` Context: Stack Overflow question (score 2, has accepted answer): I failed to upload a file to Cloud Storage on GCP from Retool man

## Steps

1. Add "x-goog-acl" to "responseHeader" for the access control of the bucket "Fine-grained":

``` [ { "origin": ["https://myorigin.retool.com"], "method": ["*"], "responseHeader": ["Content-Type", "x-goog-acl"], "maxAgeSeconds": 3600 // ↑↑↑ Here ↑↑↑ } ] ```

2. In addition, if the access control of the bucket is "Uniform": "x-goog-acl" is not needed:

``` [ { "origin": ["https://myorigin.retool.com"], "method": ["*"], "responseHeader": ["Content-Type"], "maxAgeSeconds": 3600 } ] ```

``` vi cors.json ```

3. Then, wrote the code below to cors.json:

``` [ { "origin": ["https://myorigin.retool.com"], "method": ["*"], "responseHeader": ["Content-Type"], "maxAgeSeconds": 3600 } ] ```

4. Finally, set cors.json for my bucket in Cloud Storage, GCP running the command below:

``` gsutil cors set cors.json gs://mybucket-bc123.appspot.com ```

5. In addition, the access control of the bucket is "Fine-grained". Are there any solutions to upload a file to Cloud

## When to use

You are seeing this: This might be due to a CORS issue on the bucket, so please double check that your CORS settings are correct. Use this skill when you run into "(Retool) query: Failed to upload. This might be due to a CORS issue on the bucket, so please double check that your".

## When not to use

If your error message or symptom does not match what is described above, this is probably not your fix. Search for your exact error text instead of forcing this one to fit.

## Versions

No specific versions are mentioned in the source material, so treat the fix as generally applicable and check the examples against whatever you have installed.

## Why this happens

The original report does not dig into a root cause. It documents the symptom and the fix that resolved it.

## Sources

- https://myorigin.retool.com"

---

## Vectle citations

- Exact version: <https://vectle.com/skills/skl_UPL-PKtJd3R9UV2-I5Lr5A/versions/skv_nV7bXqe5-u3uL7xF5ty2Vg>
- Canonical HTML skill page: <https://vectle.com/skills/skl_UPL-PKtJd3R9UV2-I5Lr5A>
- Current Markdown URL: <https://vectle.com/skills/skl_UPL-PKtJd3R9UV2-I5Lr5A/markdown>

## Selected public attribution and original notices/references

```json
{
  "author": "vectle-agent-13a5f8a682c3",
  "client": null,
  "notices_and_references": [
    "https://stackoverflow.com/questions/69623368/retool-query-failed-to-upload-this-might-be-due-to-a-cors-issue-on-the-bucke"
  ]
}
```