getFileAsync crashes password protected Word document

[filial23]

Provide required information needed to triage your issue

Your Environment

• Platform [PC desktop, Mac, iOS, Office on the web]: PC desktop
• Host [Excel, Word, PowerPoint, etc.]: Word
• Office version number: version 2407 (build 17830.20138)
• Operating System: Windows 11

Expected behavior

Word document protected with a password doesn't crash when calling getFileAsync.

Current behavior

Word document protected with a password crashes when calling getFileAsync.

Steps to reproduce

1. Run Word.
2. Enter a password to unlock the document.
3. Sideload Word Add-in.
4. Call requestGetFile method in the following code block.

async function request<T>({ method, officeObj, args }: { method: string; officeObj: any; args: any[] }) {
  return new Promise<T>((resolve, reject) =>
    officeObj[method](...args, (response: Office.AsyncResult<T>) => {
      if (response.status === Office.AsyncResultStatus.Failed) {
        return reject(response.error);
      }
      resolve(response.value);
    }),
  );
}

async function requestGetFile(fileType: Office.FileType = Office.FileType.Compressed): Promise<Office.File> {
  return request<Office.File>({
    method: 'getFileAsync',
    officeObj: Office.context.document,
    args: [fileType],
  });
}

Additional information

• It seems that the same issue was reported in the past here.
• The same issue happens on Word for Mac.

Context

This issue has a huge impact because the getFileAync method is used to provide our product's fundamental function for our clients.

Useful logs

• [ ] Console errors
• [ ] Screenshots
• [ ] Test file (if only happens on a particular file)

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[filial23]

The issue doesn't happen on Version 2406 (Build 17726.20160). Any bugs would possibly be created between version 2406 and 2407.

[shanshanzheng-dev]

Thanks for reporting this issue. we'll take a look and report back if we have a suggestion for you.

[jipyua]

Thank you @filial23 for reporting this. We have reproduced this locally and was investigating the root cause of this regression. We will update this thread and let you know once we have some progress. Thanks.

[jipyua]

hi @filial23 , thanks for your patience. We have internally figured out the root cause and checked in the fix. Next step the fix will go through the regular valiation and release process which should be availabe to M365 current channel around early Novermber. Thanks.

[filial23]

Hello @jipyua , Thanks for your investigation. It's good to hear that the fix will be released in early November! Thanks, Takafumi.