*English follows Japanese

■Title(件名)：
Excel 2016 for Mac で Excel ファイルを利用中に、ファイルが破損して修復することができない

Excel files are unexpectedly corrupted while using the Excel files on OneDrive for Business with Excel 2016 for Mac devices.
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■Description(内容):
Excel 2016 for Mac で OneDrive for Business 上の Excel ファイルを利用中に、ファイルが破損して修復することができない場合がある。Excel 2016 for Mac のバージョンを、16.13.1 (180523) に更新したところ、修復をして開くことができるようになったが、別の端末では引き続き修復ができず、開くことができない。OneDrive for Business のバージョン履歴を利用しても 1.0 まで戻さなければ開けない状態で、開けていた時のバージョンには戻せない状況。

なお、端末によってはバージョンの更新によって動作が変わったこと、および、下記の Microsoft コミュニティに今回の事象と類似した投稿 (日本語のみ) があったことから、Office クライアントに起因する可能性がある。

<参考情報>
タイトル : Office 2016 for mac で「'XXXX.xlsx' の一部の内容に問題が見つかりました。」エラー
アドレス : http://answers.microsoft.com/thread/6c6eaedf-4c6b-4fd7-83e5-e98ba6232fd9

現在はローカル PC 内にファイルを保存するとファイルが開けるため、そちらで対処するが、大変不便であるため、改善してほしい。​

Currently, We are concerned that the Excel file may be unexpectedly corrupted then it cannot be repaired in some cases while using the Excel files on OneDrive for Business with Excel 2016 for Mac devices eventually.

In order to avoid this event, there is a way to restore and open the file by updating the version of Excel 2016 for Mac to 16.13.1 (180523). However, it is confirmed that another device cannot be applied a workaround even if you update the versions. In addition to this, you cannot open it unless reverting the version history to 1.0 even you use the version history of OneDrive for Business, also it is not allowed to revert to the version before file corruption.

Thus, we are assuming that this event occurs because of any bugs or misconfiguration of the system of the Office Client. Since the stable service is not provided to all devices, I found an article regarding the similar event in the Microsoft Community described below.

<Reference information>

-Title: "There was a problem with some content of 'XXXX.xlsx' in Office 2016 for Mac" error
-URL: https://answers.microsoft.com/ja-jp/msoffice/forum/msoffice_excel-mso_mac-mso_mac2016/office-2016-for-mac-でxxxxxlsx/6c6eaedf-4c6b-4fd7-83e5-e98ba6232fd9

We are currently using the method to open a file by saving them beforehand in the local PC as a workaround. For above reasons, we strongly hope this event will be mitigated and provides the stable service to use Excel files smoothly from Mac devices as well.

Thank you for your continued support.

I have been running OneDrive App on Mac OS El Capitan (10.11.6) for a couple of years without issue. It was last automatically updated on 8 May 2018 via Apple's Mac OS App Store. Today 20 May 2018 when I booted my MacBook, OneDrive app kept on crashing on loading. I uninstalled the app and then reinstalled via the Appstore, and same problem. I used CleanMyMac app to uninstall and remove all associated fiIes, deleted the OneDrive folded and reinstalled, and OneDrive sill crashes immediately after opening. I even downloaded the app via the Microsoft website and reinstalled, and still the same problem. The Mac OS crash report is included in the attached file. How do I get OnDrive app working again?

Regards,
Keith

When I open Word files using OneDrive for Mac, they open as local files, causing me to lose out on functionality that I would get if I had pointed Word directly to the online file (such as the ability to use the Share menu to share the file or collaborative editing capabilities).

Were I to open the same file from within Word by selecting Open, then going to my connected OneDrive account (not the local folder), then finding my file, I would get all of these nice online sharing features.

While I've only tested this with Word, I'm guessing that other Office365 apps (Excel, Powerpoint) have the same issue.

I have a local backup of my GMail made with gmvault. It's a folder with subfolders and files amounting to several hundred thousand files.

1. OneDrive stalls... my CPU starts working at 100% for several hours non-stop. I aborted it.

2. I decided to try and upload a single sub-folder with just 1000 files. After taking some minutes to process it, OneDrive started uploading them one by one, taking over 3 seconds per file. This makes it impossible for me to upload the GMail backup into OneDrive.

OneDrive should:

1. Be able to cope with a folder of hundreds of thousands of files;
2. Group small files and send them together to avoid unnecessary overhead.