質問集（FAQ）

What is BitLocker

• BitLocker is an encryption system that is installed in Windows. For example, if a computer containing important data is stolen by a malicious person, and even if the computer is disassembled and the parts storing the data are removed, the data encrypted by BitLocker cannot be read or written by anyone other than the original computer itself.
• In order to un-encrypt BitLocker and access the data, the "recovery key" generated at the time of encryption is required.

How to find the BitLocker recovery key

• In most cases, you can find the BitLocker recovery key by logging into your Microsoft account here.
• Your Microsoft account will be registered online when you start your computer for the first time in general.
• When you launch the Settings app and click Account -> User Information, the email address displayed in gray under the username in large letters is your Microsoft account. (You need to confirm this account name in advance.)

Frequently asked questions about BitLocker

• I'm suddenly asked for the recovery key after updating the device.
  
  • In rare cases, BitLocker may be enabled automatically by Windows Update. Please login Microsoft Account via website and confirm your recovery key.
• I am asked for the recovery key when I start up my PC immediately after returning it from repair.
  
  • BitLocker is managed using a chip installed in the logic board on a PC. Therefore, if the logic board has been replaced due to repair, you will need to enter the recovery key for authentication.
• I just can't find my recovery key or Microsoft Account.
  • If you can not find your recovery key or Microsoft Account, there is no option to recover your data.
    If your PC does not contain important data or if the data is located on cloud service (e.g. OneDrive), please consider initializing your PC.
  • If you have some trouble on Microsoft Account, please contact Microsoft.

The iOS version of Office is not exactly the same as the PC version of Office.
Please use the PC version of Office for functions that are not available on the iOS version.

You need to install Office 365 for iOS from Appstore.

When the app installed on iOS is first launched, sign in using your university account and the app is available.

Exapmle of mail address to sign in is "aa00000@sic.shibaura-it.ac.jp".

You can only use office on the latest three versions of macOS.

Currently, there are three OSes that can use office: "Big Sur", "Catalina", and "Mojave 2(as of March 2021). If you are using an OS other than these, you will need to update.

MS365のWordやExcelが、「サインインする必要があります・・・」とポップアップが表示され保存できない場合は。

PCの所有者が個人のOneDriveと学校のOneDriveのアカウントを二つインストールしており、競合が発生している可能性があります。

ライセンスのある学校のOneDriveのみを共有する設定にすると解決します。

方法は、

1. ツールバーの右端にあるOneDriveのアイコンをクリック
2. 設定を開く
3. Officeを開く
4. 「Officeアプリケーションを使用して、開いている・・・」のチェックを個人アカウントの場合は外し、
   校用のほうは入れておく
5. Wordなどに戻って保存できることを確認