Outlook 2016 not able to attach. Attach file menu disappear immediately after click on it. 

Solution :


Close and exit Outlook. Go to Control Panel, depending on what view you have it set to. Mine is small icons (upper right corner).  

Open Credential Manager and look for 3 MicrosoftOffice16_Data...  entries under Generic Credentials. 

Open each one and "Remove from vault".   These entries will recreate next time you enter Office. 

Open Outlook and now you should be able to attach.   Hope it works !

Create windows 7 bootable install USB stick

You will need:

1. PC running Windows XP/Vista/7/8
2. Windows 7, 32/64-bit (depending on the system) installation disk
3. USB drive with at least 8GB of free storage

Preparing the USB drive:

1. Open command prompt as administrator - Right click on Start > All Programs > Accessories > Command Prompt and select Run as administrator or type cmd in the Start search bar.
2. Run diskpart utility by typing diskpart into command prompt window and pressing “Enter”.
3. Locate your USB drive disk number by executing list disk. We'll assume the USB drive is 1.
4. Run the following commands:
   1. select disk 1
   2. clean
   3. create partition primary
   4. select partition 1
   5. active
   6. format fs=NTFS
   7. assign
   8. exit

Now we have prepared USB drive. Lets make it bootable:

1. Insert Windows 7, 32/64-bit installation disk into DVD drive. Let's assume it's D
2. Go to D:\boot (cd d:\boot)
3. If your USB drive letter is “e” please run bootsect /nt60 e:
4. Copy DVD Windows 7 media content to USB root folder (etc. don't put it into any folder)

You are now ready to install Windows 7 from USB flash drive!