```html
If you see an error message such as "The selected user account does not exist", it means you are trying to sign in with an email address that has not been granted access. This usually happens for one of the following reasons:
Image
Access is always granted to a specific email address. Unless otherwise agreed, this is the email address you used when contacting us.
Image
Other accounts may also have been used on your device, such as your personal or work account. When you open the link, Microsoft may suggest signing in with one of these Microsoft accounts.
We recommend clicking "Use another account" (shown at the bottom of the screenshot).
We recommend clicking "Use another account" (shown at the bottom of the screenshot).
Image
You will know you are in the right place when the page asks you to enter your email address.
Enter the email address that has been granted access.
You will receive a code by email. Enter this code on the next page to access and edit the shared file.
You will receive a code by email. Enter this code on the next page to access and edit the shared file.
Image
```