Users of Office 365 online applications may experience frequent and annoying downloads of a file called “TokenFactoryIframe” when accessing their account through a web browser. While Microsoft hasn’t released a fix yet, and it’s not the first time it’s happened, there is a way to stop downloads.
According to users on a Microsoft support forum, the issue primarily occurs with Safari on Mac, but it can also affect Chrome and Firefox on Mac, iPhone, or iPad. Since the issue occurs across multiple browsers and platforms, this may mean it’s an issue with Outlook that Microsoft needs to fix. According to a post from a Microsoft representative, the company is “investigating on our behalf to see if we can find relevant information about the issue.”
The workaround is to stop Office 365 downloads. The problem with this workaround is that it prevents all downloads from working. For example, if you use Outlook for email and you want to download an attachment, you can’t download it until you change your settings back to allow downloads. Below are the steps to stop downloads in Safari and Chrome.
How to stop Office 365 downloads in Safari for Mac
In Safari, click the Safari menu at the top and then select preferences.
In the General column on the left, select downloads.
The window on the right will display a list of websites with download permissions. Seek outlook.office365.com and select Deny in the pop-up menu on the right. (If you select Ask, a pop-up menu will continually appear asking if you want to download the file. With this problem, it asks for a download once every few minutes.)
Note: This will stop all Outlook downloads, so when you need to get a file from an email, you’ll need to temporarily enable downloads.
How to stop Office 365 downloads in Chrome for Mac
In Chrome, click the Apple menu, and then select preferences.
In the left column, select Privacy & Securityand in the “Privacy and security” section of the main window, select Site Settings.
If you see office.com in the Recent Activity section, click it. If not, click View permission and data storage across all sites and then click office.com.
When you click on office .com, it should expand. Find “www.office.com” and click on its arrow on the right side.
A list of permissions will appear. Seek automatic downloads and select Deny in its popup menu.
What is a TokenFactoryIframe file?
iFrame is a method used by websites to present content. For example, iFrame is often used when embedding a YouTube video on a website. This is a widely used element, although it is not known why Office 365 automatically downloads the TokenFactoryIframe file. This particular file is zero kilobytes in size and doesn’t seem to contain anything. It could be a bug in the HTML of the Office 365 website and is probably not malicious.