How can I prevent Chrome from blocking a XLSX download?

Seems to be resolved now, via some silent update.

We had a similar problem earlier today. Our web-site uses TAR files for exchanging data (upload/download). HTTPS is used for all communication. The files are stored on S3 and the user is redirected to S3 to download the file. This setup has been working fine for the last couple of years.

Suddenly, this morning around 11:20am (Eastern Time) most of the users started to experience download issues -- the downloaded files were blocked by Chrome. This happened in Chrome only and on multiple platforms (Windows and MacOS, we don't have any Linux users). The issue was reported by multiple users, most of the users in fact. Upgrading from v83 to the latest v84 did not help.

Then around 12:50pm (1.5 hours later), the issue was gone. 10-20 minutes later, it appeared again. It seems that the issue is gone again.

I have been running my Chrome (v83) non-stop since yesterday. During the first "wave" I was constantly experiencing this issue than constantly not seeing it at all. Then the "second wave" began, and I started seeing it again, and now it is gone.

For those following this live, the Chromium team is tracking and fixing this: https://bugs.chromium.org/p/chromium/issues/detail?id=1106858

Comment 8 by [email protected] on Fri, Jul 17, 2020, 2:42 PM EDT We're in the process of rolling out a fix for this issue so if you try now, it's likely you won't see a warning. If you still do, please try again in approximately 30 minutes.