Tell us the account you want to use to open _vti_rpc.

I just got a Windows Store update for Office Online.  I applied, I then went to Word and it had something to update, I did that.  Then I opened a docx, modified it, and closed Word with no pop-up.  I wonder if it is fixed.

Procedure:

1. Run Windows Store, select downloads and updates, click Get Updates.  I got an update for Office Online (9/13 at 15:10 time).  Let it install.
2. Open Word (for example), open a blank doc, select File, Account, Update.
3. Test for your pop-up.  With a quick test, I did not get it.

I just upgraded to the new Monthly Channel build:

Version 1708 (Build 8431.2070 Click-to-Run)

In this build Autosave has been greyed out and set to off, so the issue no longer occurs. So while I don't get the pop up anymore, the autosave functionality has been removed from the current build. So there is some progress!

In my case with this build yes, the Autosave has gone (I hope it comes back soon), but the popup still appears.

I just upgraded to the new Monthly Channel build:

Version 1708 (Build 8431.2070 Click-to-Run)

In this build Autosave has been greyed out and set to off, so the issue no longer occurs. So while I don't get the pop up anymore, the autosave functionality has been removed from the current build. So there is some progress!

Hello JBrasser! I thikn you found the solution.

I am not sure if my version was updated or not. I was having the problem with Word 2016 with that screen poping up all the time.

I went to Excel 2016 and on the top-left side I chose OFF the autosave button (as Word does not have that option but Excel 2016 does).

Then I returned to Word and was able to close and save my documents without that annoying screen appearing all the time!

I have recently noticed that this dialog box appears to also trigger sometimes when I attempt to open the PowerPoint file menu. But, for some reason, it is a lot more disruptive in PowerPoint, as the window cannot be closed and is completely non responsive. So far, in such situations, I have only been able to exit by terminating PowerPoint via Task Manager. 

Just to clarify, this non responsive version of the dialog has only appeared in PowerPoint so far. I do see the box in Word/Excel but they can always be closed in such situations.

Running 8326.2096 Office 365 ProPlus with personal and school OneDrive configured. (The file in question is stored in personal OneDrive)

Just a reminder - in my experience:  When it requests your login, you can simply exit the pop-up (X) and it will go away and the file will be stored as expected (OneDrive).  Check with Windows Explorer for date and time.  This is my experience - 100% of the time.   Therefore, I have not downgraded - I just live with it for now, hoping for a fix in the next release.

Certainly if you want to get rid of this annoying pop-up you could downgrade but that might reverse some security patches.

For me, it appears that if I exit one time, the pop-up does not return until a reboot.

Again: Win 10 Pro, Office 2016 (not 365).

Just a thought..

scott

That's what I've been doing too; least hassle and seems to be risk-free.  Indeed it seems to be related to a login on another machine.  Now waiting until there will be a fix....