

Autocomplete began popping up instead of dropping down. Could not find any answers on the internet.


Autocomplete began popping up instead of dropping down. Could not find any answers on the internet.
I'm IT guy, people at my work started coming to me with this 'feature'. MS should take care of this immediately. It's PIA.
is there an update when there will be a new fix? Its not as if I'm going to get everyone in our business to run this work around. Wonder which bright spark wanted to make the change.
I'm our companies IT guy, and my first user just reported this issue this morning. He was simply creating an email and typing the first few letters in the TO field and the list now POPS UP, instead of drops down.
Very frustrating. The user is using MS Office Home & Business 2019
Our users here don't normally complain but this one has caused a lot of complaints! I've had to roll back all Office 2019 users to an earlier version so they can scroll up to the top of the list again.
same Problem, do you have a Solution?
I have now a Workaround, i reverted back to older Version with:
"C:\Program Files\Common Files\microsoft shared\ClickToRun\OfficeC2RClient.exe" /update user updatetoversion=16.0.13901.20462
The accepted answer should not be for individual users to roll back to an earlier version to fix what Microsoft have broken.
I used this on two computers that had an issue and it resolved it.
Create a shortcut and run @ManuelMedina-0612 path above. Literally copy and paste into your shortcut.
Thanks Manuel and Alika! Works great and truly as easy as Alika laid out. Like everyone, wish they'd stop changing things that work well as-is.
Client experienced this issue just this morning. This has worked perfectly and very simply I might add. Thank you very much Manuel.
I have performed many tests on my Outlook 365, Outlook 2019 and Outlook 2016, but the auto-completed list could display dropping down normally. So what's the version of your Outlook client(File>Office account>About Outlook), please first ensure that you have updated to the latest version of Outlook client.
Does this issue occur only on your client, and whether other users in the organization could work normally? If it only occurred on your client, did this issue occurred only recently? If so, have you performed any specific operations before it(such as install any add-ins or programs), which may affect client functionality.
In order to avoid the interference of any add-ins, it's suggested to restart your Outlook client in safe mode to check if the issue has any difference(Windows + R > type "Outlook.exe /safe">enter)
If the issue still exists, considering corrupted Outlook client may also cause it, please try to repair your Outlook to check if it could work for you.
If that's invalid, please provide us with more information about your issues, so that I could perform more targeted tests and provide you with more suggestions.
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Waste of time answer blaming the users for not updating when the problem is the latest Microsoft update that has broken this.
That's all they do, day in day out, "turn it off and turn it on again", "it's you not us!".
Thank you for responding back @JadeLiang-MSFT
This occurred recently. I am the only client experiencing the issue. I've checked updates and there is no other updates available for my Outlook.
Microsoft® Outlook® 2019 MSO (16.0.13929.20222) 64-bit
Safe mode. Same issue.
I completed an online repair before testing this issue in Safe Mode.

Jade, so far two users with the issue
MS ofc 2019 Home & Office install
roll back offered worked to resolve the issue
User 2 - waiting to connect and try the same.
Thank you for responding back @JadeLiang-MSFT
This occurred recently. I am the only client experiencing the issue. I've checked updates and there is no other updates available for my Outlook.
Microsoft® Outlook® 2019 MSO (16.0.13929.20222) 64-bit
Safe mode. Same issue.
I completed an online repair before testing this issue in Safe Mode.

Hi,
I and my colleagues have got the same issue only after updating to Microsoft Outlook 2016 MSO (16.0.13929.20222) 64 bits I found out that if you pop-out the email then this list dropdown instead of popping up
Edit: Well, nevermind.. It seems to be random, sometimes it pops up and sometimes it drops down, it can even be different in the same email on different inputs.
Also there is no scroll bar so even if it drops down like before you can't use it properly, a part of the results are out of the screen.
Office 2019, Outlook 2019 Version 2103 (Build 13901.20462 Click-to-Run) – Does NOT have this issue

Office 2019, Outlook 2019 Version 2104 (Build 13929.20296 Click-to-Run) – Has this issue
No Scroll bar
pops up or down according to window screen position
NOBODY needs/uses the image of their contacts in a corporate environment, this just wastes screen space and the extra padding is just not needed

This exactly. Why have Microsoft chosen to make this functionality non functional?
I found out it's a known bug in the latest update related to the registry hack that enabled the older Outlook 2013 style autocomplete that's causing it to pop up instead of dropdown. The workaround is to delete or rename the offending key and restart Outlook, or revert to an older Outlook build.
Offending registry entry (delete or rename), then restart Outlook:
HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\Options
DWORD: DisableAutoCompleteUpdate
Details here: https://www.slipstick.com/outlook/autocomplete-opens-upward-outlook
As documented in that article though, that fix would only work on Office 365. On Office 2016 and 2019 the only workaround is to rollback to previous build. I am not sure how they know for sure that "Microsoft is aware of the problem", I would like to see a KB article about this, but I sure hope they are aware and working on a new build.
Thank you for the correction. I guess I just glossed over the fact this only works for O365 Outlook.
I didn't test the key in 2016 perpetual - only 2019 and 365 - but if the key is not set, then it's not the issue. Outlook 2016/2019 already use the simple autocomplete list so no need for the key.
I reported it to Microsoft support when I first started seeing it in the Answers forums. Support could not repro it and no one called support about it, so no support case. After I repro'd it using the registry value, they told me they opened a bug report for it and are investigating it.
At this time, if the issue is not from the registry key, the only fix is to rollback. As soon as they figure out what is wrong, I expect a fix will be pushed out - possibly just a silent update to disable something. (a 'can't read calendar' bug a few weeks ago was fixed this way.)
ETA: if it is a silent update, it will be downloaded overnight or when the computer reboots and installed when outlook is started/restarted.
What helped me is: Rollback like ManuelMedina instructed and disable automatic updates in Office 2016 / 2019 for now.
(In Office: File, Account, Update Options, Disable Updates)
Hi all,
First of all sorry for the inconvenience caused to you.
As I know, this is a known issue on latest version of Outlook 2016 and Outlook 2019--Version 2104 (Build 13929.20296), the current workaround is to delete/rename this value:
HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\Options\DisableAutoCompleteUpdate
But according to my research, it could work for some clients, but some couldn't, please kindly check if it could be helpful to you.
If that's invalid, considering it could work normally on previous version, as another workaround, it's suggested to disable auto-update and revert your office version via command like below:
C:\Program Files\Common Files\microsoft shared\ClickToRun\OfficeC2RClient.exe" /update user updatetoversion=16.0.13901.20462
I will continue to monitor it in latest version of Outlook client, and if there are any updates, I would post back. Also welcome other users who has any updates post here :)
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You forgot the Quote, JadeLiang...
"C:\Program Files\Common Files\microsoft shared\ClickToRun\OfficeC2RClient.exe" /update user updatetoversion=16.0.13901.20462
Thanks @JadeLiang-MSFT - yes it seems this is only applying to users who previously used the registry workaround of adding the HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\Options\DisableAutoCompleteUpdate with a value of 1
by deleteing that key from the registry the list now 'drops down' but once again only shows 5 entries and no scroll bar - does anyone have another fix for this situation so that users can find more than 5 'john' in their list if they frequently email more than 5 of them?
thanks in advance.
I have the autocomplete popping up and have never had the disableautocompleteupdate registry setting on the system. It is compounded for me in that whilst the new look autocomplete is onscreen, Outlook is running very slowly and periodically hanging for 15-20 seconds.
Just going through reverting to the previous version to try that now.
Hi all,
Here are some updates about this issue:
This issue is fixed in Version 2104 Build 13929.20386.
I have tested on this version, it could work normally there, please kindly update your Outlook to check.
I am using Office 2016 and I simply did a full uninstall of Office and then reinstalled to fix autocomplete issue. Found nothing else that worked.
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