12-13-2017 11:21 AM
12-13-2017 11:21 AM
Some users report this error message in Outlook 2016. Unable to determine the root cause of the message. Information on the error code is next to none. Any thoughts...?
12-13-2017 11:36 AM - edited 12-13-2017 11:37 AM
I have done a quick search about that error code and it seems that somebody has already had a similar issue. It seems that Outlook thinks that you are disconnected from the internet.
Here is the link to the original thread: "https://goo.gl/3Wr2F8"
01-23-2018 08:58 AM
After extensively working with Microsoft Support engineer, we determined that it was an external DNS issue. As the error is intermittent at times. When the pop-up was present, other Microsoft URLs would not resolve. Prime example was https://login.microsoftonline.com, but https://outlook.office365.com would. Other websites and Office 365 services are unaffected. We were not able to determine if the DNS issue was with the local Internet provider or a global provider. It's not much to go on, but somewhere to start.
01-29-2018 11:04 AM
I was getting this same Pop-up, and I was able to fix it by running the office365 diagnostics tool:
The diagnosis was invalid cached credentials, and the tool automatically cleared credentials and restarted outlook.
I recently updated office on my laptop - so credentials may have been cached since before that, resulting in the failure. That's mostly guessing at a cause though.
04-13-2018 06:35 AM
07-18-2018 12:23 PM
I have the same issue when trying to add an Office 365 account :
followed by this error message:
Unable to add the account. I tried the support tool but with no success.
Can you please describe ste steps you perform using the tool? There is a lot of options...
10-31-2018 05:23 AM
Refer to this article as well for Symptom 4.
10-31-2018 12:41 PM
Hi, i had the same problem and corrected it like this:
Access the following registry path
Add a new entry of type REG_DWORD with the name EnableADAL with value 0
Remove the DisableADALatopWAMOverride entry if it exists.
Automatically when opening the outlook it will open the popup requesting user and password.
03-30-2019 10:52 AM - edited 03-30-2019 10:57 AM
@Alex MelchingThanks for linking that article; it gave me the clue I needed to solve this problem.
Configuring Windows 10 to access the Internet through a local proxy server (such as Privoxy) creates issues for Universal Windows Platform apps, which by default are forbidden from opening a network connection to the local machine. This includes the Azure Active Directory (AAD) broker plugin used by Office applications to perform authentication, which is effectively blocked from accessing the Internet when a local proxy is in use.
The solution in this scenario is to use a tool like Tiago Andrade e Silva's Loopback Exemption Manager to explicitly grant permission for this plugin to access the local machine, thereby allowing it to connect to the proxy server and, through it, the Internet. Once I added an exemption for the AAD-broker plugins on my computer I was able to sign into my Office account again and use Outlook without the "0xCAA70007" error code reappearing.