Can't connect to Exchange / Office 365 / Outlook

I'm not able to connect my Exchange account. What might be the issue?

Unfortunately, we don't sync with certain Office 365 plans, like Business and ProPlus since they don't support contact sync.

Also, certain Exchange domains with extra security layers or other unusual configurations may not be supported.

If none of the above mentioned applies to your account, you have to enable two-step verification via the Microsoft Authenticator app. Then, create an app password for Contacts+ and enter it as your password when reconnecting your Exchange to Contacts+.

How to identify Exchange Username / Domain / Password?

If you’re having trouble connecting your Exchange server to your Contacts+ account, you’ll need to check the following:

A) Your Exchange usernamedomain, and password


B) Your Exchange email address and password

However, unfortunately, we don’t have the ability to determine which one you need to use; you’ll need to determine if you need to use your Exchange username + domain or your email + password. Using the wrong one simply gives the same result as mistyping your password.

Unsure whether to use your Exchange username + domain or your email address + password?

Follow this logic:

  1. If you know for certain that you need to use your email address + password, simply use your email for identification and leave the username / domain fields blank.
  2. If you use a name like organization\jsmith to log into Windows or other parts of your company's network, you probably need username and domain authentication.
  3. If your email services are provided by a third party, you probably need email authentication.
  4. If you have previously connected other services or applications on a device (not connected to your organization's network) by only providing your email address and password, you probably need email authentication.

How can I find my username and domain?

Keep in mind that your username and domain do not necessarily correspond to the same concepts in your email address. 

For example, it is possible to have an email address of, but have a username of jsmith and domain of organization. If your username and domain do correspond to your email address (john.smith and in this example), Contacts+ will be able to guess this configuration and you won't need to provide it.

If you have previously used a name like organization\jsmith to log in to or access something in the same organization, then organization is your domain and jsmith is your username.

If you have only ever logged in with a simple name like jsmith, that name is probably your username. On a Windows system connected to your organization's network, you can find your domain by right-clicking on the start button, and selecting "System" or "System Properties.” If you see a line mentioning your domain, that is the value to give for your domain.

Caveat: there may be two items here, i.e. ORGANIZATION and—the shorter one is usually the one to use. If instead, you see a line indicating your workgroup, you likely do not need username and domain.

Last but not least, if you are unable to determine the domain yourself, you may need to ask your systems administrator or IT department for your active directory domain name.

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