In Microsoft Outlook 2016 for Mac, you are repeatedly prompted for authentication while you're connected to your Office 365 account. This issue occurs because of the presence of duplicate tokens in the keychain. To resolve this issue in Outlook 2016 for Mac, install the February 2017 Outlook update (version 15.31.0) from the.
Office 365 keeps prompting for login credentials within Mac OSX? I came across a problem where a client of mine had bought and installed Office Suite 2016 she than upgraded to Office 365 Business Premium. Oct 18, 2018 If Outlook keeps asking password for shared mailbox, we can test the AutoDiscover feature which is related with shared mailbox. While Outlook is running, press and hold down the CTRL key, and then right-click the Outlook icon in the system tray or notification area on the lower-right corner of the screen.
When you try to create an Outlook profile or connect to a Microsoft Office 365 mailbox, you're continually prompted for credentials while the client displays a 'trying to connect..' message. If you cancel the credentials prompt, you receive the following error message:
The connection to Microsoft Exchange is unavailable. Outlook must be online or connected to complete this action.
If you are an Office 365 subscriber, you'll also receive the newest features and tools. Check for updates and install. Open an Office app such as Word, then on the top menu, click Help Check for Updates. If you don't see Check for Updates, run the latest version of Microsoft AutoUpdate tool, then check for updates. As new major versions of macOS are released and older versions become unsupported, we highly recommend you continue to update your macOS to a supported version in order to receive mainstream support such as security updates as well as new features (if you’re an Office 365 for Mac subscriber). This applies for both Office 365 for Mac. Mac update os now microsoft features don't work. Mar 13, 2014 I updated OS on my Mac and now Microsodt Office 365 won't work Hi, I allowed my Mac to install an OS update and now Microsoft Office will not work. Every time I click on Word, it comes up with a screen saying I need to sign in or enter the product key.
This issue can occur if the Logon network security settingon the Security tab of the Microsoft Exchange dialog box is set to a value other than Anonymous Authentication.
Note
Microsoft Outlook 2016 and some recent builds of Outlook 2013 are not affected by this issue. Those versions have been updated to prevent the problem that is described in the 'Symptoms' section. These versions have the Logon network security setting disabled or removed from the Microsoft Exchange email account settings.
You may be an Office 365 customer who is experiencing the error that is described in the 'Symptoms' section when you try to connect to an Exchange Online mailbox. You may also already be running newer versions of Outlook 2013 or Outlook 2016. If both conditions are true, we highly recommend that you use the Outlook keeps asking for my password diagnostic to troubleshoot issues in which Outlook continually prompts for a password.
This diagnostic does automated checks and returns possible solutions for you to use to try to fix any detected issues.
If you are connecting to an Exchange On-Premises mailbox, see the following articles for additional troubleshooting:
Additionally, you can view the following forum thread for common causes:
If you have an older version of Outlook, change the Logon network security setting to Anonymous Authentication to fix this issue. To do this, follow these steps:
Exit Outlook.
Open Control Panel, and then do one of the following:
In Control Panel, locate and double-click Mail.
Click Show Profiles, select your Outlook profile, and then click Properties.
Click E-mail Accounts.
Select your email account, and then click Change.
Install microsoft office free mac 2017. In the Change Account dialog box, click More Settings.
In the Microsoft Exchange dialog box, select the Security tab.
On the Login network security list, select Anonymous Authentication, and then click OK.
Click Next, click Finish, and then click Close on the Account Settings dialog box.
Click Close on the Mail Setup dialog box, and then click OK to close the Mail control panel.
To locate and view the registry setting for Anonymous Authentication in the Outlook profile, follow these steps.
Important
Modifying the Outlook profile by using the 'Profiles' registry path is not supported and may cause your Outlook profile to be in an unsupported state.
Important
Follow the steps in this section carefully. Serious problems might occur if you modify the registry incorrectly. Before you access it, back up the registry for restoration in case problems occur.
Open Registry Editor. To do this, do one of the following:
Locate the following registry path, as appropriate for your version of Outlook:
For Outlook 2013
HKEY_CURRENT_USERSoftwareMicrosoftOffice15.0OutlookProfiles
For Outlook 2010 and 2007
HKEY_CURRENT_USERSoftwareMicrosoftWindows NTCurrentVersionWindows Messaging SubsystemProfiles
Under this subkey, locate and expand the name of your Outlook profile.
Under the profile, locate and expand the 9375CFF0413111d3B88A00104B2A6676 key.
Under the 9375CFF0413111d3B88A00104B2A6676 key, you see a subkey for each account in your profile. Select the first subfolder (00000001), and then examine the data of the Account Name binary value by double-clicking the value. Repeat this process until you find the Account Name value that includes your SMTP address. For example, the Account Name value points to **guidopica@contoso.com** under the 00000003 subkey.
Under the 0000000x subkey, locate the Service UID binary value. It represent a GUID (for example, c3 d1 9a 7b 80 1b c4 4a 96 0a e5 b6 3b f9 7c 7e).
Locate the subfolder in your profile that matches the GUID value that's identified in step 6 (for example, c3d19a7b801bc44a960ae5b63bf97c7e).
Under the subkey that you found in step 7, examine the 01023d0d binary value. It represents a GUID (for example, 5f cf d5 f1 ba 5c 6f 45 b3 57 cc 5e 0d 16 94 58).
Locate the subfolder in your profile that matches the GUID value that's identified in step 8 (for example, 5fcfd5f1ba5c6f45b357cc5e0d169458).
Under the subkey that's found in step 9, examine the value of the 00036619 binary value. This value determines whether Outlook is using Anonymous Authentication.
Binary: 00036619
Data: 01 f0 00 80Anonymous Authentication
Any other value represents an authentication method other than Anonymous.
After you or your Mac administrator resets the password of your macOS user account, your Mac might ask you to update your keychain password or enter the password of your login keychain. It might also tell you that the system was unable to unlock your login keychain. That's because your login keychain is still using your old password.
If you don't know your old password, the solution is to create a new login keychain.
If you know your old password, use that password to update your existing login keychain: