How to Fix Gmail IMAP Error 78754 on Outlook? – Appuals.com

microsoft outlook is a part of the microsoft office suite that helps the user to manage their personal information. it is an email client for primary use but it also includes features like calendar, contact manager, task manager, etc. for the user to program his daily life.

The 78754 Failure is a Microsoft Outlook web log-in error experienced by an individual when the user tries to access his/her Gmail account. An IMAP glitch causes the mail server to forcibly shut out a client while it was trying to gain access to the user emails through the Microsoft Outlook platform.

this error usually appears in cases; when the user’s login credentials are not recognized, when the user tries to access their account from a new device/location, when google detects a suspicious user login, when an app-specific password is required to start session, instead of the regular account password or any other similar situation. the error notification is displayed to the user as follows:

Before we proceed any further, you need to have some understanding of Internet Message Access Protocol (IMAP).

what is imap server?

imap is a standard email protocol platform that stores messages on a mail server and then allows the user to view, manipulate, and organize the emails as the user sees fit. messages stored on the mail server are originally stored on the user’s machine.

imap also allows the user to access all the main mail controls in multiple mail clients (outlook, mailexplorer, etc.) even on different devices, synchronizing everything in real time, that is, a user can configure his email account mail in microsoft outlook desktop client and outlook app for android/iphone at the same time.

what causes gmail imap error 78754 in outlook?

As already illustrated in the above case scenarios, this error can arise due to many reasons. the most reported are the following:

Solution 1: Re-verify your gmail login credentials

simply double check your login credentials to be correct in every possible way. if this is the source of the error, then this solution will probably work. therefore, it should be your first point of call. After confirming your login details, please perform outlook login verification using a pc or mobile device and the error should be resolved.

Note: Since Google protected passwords are case-sensitive, make sure to check your Caps Lock key to avoid any mistakes.

solution 2: enable imap and allow less secure apps in gmail

as explained above, imap servers are needed for microsoft outlook to work properly. therefore, it is essential to enable it. in case users have it disabled then they might face this error. you can enable it by performing the following steps:

1. Open the Gmail Log-in page from your web browser.
2. Log-in to Gmail with your account details.
3. On the top right corner, click the Gear Icon and select Settings from the drop-down menu.
   

   

4. Switch to Forwarding and POP/IMAP tab and select Enable IMAP right beside IMAP access.
5. Click Save Changes.
   

   

In addition to this, by enabling allow less secure apps, the user will be able to get rid of this error as sometimes google may recognize microsoft outlook client as a less secure application.

Note: Make sure you do not have 2-Step Verification enabled before enabling this feature because if you do have it enabled, this option will not be available to you with a ‘this setting is not available for accounts with two-step verification enabled. such accounts require an application-specific password to access less secure applications, as shown below.

1. While still logged in, navigate to Google Security page from your web browser.
2. Scroll down to find Less secure app access and click on Turn on access (not recommended) to enable this feature.
   

   

   Solution 3: Generate an app-specific password (if 2-Step Verification is enabled)

   as mentioned above, you cannot enable the allow less secure apps feature of google mail services if you have additional security verification enabled i.e. two-step verification. In this case, the user must generate an application-specific password before they can log in to their Microsoft Outlook client. follow the given procedure when doing so:

   1. Open the Gmail Log-in page from your web browser.
   2. Log-in to Gmail with your account details.
   3. While still logged in, navigate to Google Security page from your web browser.
   4. Navigate to Signing in to Google and click on App passwords.
      

      

   5. Confirm your sign-in again to proceed further.
   6. Click on Select app > Other (Custom name) .
      

      

   7. Type Outlook and hit Generate.
      

      

   8. This will generate an app password for your device. Copy the generated 16-character password.
      

      

   9. Use this password for signing into your Microsoft Outlook. This should fix your issue.

   solution 4: check microsoft outlook settings

   as mentioned above, fault 78754 can occur if microsoft outlook is not configured correctly. To make sure it’s configured correctly, follow:

   1. Click Start or press Windows key, search Outlook and hit Enter.
      

      

   2. Now enter your email address, click on Advanced options and check Let me set up my account manually and hit Connect.
      

      

   3. Select IMAP (for Windows 10 Operating System) or POP or Google on other Windows versions.
      

      

   4. Ensure that IMAP or POP access is turned on (It should already be done while following solution 2 steps) before attempting to add your Gmail account on Microsoft Outlook client.
   5. Use the given server information to configure your Microsoft Outlook client correctly.
      

      Incoming mail

      

      Outgoing mail

      

   6. You will be required to enter your log-in credentials. Put your correct information and click Connect. This should fix your error.

   Solution 5: Update your Microsoft Outlook

   As we know, sometimes an outdated window causes troubling errors that prevent proper functionality of windows applications and features. Likewise, any outdated app can behave the same way. Therefore, updating your email client (Microsoft Outlook) to the latest version might just fix your problem. If none of the solutions worked for you, this one should finally work. follow the given procedure to do it:

   1. Click Start or press Windows key, search Outlook and hit Enter.
   2. Navigate to File and click on Office Account.
      

      

   3. Click Update Options, select Update Now from the drop-down menu.
      

      

   4. This will automatically find updates for your Microsoft Outlook client and install them.
   5. To make sure you are updated to the latest version, you should see the following message when you repeat the same procedure.