Gmail Error 78754 Outlook: Eliminate This Error With Proven Techniques

Gmail error 78754 Outlook is a web log in error which generally occurs when the password of any user is not recognized. 

Once this error occurs, you fail to login to your Gmail account and suddenly an error message pops up on the screen which alerts you.

So, if you experience this problem and want to get rid of it immediately, then focus on the rest of the article.

As here we are going to discuss almost each and everything which will surely make your task easier and resolve this error.

Probable Causes Which Lead to Gmail Error 78754:

The Gmail error 78754 Outlook can be caused for any of the following reasons.

  • When  Google identifies a different sign-in on your account, 
  • The password entered by you is incorrect
  • You are trying to log in by using a different device or from a new location
  • Improper IMAP settings
  • Outdated email client

Now, have a look at the effective resolving techniques in order to eliminate the flaw.

Resolve Gmail Error 78754 Outlook with Some Amazing Solutions :

Listed below are some of the practical solutions to fix this Gmail error. So go through them one-by-one.

Solution 1- Check the Settings of your Gmail Account

At first, we suggest you check the settings of the Gmail account. To apply this solution on your device, go through the undermentioned steps.

Step 1

In the beginning, log in to your Gmail account. 

Step 2

Next, tap on the gear icon which might be located at the top right-hand side. Here, you can see a lot of options. From there, you should click on the Settings option.

Step 3

Now, click on the Forwarding and POP/IMAP option. Then, you have to enable the Radio button present next to IMAP.

Step 4

Then, click on the OK button to save the changes. Thereafter, type ‘’ within the Address bar.

Step 5

Ensure that you are still logged in. Then, drop down the page and mark the dialog box present beside the ‘Allow less secure apps’ option. 

Finally, exit from the page and reboot your computer and reopen the Gmail account. Then, check if the issue has been resolved or not. If not, then go after the next solution.

Solution 2- Reconfigure MS Outlook Account

Outlook error 78754 can be caused if your Outlook account is not configured properly. To solve this error, follow the given below steps. 

Step 1

At first, navigate to the Add account. Under this section, you need to click on the Manually configure server option.

Step 2

Thereafter, click on the Next button and select the Choose POP or IMAP option. 

Step 3

Then, you have to fill up the user details and login information. 

Account Type: Select POP or IMAP

Outgoing Server:

Incoming Server:

Step 4

Now, press the OK button to eliminate the Gmail error 78754 Outlook. Then, navigate to the Outgoing Server tab and click on the ‘My outgoing server (SMTP) requires authentication’ option.

Step 5

After that, proceed to the Advanced tab and put the port number for the Outgoing Server: 465.

Tap on the OK button to and after that, press the Enter key. 

Finally, Microsoft Outlook has been launched and then try to open your Gmail account without this troublemaking error code.

Solution 3- Check if Two-step Verification is Turned On, then Create an App-specific Password

If you have already applied the above two solutions and none of them work for you, then do not panic. Here is another alternative at your rescue.

In case, you have enabled the two-step verification on your Gmail account, then you must create an App-specific password before login on any email app.

Now, to create an Application-specific password, go through the cited below steps.

Step 1

At first, you have to log in to your Google mail account. 

Step 2

Then, navigate to the ‘Sign-in and Security’ section and from there, you have to scroll down and click on the ‘Signing in to Google’ option.

Step 3

In case, two-step verification is enabled, then tap on the arrow and follow the prompt. 

Step 4

Once the two-step verification procedure completes, then go ahead to create an app-specific password. 

Step 5

Now, tap on the arrow for App Passwords. Then, verify your account with the help of the two-step verification and thereafter, click on the Others option.

Step 6

Next, click on the Generate option. After tapping on the Generate option, the password will then come up. 

Step 7

Then, what you need to do is to open the Outlook and set up the proper server. Use the application- specified password that is already generated. 

At this point, Gmail error 78754 Outlook should be fixed.

Solution 4- Enable IMAP and Allow the Less Secure Applications Associated with the Gmail account

If all the above solutions fail to fix the problem, then here is another solution for you. 

To enable IMAP, take a look below.

Step 1

At first, open the web browser and enter ‘’ in the Address bar. 

Step 2

Then, sign in to the Gmail account with details. Next, navigate to the top-right corner and tap on the Settings icon.

Step 3

After that, tap on the ‘Forwarding and POP/IMAP’. Next, you have to click on the ‘IMAP Access’ and choose Save Changes from the available options.

Step 4

Then, type ‘’ in the URL bar. After that, you have to locate the ‘Allow less secure apps’ and click on the Turn on button to enable it.

Step 5

Next, try to log in into the Microsoft Outlook and now the issue should be fixed.

Solution 5- Update the Email Account ( Outlook )

This is the last solution that you can apply to fix the problem. So, at first, navigate to the Tools menu.

After that, choose the Email accounts. Then, select the ‘View or change existing e-mail accounts’ option. 

Next, click on the email account and after that, you have to choose your email account from the available list. Further, tap on the ‘Update Mail Servers’ option.

Tap on Finish to save the changes. 

Concluding Section

A user might face error while accessing a Gmail account. One such error statement is Gmail error 78754 Outlook

There are various approaches to solve the problem and these have been described in this write-up. Also, it is advised to keep the backup of Gmail data in case of Gmail downtime.

Moreover, if you still find this error code in your Gmail account, then come in contact with a professional to eliminate this particular error code.

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