Fix Gmail Error 78754 on Outlook


Gmail Error 78754 is a common issue that can occur when trying to access your Gmail account through Outlook. This error can be caused by a variety of factors, including incorrect server settings, incorrect account information, or a corrupted Outlook profile. Fortunately, there are a few simple steps you can take to fix this error and get your Gmail account working again. In this article, we will discuss the causes of Gmail Error 78754 and provide some tips on how to fix it.

Fix Gmail Error 78754 on Outlook

1. Check your internet connection: Make sure your internet connection is stable and working properly.

2. Check your Outlook settings: Make sure your Outlook settings are correct and up to date.

3. Check your Gmail account: Make sure your Gmail account is active and working properly.

4. Check your firewall settings: Make sure your firewall settings are not blocking the connection between Outlook and Gmail.

5. Check your antivirus settings: Make sure your antivirus settings are not blocking the connection between Outlook and Gmail.

6. Clear your browser cache: Clear your browser cache and cookies to ensure that the connection between Outlook and Gmail is not being blocked.

7. Update your Outlook: Make sure you have the latest version of Outlook installed.

8. Contact Gmail support: If all else fails, contact Gmail support for further assistance.

Fix Gmail Error 78754 on Outlook

Outlook is Microsoft software meant for managing personal information. From features like calendar, files, and contacts to accessing Microsoft mail, Outlook is a multifaceted application. While logging in to Outlook Gmail on the web, users have encountered Gmail IMAP Error 78754. This error results in the automatic shutdown of the application when a client tries to access their emails on the Outlook platform. If you are someone going through the same trouble of being unable to log in to your Outlook account then you are in the right place. We bring you a perfect guide that will help you thoroughly in knowing a great deal about the 78754 error, its cause, and methods to fix Gmail error 78754 Outlook. So, let us get started with learning about the error in this article.

Fix Gmail Error 78754 on Outlook

How to Fix Gmail Error 78754 on Outlook

Internet Message Access Protocol helps to access emails for the users from a mail server with TCP or IP connection. The messages read via the portal are stored on the mail server which can further be organized on the device. IMAP is accessed via the internet and can be used on any device. This feature allows users to read their mail from any device at any given time.

It is a fast and convenient way to keep a record of all the messages sent. Also, it helps in downloading the messages when clicked on without an additional need for downloading. Another great thing about IMAP is that it can be used offline, giving a great benefit to the users.

What Causes the 78754 Error?

Not just one but there are multiple reasons why 78754 failure appeared while accessing Outlook mail. Let us discuss these reasons in brief below:

  • Incorrect log-in credentials are one of the common reasons behind the error to happen.
  • Suspicious log-in is another cause of the error, when Google detects a doubtful activity while attempting log-in, a 78754 error pops up.
  • Two-step verification is meant to provide extra security to your account, but it can also be a hindrance when opening your Outlook account.
  • Accessing the account from a different location or device can also be behind it.
  • Disabled IMAP or incorrect IMAP server settings can also be a cause.
  • Outdated Outlook application is another one of the major reasons to interfere with the mail service opening up.
  • One of the many reasons can also be incorrect Outlook configuration.

Now that you have covered the subject of the reason behind Gmail error 78754 Outlook, it is time to know what can be done to resolve it, so, let us start with some of the most sought-out and ordered methods:

Method 1: Verify Gmail Log-in Credentials

The basic mistake that most users tend to not pay attention to is incorrect credentials while logging into the Gmail account. If these are wrong, they can most probably restrict you from accessing your Outlook account. Therefore, ensure you check the log-in details closely.

Check Gmail log in credentials

Method 2: Enable IMAP and Allow Less Secure Apps

To experience smooth and undisturbed Microsoft Outlook processing, the IMAP server must be turned on. Disabling it can be a reason why you are facing 78754 failure on your system. Let us look at steps that can help us to turn IMAP on and allow less secure apps so that Google does not recognize Microsoft Outlook as one:

Note: Less secure app setting is not available for two-step verification-enabled accounts.

1. Open Gmail log-in page on the web.

2. Fill in the credentials and log in to your Gmail account.

Fill the credentials to open Gmail account

3. In the Gmail account, click on the gear icon and select See all settings from the menu.

Select See all settings. Fix Gmail Error 78754 on Outlook

4. Select the Forwarding and POP/IMAP tab and select Enable IMAP.

Select Enable IMAP

5. Select Save Changes at the bottom.

Select Save Changes. Fix Gmail Error 78754 on Outlook

6. Next, locate Allow less secure apps option and turn it on.

You can follow the next method to configure Microsoft Outlook if Gmail IMAP Error 78754 still persists.

Also Read: How to create a Gmail Account without Phone Number Verification

Method 3: Configure Outlook

If your Microsoft Outlook account is not properly configured, it can also lead to 78754 error, Therefore, using the following steps, configure your account correctly.

1. Press the Windows key, type outlook and hit the Enter key.

Open Outlook

2. Enter your email and select Advanced options.

3. Select Let me set up my account manually option and select Connect.

4. Select IMAP, POP, or Google.

5. Make sure that IMAP or POP servers are turned on.

6A. Use, Server: imap. gmail. Com, Port: 993, Encryption method: SSL/TLS, Require logon using Secure Password Authentication (SPA): Unchecked for Incoming mail.

6B. Use, Server: smtp. gmail. com, Port: 465, Encryption method: SSL/TLS, Server timeout: one bar, Require logon using Secure Password Authentication (SPA): Unchecked, My Outgoing (SMTP) server requires authentication: Checked, Use same settings as my incoming mail server: Checked for Outgoing mail.

7. Click Next.

8. Once you have completed all these steps, fill in your log-in credentials and click Connect to continue.

Method 4: Update Microsoft Outlook

An outdated Microsoft Outlook account is another reason which pushes Gmail IMAP Error 78754 to pop up on your screen while signing in to your account. So, update the application to its latest version:

1. Launch the Outlook app.

Open Outlook. Fix Gmail Error 78754 on Outlook

2. Click on the File tab.

Click on File. Fix Gmail Error 78754 on Outlook

3. Select Office Account from the side menu.

office account

4. Click on Update Options and select Update Now.

5. Once your Outlook application is up to date, try logging in to it again and see if 78754 error is resolved.

Also Read: How to Turn Outlook Email Read Receipt On Off

Method 5: Generate App-specific Password

2-step verification is extremely essential to secure your accounts, especially your Gmail account where all the important emails, files, and data are stored. If you have enabled two-step verification for your account already then generate an app-specific password for Outlook. This will certainly help you with Google blocking the less secure apps like Outlook on your system and eventually will help you with Gmail error 78754 Outlook.

1. Log in to your Gmail account.

Fill the credentials to open Gmail account. Fix Gmail Error 78754 on Outlook

2. Navigate to Google Security Page in the browser.

Navigate to Google Security Page. Fix Gmail Error 78754 on Outlook

3. Locate App passwords and click on it.

Open App passwords

4. Enter your password to verify your account and click on Next.

Enter your password and click Next. Fix Gmail Error 78754 on Outlook

5. Click on Select app and choose Other.

Click on Select app and choose Other

6. Enter Outlook and click on GENERATE.

 Enter Outlook and click on GENERATE. Fix Gmail Error 78754 on Outlook

A new automated password will be generated for the Outlook application on your system. You can copy this password and save it for future logging into your account without encountering Gmail IMAP Error 78754 error.

Also Read: How To Fix Gmail Queued And Failed Error

Frequently Asked Questions (FAQs)

Q1. How can I fix the IMAP server alert in Microsoft Outlook?

Ans. Delete attachments with the emails that you have received on Outlook. These attachments are the main reason behind the IMAP alert. Also, ensure to delete them from the trash bin too. Close and then restart the Outlook application to run it without the server alert.

Q2. Why do I repeatedly get the IMAP error?

Ans. Getting the IMAP error over and again while operating Outlook is usually due to an internet connection or wrong email settings. Also, you can get this error while getting an email on the app.

Q3. Can I connect my Gmail to Outlook?

Ans. Yes, connecting your Gmail account to Outlook is possible. You can do so by adding it via Account Settings in Outlook.

Q4. Is IMAP for Gmail?

Ans. Yes, Gmail provides IMAP for the clients and allows connecting to mail from a desktop or mobile.

Q5. How can I fix the IMAP Gmail error?

Ans. To fix the IMAP Gmail error, you can enable IMAP for your Gmail account by accessing the settings.


Outlook services are indeed very useful if you are a regular user of the application and if you encounter a 78754 error, it can disrupt you from using the email feature of the app. We hope that our guide was helpful and you were able to fix Gmail error 78754 on Outlook. Let us know which one of the methods helped you resolve the issue. If you have further queries or any valuable suggestions to give then drop them down below in the comments section.


How to Fix Gmail Error 78754 on Outlook

Gmail error 78754 is a common issue that can occur when trying to access your Gmail account through Outlook. This error can be caused by a variety of issues, including incorrect settings, server issues, or even a corrupted Outlook profile. Fortunately, there are a few steps you can take to try and resolve this issue.

Step 1: Check Your Settings

The first step in resolving Gmail error 78754 is to check your settings. Make sure that you have entered the correct username and password for your Gmail account. Additionally, make sure that you have enabled IMAP or POP3 access in your Gmail account settings. If you are unsure how to do this, you can refer to Google’s help page for more information.

Step 2: Check Your Server Settings

If your settings are correct, the next step is to check your server settings. Make sure that you are using the correct server settings for your Gmail account. You can find the correct server settings on Google’s help page. Additionally, make sure that your firewall is not blocking the connection to the server.

Step 3: Reset Your Outlook Profile

If the above steps do not resolve the issue, you may need to reset your Outlook profile. To do this, open Outlook and go to the File menu. Select the “Account Settings” option and then select the “Manage Profiles” option. Select the profile you want to reset and then click the “Reset” button. Once the profile has been reset, try accessing your Gmail account again.


Gmail error 78754 can be a frustrating issue to deal with, but it can usually be resolved by checking your settings, checking your server settings, and resetting your Outlook profile. If you are still having trouble, you may need to contact Google or Microsoft for further assistance.

Jaspreet Singh Ghuman

Jaspreet Singh Ghuman

Passionate Professional Blogger, Freelancer, WordPress Enthusiast, Digital Marketer, Web Developer, Server Operator, Networking Expert. Empowering online presence with diverse skills.

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