Zoho CRM Error message #2 : Fixing [Invalid Credentials] and [Authentication Fail] while configuring IMAP

Zoho CRM Error message #2 : Fixing [Invalid Credentials] and [Authentication Fail] while configuring IMAP



Hi Everyone!

As a part of our Zoho CRM Error messages series, we're going to focus on couple of error messages that you might encounter while configuring IMAP and ways to resolve them. These are:

  • [Invalid Credentials]

  • [Authentication Fail]

 

The annoying part is that sometimes you get these error messages despite entering the correct credentials. Troubleshooting these errors start with understanding the root cause of these errors. You get these errors when:

  • TFA (two factor authentication) is enabled for your account

  • An previously saved password gets auto filled while configuring but you changed the account password recently.

  • When an incorrect server name is entered. For e.g., the user might be in zoho.eu domain but entered the domain name as zoho.com.

 

How can you resolve these errors?

  • If TFA is enabled: Generate app specific password for your email account from the "Two Factor Authentication" section in your Zoho Accounts page and use the same for IMAP configuration. More on that here.

       

       

 

 

  • Password auto fill: If a previously saved password gets auto filled and you have changed the password since then, ensure you retype the password manually while configuring.

  • Ensure you use the correct hosted server name while configuring IMAP.

  • Ensure you are logged in to web mail while configuring the IMAP.

 

Hope this helps resolve the error messages encountered while configuring IMAP. If the issue persists, do post in our community or contact our support team for the fix. 

We will continue to add more fixes to other prominent error messages in the coming weeks. Stay tuned!

Check the steps for resolving connection errors while configuring IMAP here.


    • Sticky Posts

    • How to reach the official Zoho Support channels and avoid fake ones.

      Dear Customers, Thanks a lot for choosing Zoho! Our applications are built to help achieve your day-to-day business goals. We are committed to engaging with you, to understand and develop solutions that enhance your productivity.  We are happy and ready to help you use our services effectively. Understanding and avoiding fake support Just like using popular bank names and financial applications for phishing purposes, using Zoho and claiming to be providing Zoho Support or services with false numbers
    • Function #35: Close all tasks associated with a lead and create a new task.

      Welcome back everyone! Last week, we learnt how to close all tasks of a deal depending upon the deal stage. This week, let's look at a custom function that lets you close all of the tasks associated with a lead while simultaneously creating a new task, like when you need to halt all progress towards a lead while the lead is not available at the moment but create a reminder task. Business scenario: The success of a company, in one way or another, is determined by the leads it gets. Each lead is just
    • Zoho CRM Webinar - Redesigning Daily User Experiences with Canvas

      <br> Your users across roles use the CRM for day-to-day tasks that are necessary. Whether they perform their tasks on time, the right way, or at all depends on a lot of factors, including User Experience. Many businesses struggle with rigid layouts,
    • Join us at the Canada ZUG Meetup: What’s New in Zoho CRM

      Hello Zoho Community! Start your year with fresh insights into Zoho CRM’s latest updates and tools. Whether you're a CRM beginner or a experienced user, this meetup is crafted to help you optimise your processes and leverage new features. Explore practical
    • CRM Hack #2: Automate sending of birthday greetings to your customers.

        Hello everyone! What sets you apart as a sales person is your ability to add that personal touch to your business relationship with your customers. Sending a gift on a special day, or leaving a note wishing them on their birthdays, are small, yet significant actions that show your customers that you care. And these are actions done without any expectations :) You must be engaging with a lot of customers and it is highly unlikely that they all are your friends on Facebook or some social channel,
    • Recent Topics

    • Introducing Multi-Asset Support in Work Orders, Estimates, and Service Appointments

      We’re excited to announce a highly requested enhancement in Zoho FSM — you can now associate multiple assets with Work Orders, Estimates, and Service Appointments. This update brings more clarity, flexibility, and control to your field service operations,
    • Getting an error Address not found Your message wasn't delivered

      Hey, I'm trying to configure zoho mail for my website https://businessentity.org/ The email is meredith.karter@businessentity.org I'm able to successfully send the mails but when someone sends an email to above mail, this error shoots up: Address not
    • Support Uploading YouTube Videos Longer Than 60 Minutes

      Hi Zoho Social Team, How are you? We would like to request support for uploading YouTube videos longer than 60 minutes directly through Zoho Social. Your support team informed us that Zoho Social currently cannot upload videos over 60 minutes due to “API
    • Need Faster Help? Try Live Chat Support

      Hello there, We understand that sometimes, whether you’re facing an issue, exploring a feature, or need quick clarification, sending an email and waiting for a response just doesn’t cut it. You need answers, and you need them now. That’s exactly why we
    • Can't deactivate Spell Check

      Hi Community, right now I'm using the Zoho Mail Desktop-Software. So far, so good.. many possibilities. Overall very nice. What is extremely annoying right now, is that we are not able to deactivate the Spell Check feature. And we are barely able to focus
    • Zoho Toolkit Email Signature Generator

      I'm having real issues with the email signature generator with no matter where I host the photo, Zoho doesn't seem to show the photo on the link provided?
    • Company Policy Upload - Request All EE to review and sign

      How can I upload policies into Zoho People and have the employees review them and sign off saying they agree, etc.? Also, if I make a revision to a policy, I would like that changed or updated policy to be distributed or have the employees notified that
    • Zoho Sign Global Settings vs. Template and Document

      Hello, We are running into an issue on a current use case. We already use Zoho Sign. Now that KBA is available, we want to begin using it in our tax delivery process, by allowing clients to sign electronically, but also download a copy of their return
    • Zoho Mail Desktop Crashes on Linux - Ubuntu 24 LTS

      Hi, I have been trying to run the desktop app on Ubuntu for the past few day with no luck. I have tried both the .deb package and the appImage. When I attempt to open the app. It just crashes immediately. The crash error dialog appeared once and I cant
    • Can't login to Zoho mail

      I'm logged into Zoho but when I try to go in zoho mail I get: Invalid request! The input passed is invalid or the URL is invoked without valid parameters. Please check your input and try again. I just set up my mx records and stuff with namecheap a few
    • Zoho IP blocked by SpamCop

      Hi, Many of my emails are blocked and I receive this:  INVALID_ADDRESS, ERROR_CODE :550, ERROR_CODE :spamcop.mimecast.org Blocked - see https://www.spamcop.net/bl.shtml?136.143.188.51. - https://community.mimecast.com/docs/DOC-1369#550 [DGwIYPPSOfWI
    • Differences between Zoho Books and Zoho Billing

      Without a long drawn out process to compare these. If you were looking at these Books and Billing, what made you opt for one and not the other. Thanks
    • Custom validation in CRM schema

      Validation rules in CRM layouts work nicely, good docs by @Kiran Karthik P https://help.zoho.com/portal/en/kb/crm/customize-crm-account/validation-rules/articles/create-validation-rules I'd prefer validating data input 'closer to the schema'
    • No Ability to Rename Record Template PDFs in SendMail Task

      As highlighted previously in this post, we still have to deal with the limitation of not being able to rename a record template when sent as a PDF using the SendMail Task. This creates unnecessary complexity for what should be a simple operation, and
    • Server error when trying to Data > Sort > Custom Sort

      Been using Data > Sort > Custom Sort for a while, now it has suddenly stopped working. When selecting the same data range and trying to execute, I get "Sorry! There was a problem saving your last edit. Please try again."
    • To Assign a genrated pdf to a file upload field using delug

      content = "<html><body>HTML Content on page One <div style='page-break-after:always'></div> HTML Content on page Two </body></html>"; file = zoho.file.convertToPDF(content); file.setFileName("Name of the file"); <variableName> = <FormLinkName>[ID == input.ID];
    • TArgets To Accounts (Modules)

      How can i set sale target to Customers (Accounts Module)
    • Breaking barriers with multilingual WhatsApp templates in IM

      Ever wondered what it feels like to be greeted in your own language by a brand you love? A “Welcome!” feels nice, but a “¡Bienvenido!” or “स्वागत है!” feels personal. In today’s global world, conversations often need to cross both time zones and cross
    • Super Admin Logging in as another User

      How can a Super Admin login as another user. For example, I have a sales rep that is having issues with their Accounts and I want to view their Zoho Account with out having to do a GTM and sharing screens. Moderation Update (8th Aug 2025): We are working
    • How to share private Opportunities with whole org at an account level

      Opportunities are currently set to private, so our sales team only sees their own opportunities, along with their manager and upper leadership. The need is the ability for the rest of the Org to see the opportunities at an account level, not within the
    • New in Smart Prompt: Record Assistant for contextual assistance, and support for new AI models

      Smart Prompt helps teams stay informed and move faster by providing relevant suggestions where work happens in CRM. With this update, Smart Prompt becomes more adaptable to your organization’s AI preferences. You can now choose which Large Language Model
    • Problema Verificacion con proveedor NIC.AR

      No puedo realizar la verificación del correo, he seguido los pasos indicados y configurado los MX. Y no puedo verificar el correo. He leido en el foro que otros han tenido el mismo problema. Alguno pudo solucionarlo?
    • How to remove some users in zoho accounts

      How to remove some users in Zoho accounts.
    • Unified Inbox for all, including fetched mails

      I fetch mails from different third-parties mailboxes. But I need to switch mailbox too see fetched mails. It's strange. All mailboxes have one shared disk space for own mail and fetched mail, but why do we need to switch mailbox (on the left bottom) to
    • Whatsapp Limitation Questions

      Good day, I would like to find out about the functionality or possibility of all the below points within the Zoho/WhatsApp integration. Will WhatsApp buttons ever be possible in the future? Will WhatsApp Re-directs to different users be possible based
    • Users Not Automatically Being Added To WorkDrive Team

      I have already created a ticket for this issue, but the support team doesn't seem to understand what's happening. Our organization started with a trial of Zoho Workplace around November 10, 2025. I created 10 users, including myself. I sent out the invites,
    • Synchronization between Gmail and Zoho Mail

      Hello! I am using Zoho Mail within the Zoho One platform. I have completed the basic setup and added all the required DNS records with our domain provider. Our goal is to set up two-way synchronization between our current Gmail inbox and Zoho Mail, but
    • IMAP login problem

      I have my domain hosted with zoho @wilson.ie I have added a new user and have enabled IMAP access to this user account The user can login to zoho mail on the web. When we enter the server settings into Outlook as per below, Outlook cannot login to the
    • Contact data removes Account data when creating a quote

      Hi, Our customer has address fields in their quote layout which should be the address of the Account. They prefill the information, adding the account name - the address data is populated as per what is in the account - great. However when they then add
    • Changes to subform in Zoho CRM Portal Timeline History Unavailable

      Hi Support Team, We have noticed a feature limitation in the Zoho CRM portal. We created a portal for our vendors to edit records directly, but when vendors make updates, the Modified Time and Date fields are not being updated. Additionally, these updates
    • This mobile number has been marked spam. Please contact support.

      Hi Support, Can you tell me why number was marked as spam. I have having difficult to add my number as you keep requesting i must use it. My number is +63....163 Or is Zoho company excluding Philippines from their services?
    • Function #11: Apply unused credits automatically to invoices

      Today, we bring you a custom function that automatically applies unused credits from excess payments, credit notes, and retainer payments to an invoice when it is created. Prerequisites: Create a Connection named "zbooks" to successfully execute the function.
    • Duplicating report but custom layout does not

      Dear Zoho Creator, I need to duplicate a report into 10 copies, but unfortunately the custom layout (detail view) doesn’t copy along with it. I tried exporting and importing the custom layout, but the field mappings are incorrect. I believe everyone are
    • Credit Card Readers?

      We would like to use our commerce website at conferences (and eventually in store) to swipe credit cards to pay for orders. How would we accomplish this? Does Zoho have anything available for a developer write code to integrate something like Stripe Terminal
    • Stock count by bin location

      Is there a configuration to make a stock count by bin or area and not by product. these is useful to manage count by area Regards
    • Add Prebuilt "Partner Finder" Template with Native Zoho CRM Integration in Zoho Sites To: Zoho Sites Product Team

      Hi Zoho Team, We hope you're doing well. We would like to request a prebuilt "Partner Finder" template for Zoho Sites, modeled after your excellent implementation here: 🔗 https://www.zoho.com/partners/find-partner-results.html ✅ Use Case: Our organization
    • How Do I Refund a Customer Directly to Their Credit Card?

      Hi, I use books to auto-charge my customers credit card. But when I create a credit note there doesn't seem to be a way to directly refund the amount back to their credit card. Is the only way to refund a credit note by doing it "offline" - or manually-
    • Limitation with Dynamic Email Attachment Capture

      I've discovered a flaw in how Zoho Creator handles email attachments when using the Email-to-Form feature, and I'm hoping the Zoho team can address this in a future update. The Issue According to the official documentation, capturing email attachments
    • Zoho Learn Course Completion Notifications/Triggers/API

      Zoho Learn works great and will suit our course creation needs, but it appears to be lacking a bit when it comes to integration with other Zoho services (creator etc.) when it comes to course completion. 1) Is there an API or Zoho Flow trigger for when
    • Enhanced Recording Permission Controls for Zoho Cliq Meetings (Similar to Zoom)

      Hello Zoho Cliq Team, We hope you are doing well. We would like to request an enhancement to the recording permission functionality in Zoho Cliq Meetings. Current Limitation: in Zoho Cliq Only hosts and co-hosts can record a meeting. Participants cannot
    • Next Page