Error: Your list of user names and passwords appears to have been tampered with, or has become damaged

Hi there, @Praveen_Uduweriya.

Let's get rid of this error message so you can log in to your company file as a non-admin user.

I can see that you haven't encountered this error when logging in as an admin. However, this issue is still caused by data damage on your company file. To get this resolved, let's run Quick Fix my Program from the QuickBooks Tool Hub. Here's how:

1. Download the latest QuickBooks Tool Hub.
2. Open the downloaded file and install it.
3. Once done, open the QuickBooks Tool Hub and select Program Problems.
4. Select Quick Fix my Program.
5. Start QuickBooks Desktop and open your data file.

If you get the same result, you can check out this article for more troubleshooting steps to fix data issues on your company file: Fix issues when QuickBooks has stopped working.

Come back to this post and let me know how the troubleshooting goes, @Praveen_Uduweriya. I want to make sure this is taken care of.

You may also want to manage your users and their restrictions. You can read this resource for the detailed steps and information: QuickBooks Desktop Users and Restrictions.

Have a good one.

I tried all fixes QB Tool hub offers under company file and program issue but no luck so far.

Thanks for following up with the Community, Prav_U. I appreciate you performing Mark_R's recommended troubleshooting steps.

Since you're still receiving the same error message, I'd recommend troubleshooting initially with your Verify Data utility. This identifies known issues within company files and informs users if their Rebuild Data tool needs to be utilized afterwards.

Here's how it's used:

1. Click Window, then Close All.
2. In your top menu bar, go to File.
3. Choose Utilities.
4. Select Verify Data.

In the event its results show a "Your data has lost integrity," message, this indicates there's damage in your file. You can use the Rebuild Data utility to fix it. For specific errors, there may already be a resource for them on our support site.

If it displays a "QuickBooks detected no problems with your data," notification, or you've searched our help articles and didn't find any existing resources about the specific error it displayed, you'll want to get in touch with our Customer Care team. They'll be able to pull up your account in a secure environment, conduct further research with you, and create an investigation ticket if necessary.

They can be reached while using QuickBooks.

Here's how:

1. In the top menu bar, go to Help, then QuickBooks Desktop Help.
2. Click Contact Us.
   
3. Enter a brief description of the issue in your Ask a question (or tell us what's wrong) field.
   
4. Hit Continue.
   
5. Select We’ll contact you for a callback or Message Us to start an instant messaging session.

Be sure to review their support hours so you'll know when agents are available.

If there's any additional questions, I'm just a post away. Have an awesome day!