When you try to access a company file or open the QuickBooks application, you may get QuickBooks error 3645 with an error message saying: "QuickBooks encountered potential errors when trying to access the company file. Data integrity verification failed ( Error 3645)."

Error 3645 appears because of a failure in data integrity verification in QuickBooks and prevents you from accessing the file. In this blog post, we will discuss the root cause and suitable fixes to eliminate this data integrity error. 

With the help of this guide, you can fix the error code 3645 successfully on your own, but there could be some difficulty while resolving it because of the technical terms used in it. In such conditions, it is advisable to seek professional help. Dial TFN, contact our QuickBooks experts and get immediate assistance. 

Reasons Why QuickBooks Error Code 3645 Appears

Many reasons contribute to this error, such as network connectivity, damaged company files, or any error with the QuickBooks program itself. Let's understand all the possible reasons in detail. 

• If QB maker is installed on the system, it can lead to Error 3645, possibly indicating a scam.

• Your company files may have lost its data integrity due to file corruption or mishandling,

• Sometimes, the problem with the network connection also leads to error 3645.

• Damaged company files can be one of the reasons behind error 3645.

• Issues with the QuickBooks program itself, such as installtion issues or corrupted program files, prevent you from accessing the file and may cause error 3645.

Troubleshoot QuickBooks Error Code 3645 Immediately

As you have already understood the reasons, now it's time to discuss suitable fixes for the error code 3645. Follow the below solution to fix the error 3645.

Solution: Delete the QBMaker Files On the System

QBMaker is not a legitimate product or service; it is scareware and a part of a malicious campaign targeting QuickBooks users to steal their valuable information or scam them. To restrict QBMaker, delete the .config and .manifest executable files. Follow the steps given below to perform the action. 

Note: It is important to delete these files from the local drive, not from any cloud storage or network drive. 

• Open File Explorer.

• Navigate to the C: drive.

• Within the C: drive, locate the Program Files folder. 

• Look for a folder named QBMaker.

• Within the QBMaker folder, find the file 90s.trf

1. QuickBooksDownloader.exe.config

2. QuickBooksDownloader.exe.manifest

• Select these files by clicking on them.

• Once selected, click on the Bin icon in the top menu bar of File Explorer to delete them.

• After deleting these files, launch QuickBooks and open the company files.

• Lastly, check whether the QuickBooks error code 3645 has been resolved after restricting the functioning of QBMaker.