You are prone to QuickBooks error message 3645 when data integration verification fails, and this may also occur due to damaged QuickBooks company files or other program issues. When this occurs, you are shown an error message popping up on the screen stating: “Data Integrity Verification Failed.” This issue is not limited to a single version but can be encountered in any QuickBooks version( Pro, Premier, and Enterprise ). The issue is triggered by the data file damage and inconsistency. To learn more about the error, you are requested to stay connected to the blog until the end.

Error 3645 is encountered occasionally, and resolving it is essential as it is a company file-related problem. So to do so, you are given a detailed guide on it. If there are still queries, don’t hesitate to contact the experts. Dial 1–855–542–9309 and instantly get connected to them via phone.

What Leads to QuickBooks Error Message 3645?

These are the causes that have been triggering this error the most.

• This mostly occurs when there is company file damage.
• You may run into this error due to face integrity issues.
• The error occurs when the QuickBooks verification fails.
• You might not have installed QuickBooks.
• There might be some issues within the program.

Fixing QuickBooks Error Message 3645 with Experts

Look at the methods given below; they have been tried and tested, and then they’ve been brought to you. Read them carefully before performing.

Step 1: Rebuilding the company file data

1. Go to File.
2. Choose Utilities.
3. Tap Rebuild Data.
4. Before proceeding, the software asks you to create a backup; then you can rebuild the data file. 
5. Click OK to create a backup of your files.
6. Choose a location where you will be saving these files.
7. Click OK.
8. Replacing the backup file is prohibited.
9. Give a new name in the File name.
10.  Choose Save.
11. After the rebuilding procedure, you will be prompted with a message; click OK.
12. Head over to File.
13. Pick Utilities.
14. If you want to recheck the damage. Click Verify data again.

    • If any damage is found, you need to troubleshoot it manually.  First, look for the issues in the qbwin.log file, and then you can learn how it is resolved in the QuickBooks Desktop Support Site.

    • You can simply restore the last backup if no error is found. Go to File and choose Open or Restore Company.

Step 2: Run Quick Fix My File

1. Go to the QuickBooks Tool Hub.
2. Choose Company File Issues.
3. Click Quick Fix My File.
4. After it is done, tap OK.
5. Lastly, open QuickBooks. This will resolve QuickBooks error 3645. If not, move ahead.

Step 3: Run QuickBooks File Doctor

1. Go to the QuickBooks Tool Hub.
2. Choose Company File Issues.
3. Choose Run QuickBooks File Doctor.

Important: Give it a minute to open. If you can’t find QB file doctor, search for it manually by entering “QuickBooks Desktop File Doc.”

1. In this, look at the drop-down menu.
2. Choose your company file.

Important:  Choose Browse and search if you can’t find the company files.

1. Click Check your file (middle option only).
2. Tap Continue.
3. Enter your QuickBooks admin password.
4. Click Next.

Finally

At the end of the blog, it can be considered that QuickBooks error message 3645 is a data integrity issue that commonly occurs due to damaged company files. This segment consists of all the required information that you will need to resolve it. If you can’t resolve it by the methods provided, give a ring to 1–855–542–9309 and let pro advisors do it for you.