QuickBooks Error Code 6123,0 typically occurs when you're trying to open or restore a company file and there are issues related to the network, company file, or third-party security applications. Here are steps to resolve this error:
1. Rename .ND and .TLG Files:
Navigate to the folder where your company file is located.
Look for the files with the same name as your company file but with extensions .ND and .TLG (e.g., MyCompanyFile.qbw, MyCompanyFile.nd, MyCompanyFile.tlg).
Rename both the .ND and .TLG files by adding .OLD at the end of their names (e.g., MyCompanyFile.qbw.OLD, MyCompanyFile.nd.OLD, MyCompanyFile.tlg.OLD).
2. Use the QuickBooks File Doctor:
Download and run the QuickBooks File Doctor, a free tool provided by Intuit, to diagnose and repair network and company file issues.
3. Disable Hosting on All Workstations:
Open QuickBooks on all workstations and go to "File" > "Utilities."
If you see "Host Multi-User Access," choose this option. If you see "Stop Hosting Multi-User Access," click that option.
Ensure that no workstation is hosting the company file.
4. Check the Firewall and Security Software:
Make sure that your firewall and antivirus software aren't blocking QuickBooks. Configure your security software to allow QuickBooks through.
Greetings,
Peter