QuickBooks Error Code 6150 1006 indicates a problem connecting to the company file server. This error occurs when multiple users try accessing the company file over a network. Here is a step-by-step guide to troubleshoot this error:

• Begin troubleshooting by trying to open the company file again after closing QuickBooks. See if the error persists. If yes, proceed with next steps.
• Check if the company file is stored on a shared folder that multiple computers can access over network. Also check if proper permissions are provided. QuickBooks Error 6150 1006 mostly occurs due to permission issues.
• Make sure the network connection is active and working properly if company file is accessed over network. Check if other computers on network can access the shared folder.
• Check if the company file is not corrupted. Run verify utility in QuickBooks to detect file errors. If errors exist, consider restoring recent backup.
• See if antivirus or firewall is blocking access to the company file or shared folders. Add exceptions in antivirus and firewall settings to allow QuickBooks network access.
• QuickBooks requires certain ports like 8019 to be open for multi-user access over networks. Ensure these ports are not blocked on router and computers. Also check if mapped drives are still connected.
• From File menu, switch to single-user mode, reopen company file again in multi-user mode and see if error 6150 1006 still occurs. This resets multi-user access and resolves connectivity issues sometimes.

If above steps fail, consider rebuilding the company file from a backup copy through File Doctor utility. Also update QuickBooks to latest release in case bug fixes are available for multi-user errors.

For QuickBooks Desktop, go to Edit menu Preferences Integrated Applications and disable third party apps integration. Then try opening company file again.

As last resort, consider creating a new company file and import list data from old file. This eliminates data discrepancies that could cause QB error 6150 1006.

QuickBooks error 6150 1006 prevents multi-user access essential for working in teams. Carefully follow above sequence to troubleshoot root cause and resolve issue. Contact QuickBooks support if problem still persists.

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