QuickBooks error 6000 77 takes place when your company file doesn’t have the folder permission. In addition to this, the error 6000 77 may also appear when you have placed the company file on external storage. Causes behind QuickBooks Error 6000 77 Go through the following list of causes that may give rise to QuickBooks error code 6000 77. 1.When you are unable to keep the company file because of not having folder permission, then QuickBooks error 6000 77 takes place. 2.If you have saved the company file on a local drive that is placed on an external storage device, then you have to experience QuickBooks error code 6000 77. 3.You have launched QuickBooks using the reference of the mapped drive. Solutions to troubleshoot QuickBooks Error 6000 77 Below-mentioned is the solutions to resolve the QuickBooks error code 6000 77. Solution 1: You need to give new titles .ND and .TLG files. Solution 2: Utilize the UNC path instead of the mapped drive. Solution 3: Create a new damaged folder. In Conclusion Hopefully, you have fixed QuickBooks Error 6000 77 and find the aforementioned post fruitful. If for any reason, you are still confronting the error 6000 77, then dial our toll-free QuickBooks Error Support Phone Number 1-888-412-7852 to get instant support.