QuickBooks Error 1321 appears whilst the permission issue or system occurs due to incompetent at the installer to write a file. To fix this QB error code, update the permissions or privileges on the parent file/folder for the file/folder or source enlisted in the error message.
You may get the similar error message on your desktop screen:
When installing or updating, you notice Error 1321, followed by one of these messages:
The installer has insufficient privileges to change the file C:\Program Files\Intuit\QuickBooks\sdkeventl.DLL
The installer has insufficient privileges to change the file C:\Program Files\Intuit\QuickBooks\CfScan.DLL
Error 1321: System has insufficient privileges to modify this file
The installer has insufficient privileges to modify the file at C:\Program Files\Intuit\QuickBooks YEAR\QBONLI32.DLL
The installer has insufficient privileges to modify the file 
The installer has insufficient privileges to change the file C:\Program Files\Intuit\QuickBooks Point of Sale X.0\dataimporter.exe
Important Note: The precise file (.dll) path shown in the error message may vary depending upon the way in which of QB installation. If you select Retry, you may possibly see more than one message together with installation or update may fail.
Possible Causes Behind this Error
Your antivirus or security software is conflicting or blocking QuickBooks to get into.
Windows permissions for the folder containing the file are set to restrict access.
The file is damaged.
Just in case, the Windows permissions for the folder comprising the file are placed to “restrict access”.
Due to improper shut-down associated with system.
If the file update procedure is faster than the file copy procedure.
In the event that system security software or antivirus or personal firewall is blocking or creating the problem in QuickBooks update installation.
Read Also: Simple tips to Fix QuickBooks license error after cloning?
Fixing Error 1321: The installer has Insufficient Privileges to change the File
Below we have given 5 troubleshooting way to resolve this error. Follow every step carefully and fix this error code permanently from your QuickBooks. -However, you can easily contact to our 24/7 QuickBooks enterprise support team anytime to truly save your valued time and efforts.
Method 1: Retry the update process
Hit onto the “Retry” button to authorize the update to accomplish.
If it does not work out, choose the “Cancel” icon show up on the error message.
Navigate to the “Option” tab.
Temporarily disable the system security software or antivirus.
Perform clean re-installation for the QuickBooks software.
Method 2: Update all the User Insufficient Privileges to Files
The information and knowledge dialogue box will show the generated error code & message throughout the QuickBooks installation process.
In the following instance, AcrobatConnect.cfg created the error message.
See appearing hidden files & folders, simple file sharing on the Microsoft support website.
Open the “Windows Explorer” tab, go directly to the parent folder enlisted in the QB error 1321 message into the log file.
For illustration, within the path C:\Windows\system32\Macromed\Flash\FlashPlayerTrust\AcrobatConnect.cfg the parent folder is FlashPlayerTrust. The parent folder might be different as shown into the error message.
Press right-click from the parent folder & later choose the “Properties” tab.
Go to the “Properties” tab; choose the “Security” icon.
In “Group” or “User Names” tabs, pick the “Administrators” tab.
In Windows XP Home:
Turn-off the equipment, watch for 5 seconds, and then again turn-on the system.
As soon as the “Windows” logo display in the screen, tap on the “F8” key. By implementing the arrows keys, choose the “Safe Mode with Networking” & press the “Enter” button on the keyboard.
When you look at the Windows XP Professional, pursue the directions to update user privileges. Restart the machine before reinstalling the QuickBooks software.
In the “Group” or “User Names” tab, choose the “System” icon. Then, in the ‘Permissions for System’ tab, make sure that the ‘Full Control’ icon is set to ‘Allow’ icon.
Within the “Security” tab, click the “Advanced” tab.
When you look at the “Advanced Security Settings” window, make sure you’re on the “Permissions” tab.
Pick the “Replace Permission Entries on All Child Objects with Entries Shown Here That Apply To Child Objects” and soon after click the “OK” icon.
Click on the “OK” icon to shut-down the “Properties” display.
Turn the straightforward file sharing back on & then reinstall the Adobe product.
Method 3: Editing the Windows Permissions regarding the Folder
After after the above steps follow these quick steps:
Press the “Windows” button with “R” key (Windows + R) at exactly the same time to start the “Run” box On The keyboard.
After that provide the path for the folder containing the QuickBooks program files in the wild field.
Now press the “Enter” key.
For QuickBooks Pro and Premier ( 32-bit versions of Windows 7 or Vista)
Go to => C:\Program Files\Intuit\QuickBooks 2013
C:\Program Files\Intuit\QuickBooks 2012
C:\Program Files\Intuit\QuickBooks 2010
For Enterprise Solutions:
C:\Program Files\Intuit\Enterprise Solutions 13.0
C:\Program Files\Intuit\Enterprise Solutions 12.0
For QuickBooks Pro and Premier (64-bit form of Windows 7 or Vista)
Go to => C:\Program Files (x86)\Intuit\QuickBooks 2013
C:\Program Files (x86)\Intuit\QuickBooks 2012
C:\Program Files (x86)\Intuit\QuickBooks 2010
For Enterprise Solutions:
C:\Program Files (x86)\Intuit\Enterprise Solutions 14.0
Within the new window, select “View” and then click on “Customize this folder”.
Now click on the “Security tab” in the properties window,
Now Click “Administrators” On the security tab,
After that Choose “Allow checkbox” close to full control option.
Next action will be choose the “SYSTEM” user on the security tab.
And then choose “Allow checkbox” next to full control.
Finally Click on “OK” to close the “Properties” window and Install the QuickBooks.
Read Also: Install QuickBooks enterprise ODBC driver
Method 4: Temporarily turn off antivirus software and reinstall or update
Temporarily turn off antivirus software and reinstall or update - ScreenshotTemporarily switch off antivirus software and reinstall or update - Screenshot
Temporarily disable your antivirus or any other security software that is installed in your system.
Once all the security software are disabled or turned off, just install the QuickBooks software or find out any latest release update.
If you have any update available, download and install it.
Finally reactive your antivirus or any other security software.
Method 5: Download the QBInstall Tool
Download QuickBooks Installation Diagnostic Tool - ScreenshotDownload QuickBooks Installation Diagnostic Tool - Screenshot
Download and install the QuickBooks Install Diagnostic Tool.
Click the “Run” button.
This tool will automatically look for the difficulty. When the tool found the errors, you are able to fix them all by click on fix now button.
I think that we have covered most of the major point to remember, here in this informative technical blog post. However, if you still go through any discrepancy connected with this error or other issue – you can contact QuickBooks error support telephone number. Our experts can easily be bought 24/7 to assist you.