Complete guide to fixing QuickBooks Error Code H505
                     Your Step-by-Step Guide to 
Troubleshoot QuickBooks Error H505
QuickBooks is a robust accounting application that comes with 
various built-in advanced features. It helps users to work on the 
same QuickBooks company file from different workstations, which 
is known as multi-user mode. While switching QuickBooks to multi-
user mode, users sometimes encounter QuickBooks error H505. It 
appears with an error message on the screen that says, “This 
company file is on another computer, and QuickBooks needs help 
connecting.” Read the advisory blog until the end to know what 
factors prompt error H505 in QuickBooks and how to fix it.
If you are troubled because of QuickBooks error H505, reach out 
to the QuickBooks support team for effective assistance by calling 
us on our toll-free number 1.855.738.2784

Causes behind the occurrence of 
QuickBooks error code H505
Here are some main reasons behind the error:
1. Presence of damaged and corrupted company files in the QuickBooks 
folder.
2. Wrong hosting configuration on the server computer and workstation.
3. QuickBooks files are missing from the directory or workstation.
4. Firewall is restricting QuickBooks from accessing company files.
Solutions to Eradicate QuickBooks 
multi-user error H505
Solution 1. Change Hosting on the server 
computer and workstation
1. Open QuickBooks on the workstation where you get error H505.
2. Select the File menu, then Utilities, and find the Stop Hosting Multi-
User Access option. If you can’t
3. find this option on the workstation, go to another one. This one is not 
causing any issue.
4. On the next workstation, open QuickBooks and select the File menu.
5. Choose Utilities and select the Stop Hosting Multi-User Access option.
6. Check all your workstations and turn off Host Multi-User Access.
7. Now, go to your server computer, open QuickBooks, and choose the 
File menu.
8. Click Utilities and then the Host Multi-User Access option.
Solution 2. Reset firewall settings to 
resolve this multi-user error
1. Click the Windows Start icon, type ‘Windows Firewall’ in the 
search box, and open Firewall.
2. Select Advanced Settings, right-click Inbound Rules (later 
Outbound Rules), and click New Rule.
3. Select Port, then Next, and select TCP.
4. Under the Specific local ports field, enter the specific ports for 
your QuickBooks year version and click Next.
5. Choose Allow the Connection, and then Next.
6. Check to make sure all profiles are marked, then click Next, and 
create a new rule with the name ‘QBPorts (year).
7. Lastly, click Finish and repeat the same steps to create 
outbound rules.
Solution 3. Create a new folder or the 
company files
1. Move to the computer that is hosting the company file and open 
the QuickBooks folder.
2. On your desktop, create a new folder and paste your company 
files into it.
3. Right-click the folder you created and choose Properties.
4. Select the Share tab and then Advanced sharing.
5. Select the Share This Folder checkbox and click Permissions.
6. Mark the Full Control checkbox to everyone, click Apply, and 
then OK.
We are full of hope that the resolutions discussed in the blog will 
help you fix QuickBooks error H505. If the error continues and you 
are still facing any difficulty, connect with the QuickBooks support 
team for assistance via 1.855.738.2784.