QuoteWerks Knowledgebase Topic (Article ID 6128)

MaxLocksPerFile - File sharing lock count exceeded

This information applies to :

Article ID

July 17, 2019


Are you using the most current release of QuoteWerks?
Version 5.5 Build 5
IMPORTANT: This article contains information about modifying the registry. Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click the following article number to view the article in the Microsoft Knowledge Base: 256986

When upgrading or updating a QuoteWerks installation or importing SYNNEX product database, you receive the following error message:

Trapped unexpected error -2147467259
File sharing lock count exceeded. Increase MaxLocksPerFile registry entry.

The error occurs if the number of locks required to perform a transaction exceeds the maximum number of locks per file.


The MaxLocksPerFile Registry entry or entries needs to be increased on this machine.

1. Click Start, and then click Run.
2. Type regedit, and then click OK.
3. In Registry Editor, single left click on My Computer on the left hand menu to select it, then go up to Edit and down to Find. Type in MaxLocksPerFile and click Find Next.

It should at the very least locate the following registry key:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Jet\4.0\Engines\Jet 4.0

If running on a 64-bit Windows operating system, use Registry Editor to locate the following registry key:
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Jet\4.0\Engines\Jet 4.0

4. In the right pane of Registry Editor, double click MaxLocksPerFile.
5. On the Edit DWORD Value dialog box, click Decimal.
6. Modify the value of the Value data box to 15000 and then click OK.
7. Press F3 on the keyboard to verify there are no other instances of that registry entry; if it finds more than one, follow steps 4 through 6 for each.

The default value of this setting is 9500. However, changing this value is not recommended if the database is located on a Novell Netware server, because the server's maximum record locks per connection is 10000. If the database is located on servers running Microsoft Windows NT 4.0 or Microsoft Windows 95 or later, the maximum value of this setting is limited only by available resources.

After making the maxlocks modification to the Windows registry, the system must be rebooted in order for the change to take effect.

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