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ColdFusion Limits - Coldfusion.util.MemorySemaphor

In the course of uploading large files to a ColdFusion server you may encounter this error:

coldfusion.util.MemorySemaphore$MemoryUnavailableException: Memory required (XXXXXXXXX bytes) exceeds the maximum allowed memory.
The solutions I was able to find; suggest only increasing the "Maximum Size of Post Data" setting within the ColdFusion Administrator. However, you also need to increase the "Request Throttle Memory" settings. The limits must be greater than the size of the file being uploaded.

SQL AlwaysOn Availability Group Secondary Replica Disconnects Immediately After Setup

While setting up a SQL AlwaysOn Availability Group I ran into a very interesting problem.

I had created the AG while preparing for an upcoming speaking engagement so I'd setup two VMs (Node A and Node B) and checkpointed them immediately before creating the AG. This way I could just go back to the checkpoint and start the demo during my presentation.

This turned out to be very helpful because for the very first time I ran into an issue setting up a SQL AlwaysOn Availability Group. All previous configurations had gone flawlessly.


Coldfusion IIS Exception 0xc0000005

One of the ColdFusion 2016 servers that I'm responsible for managing suddenly stopped working after a simple reboot.

The hosting environment is Windows based and I found that the ColdFusion Application Server service would not start.

There were several Windows Event Log exceptions:

The ColdFusion 2016 Application Server service terminated with the following service-specific error:
The system cannot find the file specified.
The ColdFusion 2016 Application Server service could not be started. Check the server "cfusion" log files for more information.
Faulting application name: coldfusion.exe, version: 2016.0.0.0, time stamp: 0x56c57b78
Faulting module name: coldfusion.exe, version: 2016.0.0.0, time stamp: 0x56c57b78
Exception code: 0xc0000005
Fault offset: 0x0000000000003770
Faulting process id: 0x15b8
Faulting application start time: 0x01d39b7e57454b68
Faulting application path: L:\ColdFusion2016\cfusion\bin\coldfusion.exe
Faulting module path: L:\ColdFusion2016\cfusion\bin\coldfusion.exe
Report Id: bc57f2d2-201b-4249-976c-9d21dd338af8
Faulting package full name:
Faulting package-relative application ID:

Since the ColdFusion files were still in the same location and the permissions had not changed I was a bit puzzled.

The CFUSION logs did not have any useful information.


ColdFusion AES 256 JCE Unlimited Policy Files

While using ColdFusion's Encrypt() function I received this error:

The key specified is not a valid key for this encryption: Illegal key size or default parameters. If encryption key size is greater than 128 bits make sure to insall JCE Unlimited Strength Policy Files. Use the generateSecretKey method to generate a valid key for this operation.

The solution is pretty straight forward, but not well documented.

First download the the APPROPRIATE version of the Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy Files. You can review your Java version inside the ColdFusion Administrator > Java and JVM tab. You'll also need to note the path to the JVM used by ColdFusion from the same tab.

The Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy Files will come as two JAR files:


Use these files to replace the existing files in:

{Coldfusion JVM Path}\lib\security\

NOTE: You should create backups of the existing files before replacing them.

Windows 10 Update 1703 BSOD

After the most recent Windows 10 update (1703); my very solid and stable workstation started getting blue screens.

Being a windows user for more than twenty years I've come to expect the occasional BSOD. Things fail. It just happens.

So while the first BSOD was troubling; I was not immediately alarmed.

After the third BSOD I knew something was wrong.

Running WhoCrashed revealed the root cause to be:


A bit of searching revealed that to be WiFi related.

I fixed my problem by downloading the latest reference drivers from my WiFi networking card manufacturer.

ColdFusion Sending Page Cache Headers By Default

ColdFusion 11+ will by default send caching headers on every request (i.e cache-control, Pragama: no-cache, etc.)

The solution is buried in this Adobe Tracker thread:

I'm documenting it here because I continually run into the problem when installing new instances of ColdFusion and I continually find myself searching for hours for the solution.

Simply comment out the entire MobileDeviceDomInspectionFilter section in the web.xml file:


Branch target offset too large for short null in ColdFusion

When working with complex logic functions in ColdFusion (i.e. lots of code) I've encountered this error numerous times

Branch target offset too large for short null

This error essentially means your method length exceeds what the JVM allows.

To correct the error break the logic up into multiple smaller functions.

SQL Server Reporting Services (SSRS) Emails Invalid Report Links

Typically it's unnecessary to adjust the default SSRS email report settings, but sometimes it's unavoidable. For instance, in our case we needed to expose the SSRS web portal on a specific URL.

We're using the latest version of SSRS: SQL Server SSRS 2016

I found several references and guides on how to change this via the SSRS configuration file:

{MSSQL DIR}\MSRS13.MSSQLSERVER\Reporting Services\ReportServer


RDS no longer working in ColdFusion 2016 on IIS

While setting up my first ColdFusion 2016 server I came across an interesting problem with RDS.

My problem was that I could not get RDS to connect via ColdFusion Builder 3.

The error when I would attempt a test connection:

Unable to contact RDS Server "[Remote Server]". This can be caused by incorrect configuration on either the client or the server.

Please verify your connection details below or check your servers documentation on how to enable RDS for your server.

The HTTP request to talk to your server returned with the following message:
Error executing RDS command. Status Code: 404, Reason : Not Found

First I made sure RDS was enabled via the ColdFusion Administrator.


CFSPREADSHEET action="write" java.lang.NullPointerException error

Came across some odd CFSPREADSHEET behavior in ColdFusion.

I was attempting to quickly export a query object to an Excel spreadsheet:

<cfset tmpXLSFile = "#getTempDirectory()#data_export.csv">
<cfspreadsheet action="write" overwrite="true" filename="#tmpXLSFile#" query="exportData">

ColdFusion kept throwing this strange error:

An exception occurred while using action=write. java.lang.NullPointerException


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