MPOS touch screen grid freeze issue

Note – This issue occurs only on few POS models so you may or may not face this issue. I do not have a list of models that have this issue, though I have experienced this on a HP RP9 POS and on D365FO 7.1 Retail SDK

When trying to scroll through MPOS using touch gesture, in the views that have a grid (examples Tender Declaration, Show Journal, Product Search) you may experience the screen layout on the row you touch, getting out of alignment with the remaining rows and the screen freezes with no further response to touch gestures.

A workaround is to use a mouse instead of touch for scrolling but obviously this can only be a temporary arrangement.

When we contacted Microsoft support, we were given a one line code change fix  that consists in changing the WinJS script that is provided  in the Retail SDK. The script to be changed is the WinJS ui.js and update the equivalent minified file (ui.min.js). The exact change can be seen in this github link:


-Hitesh Manglani


A process serving application pool ‘AOSService’ suffered a fatal communication error with the Windows Process Activation Service.

When trying to host the Demo VM in the company’s data centre (host) we came across the below error-

A process serving application pool ‘AOSService’ suffered a fatal communication error with the Windows Process Activation Service. The process id was ‘3680’. The data field contains the error number.

One thing I attempted to do, based on some suggestions on the web, was to “Enable 32-Bit applications” in the app pool.

This simply changed the error message to below-

Could not load file or assembly ‘Microsoft.Dynamics.AX.Security.SidGenerator’ or one of its dependencies. An attempt was made to load a program with an incorrect format.

I tried all the usual tools to try to troubleshoot the issue-Fiddler, Procmon, but no lead. Finally reached out to my mentor Brandon Ahmad . He was quick to point out to check the time zone on the Demo VM which may not be matching the host machine.

The demo VM was set on US Time Zone and the host was set to Singapore Time Zone, once I changed the timezone in the demo VM to match the host, that fixed the issue!


-Hitesh  Manglani

The significance of being in the zone, time zone that is.

This is a post with respect to how combined date/time fields is handled in AX/Dynamics 365 for Operations (Dyn365FO). For more information on the type of date and time fields in AX visit the following link from

Date/time data and time zones

Dyn365FO stores combined date/time fields internally in the SQL database based on UTC time zone. Whenever the date is to be displayed to the user, an offset based on the user preferred time zone is applied and then shown to the user.

This preferred time zone is set in the following section in Dyn365FO.

System Administration-> Users -> Users

User Options

Options-> Preferences

Time Zone

An excellent post that take a deeper dive on the subject along with the X++ code is found in the below link

Working with utcDateTime Functionality in Dynamics AX 2012 – StoneRidge Software


-Hitesh Manglani


MPOS Package failed to deploy – Windows cannot install package because this package depends on a framework that could not be found

So recently I successfully build my Retail SDK and uploaded the installer to one of my D365FO environment, but when trying to install the package faced the below issue.

“Windows cannot install package because this package depends on a framework that could not be found”

Here is an extract of the MPOS installation error logs.

System.IO.IOException: Deployment failed with HRESULT: 0x80073CF3, Package failed updates, dependency or conflict validation.

Windows cannot install package xxx because this package depends on a framework that could not be found. Provide the framework “Microsoft.NET.CoreRuntime.1.0” published by “CN=Microsoft Corporation, O=Microsoft Corporation, L=Redmond, S=Washington, C=US”, with neutral or x64 processor architecture and minimum version 1.0.23819.0, along with this package to install


<Final Update 18 Apr 2018>

The solution is to build the package with configuration=release,

msbuild /p:Configuration=Release

thanks to MVP Kurt Hatlevik  

</Final Update>


-Hitesh Manglani

Update SQL Server Management Studio

If you get the following prompt while trying to Browse properties of your Database in SQL Server management studio, its time for an update.

“Cannot show requested dialog” 

“Method not found: ‘System.Collections.Specialized.StringCollection”

SQL Server Properties Error

Next step would be to  click on Tools-> check for Updates and you would most likely have an update waiting to be installed.

SSMS Update 

Click on Update in the above screen to be redirected to the link to download latest version of SQL Server Management Studio. (17.6 at the time of this writing).

Once the update is completed you would need to restart the machine.


-Hitesh Manglani

Setting up a personal Dynamics 365 For Operations, Enterprise Edition, development environment

Learning Dynamics 365 for Operations / X++

(last updated 2018-02-08)

Microsoft expects all Dynamics 365 / X++ development to be done in a preconfigured virtual machine (sometimes called a “onebox”) that has local installs of Visual Studio, Dynamics, and SQL Server; these are integrated in a way to ease development. They would prefer that you rented these VMs from them, which has some integration advantages; but it is possible to set up your own, which is probably less expensive in the long run, and might be more convenient. These instructions will help you set up that development environment on a personal machine; although there are a few wiki pages on it, there does not seem to be any complete information gathered in one place.

As with all my blog posts, if you have comments or additional information, I will endeavor to update what I have written here. I have noticed that this is by far my most…

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MPOS randomly switching from online mode to offline

In my recent Dynamics 365 for Operations implementation on 7.1, we encountered an issue with MPOS switching to offline randomly . MPOS as we know switches to offline either when triggered manually or when the switch is seamless (automatically) when there is any issue in the communication between MPOS and D365 Retail Server, an example is a network interruption (for more information on the overall Retail Topology do refer this link MPOS Technical Architecture)

In a usual scenario, when an interruption occurs in between a transaction, cashier would get an error message the Cart State has changed. The cashier would need to void the transaction and then start all over again and end with creating an offline transaction (Not the kind of experience you want when you have a queue of customers at the billing).  Another issue that coupled with this was that the MPOS logo would not switch from offline to online when the MPOS mode switched.


Bottomline –

Make sure you uptake following binary hotfixes as soon as you can if you have enabled MPOS in offline mode

KB 4049328 – MPOS offline logo issue

KB 4058723- Set of reliability fixes for POS Offline

Also include the following X++ hotfix which complements the above binary fix

KB4058724 – Set of reliability fixes for POS Offline



-Hitesh Manglani