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MSFS20 Duplicate GUID

rhumbaflappy

rhumbaflappy

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I just had an instance of a gltf I made that had a guid conflict. The model was processed through MCX, but that was not the problem. The guid did work in the past, but the new update apparently included a guid that matched mine. First time that ever happened to me. The end-result was my model was replaced by the new MSFS model. So it can happen, though extremely rare. So if your placement shows the wrong model, you may need to change it's guid in the gltf XML, and place the model with the new guid.
 
rhumbaflappy said:
I just had an instance of a gltf I made that had a guid conflict. The model was processed through MCX, but that was not the problem. The guid did work in the past, but the new update apparently included a guid that matched mine. First time that ever happened to me. The end-result was my model was replaced by the new MSFS model. So it can happen, though extremely rare. So if your placement shows the wrong model, you may need to change it's guid in the gltf XML, and place the model with the new guid.
Click to expand...
How (how much) lucky are you to repeat an identical GUID ?
this thing is extremely rare ... Prefers to win a lottery 😁
 
Cédrice said:
How (how much) lucky are you to repeat an identical GUID ?
this thing is extremely rare ... Prefers to win a lottery 😁
Click to expand...

Oh - nice one. Since GUIDs are supposed to be random and should be generated fresh each time one is needed it seems someone copied?
 
It's not something unknown because I have heard of it before, but extremely rare to the point that you have more chance of being struck down in a thunderstorm.
 
"128-bits is big enough and the generation algorithm is unique enough that if 1,000,000,000 GUIDs per second were generated for 1 year the probability of a duplicate would be only 50%. Or if every human on Earth generated 600,000,000 GUIDs there would only be a 50% probability of a duplicate."

Jup, extremely rare ^^
 
I wonder if the problem is that some don't use randomly generated GUIDS. I remember a library tool for FSX which just incremented the GUID for each new model, and I've recently seen someone post a MSFS XML file with incremented GUIDS. Make sure you use a proper generator for every GUID!
 
I think it was an Asobo object that was part of an update that matched mine. Originally, my object displayed just fine. Weeks later, it displayed the wrong object. If so, it actually happened to Asobo, not me.
 
Here is some interesting info about just how unique GUIDs "should" be: :idea:



As an alternative to use of online tools for GUIDs:


Here is some info about how to generate GUIDs on one's own Windows computer via PowerShell or the Command Prompt:

www.tenforums.com

Generate Globally Unique Identifier (GUID) in Windows

How to Generate a Globally Unique Identifier (GUID) in Windows
www.tenforums.com www.tenforums.com


FYI: Don Grovestine (aka "gadgets") included a GUID generation feature via .NET in this utility that has been available here at FS Developer for years:

www.fsdeveloper.com

GUID Processor

GUID Processor is a small utility developed for my own use that will: * create new GUIDs using the standard Microsoft NET.Framework capability, and * automatically convert GUIDs between FS9 and FSX formats
www.fsdeveloper.com www.fsdeveloper.com


NOTE: Years ago, a IMHO 'bad' idea used in certain tools generated sequential GUIDs based on code from one's network interface card or router.

Lets just hope Asobo does not get mixed up with all the GUIDs it may be attempting to monitor on each "unique" MSFS-2020 user computer: :rotfl:

www.tenforums.com

CLSID Key (GUID) Shortcuts List for Windows 10

Complete List of Windows 10 CLSID Key (GUID) Shortcuts
www.tenforums.com www.tenforums.com


GaryGB
 
Last edited:
rhumbaflappy said:
I just had an instance of a gltf I made that had a guid conflict. The model was processed through MCX, but that was not the problem. The guid did work in the past, but the new update apparently included a guid that matched mine. First time that ever happened to me. The end-result was my model was replaced by the new MSFS model. So it can happen, though extremely rare. So if your placement shows the wrong model, you may need to change it's guid in the gltf XML, and place the model with the new guid.
Click to expand...
Hi, how did you find this conflict and the corresponding GUIDs?
 
I found this by resuming work on my text scenery...C59. One of my models was replaced by another model. I didn't do it, and hadn't touched that model or it's placement in months. Changing the GUID was an 'educated' guess.
 
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