That’s the point my friend. I suggest you to share this info in your post above, people can get a lot of damages in their system trying to play around with permissions. Thank you!
Maybe someone can help you to convert your mod to a community folder mod. Guess! 
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It doesn’t, and it’s a big step back instead of forward. It’s nice to have real-time METARs, but they render globally, which means all you see out the window to the horizon is what that particular station is reporting. Also, checkerboard storms again. Also, fewer cloud models show up with REX, so we get a lot of repetition- just like X-plane. Default, even without real-time METARs, is by far better. by far.
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The default weather engine is superior to what REX is giving us. I just hope Asobo incorporates real-time Metars into the sim soon. REX found a way to give them, but they don’t render properly, and they certainly don’t take advantage of the MSFS engine, so the clouds we get are repetitive and lack variety. No fog either.
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I like MSFS’s concept of using a weather model based on forecasts to accurately generate weather phenomena. As much as I do agree that the way it’s implemented right now is underwhelming and doesn’t paint an accurate picture, I think just taking METARs and forcing it into the sim the way Active Sky and REX do it is not the way to go and it’s a bit of a step back.
METARs exclusively measure the average wind, visibility, and cloud coverage at a very specific moment in time, and weather programs grossly inject it in as true for the entire 60 minute period of the METAR and apply it for the entire airport and its vicinity.
- Morning fog is a very shallow (50’ thick max?) phenomenon that lasts ~30 minutes tops. a METAR report capturing that will cause Active Sky or REX to report dense visibility of 1/16SM for at least a few thousand feet for the whole hour.
- One thunderstorm in the vicinity of an airport reported in the METAR causes weather programs to wildly inject thunderstorms over and around an airport.
- Calming of winds in the evening is a very sudden thing, but doesn’t get reported in the METAR accurately.
The move away from METARs (snapshots) towards weather modelling (which is more dynamic) is the right thing to do.
However, Asobo’s implementation isn’t without criticism: if you’re using a forecast model, you should at least use real-time weather reports as inputs to your live weather model (specifically to find out where the forecast deviates from reality and interpolate where there is a difference)
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Here are some things that you can try, as described in this post:
https://www.maketecheasier.com/access-windowsapps-folder-windows-10/
Try reading the manual first. Watch the youtube video review first. Most of all the questions of use are anwersed on how to use CORRECTLY. How can you give opionions of something you have not used or read how to use. I know understand why Asobo passby some of the bug reports from all you nervous cats. Wow
To chime in here, I was always happy with REX products in the past. The idea of a payware 3rd party “fix” to enhance the weather issues in MSFS for $20 ish doesnt really sit well for me. However, as I tend to explore a lot of addons for this sim I was curious. Having downloaded REX I can say that the program is extremly rough and buggy. Its slow to load and for most of Europe - the default weather system is far more superior. When running REX the latest METAR info is 24 hours old.
When in the US its better but still leaves alot to be desired…
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Ahh,the good old Take ownership hack. I used it for Win7 modding,back in the days.
But unfortunately, even this hack didn´t work. And I already have the acess to the WindowsApps folder.
So,you mod didn´t work for us non steam users.
What does that even mean, use the manual for AS16? You just start it and connect it to FSX. And thunderstorms depicted never line up with their real world counterparts.
Use the manual on REX? I know the engine uses METARs, and I just explained why it’s not a reasonable method of determining weather solely, you need more information and dynamic weather modelling based on raw data and forecasts.
Use the manual for MSFS? You just select live weather and go???
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Man you made me laugh!!! 
That is so so true! How many home-made-sandwiches did fall on my yoke this way!
I couldn’t expect that we will have the same bad experience like you describe, it was years ago! First especially after MFS2020 was released because I believed that the new Sim was full of realistic and accurate meteorological phenomena as it was annonced, and secondly I couldn’t expect ever that a new engine-weather as REX will create such brutal change weather conditions in one nano-second like back in the days after it got released! How could it happen? (Sincere question, no irony here) did they check and test before releasing their product? Do they have enough auto-criticism? or they just say" let’s invest our creativity in marketing/advertising more than taking our time to build a reliable and solid product instead of rushing it to the release date?" I don’t know but how could it be released this way? …
What a crazy virtual/business world, Unfinished Products/Broken Products: the new business standard! But please don’t complain or you will be crowned as a “negative person” who spreads “negativity” around 
: the new diktat 2.0! 
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which is hilarious because there’s nothing even close, injecting METARs is horrible 
Well in defense of REX injecting METARs, it does solve the alignment problem in use cases like VATSIM.
And, the “live weather” that is built in has a number of major issues right now. Once/if those get solved, then we’ll be able to do a proper comparison.
I was running some testing in MSFS live weather against what’s reported on MeteoBlue (TAF/METAR) Map here. I have done the following: KJFK, KMIA, KSFO, RTJJ, ZSPD and EGLL. I found the results not perfect but quite satisfying.
There a few interesting but reasonable observations:
- There’s a delay in the live weather data which I found to be ~10mins from MB’s METAR map to MSFS
- Change in altitude, even by 200ft, could produce different wind direction and speed (even though wind shear was not reported; maybe there’s a threshold to be considered as wind shear)
- The live weather in MSFS is usually in between the most recent METAR and TAF. For instance, if the most recent METAR was 50min ago and wind was 180/5kt and TAF for the next 2 hours is 120/4kt, I would find MSFS reports 130/4kt or so.
- Few Clouds was displayed as Clear Sky in KSFO/RTJJ
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doesn’t that just seem like business as usual? Why would they attack it from this angle? Makes no sense to me to go back to a system that nobody really liked to begin with in the other sims.
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What alignment issues are you referencing? VATSIM does not require you to set any common weather, nor do you have to adhere to VFR/IFR conditions, or even time of day.
What about the Dynamic changing weather scenarios in REX, does it work fluidly dynamic without any sudden weather switching?
Currently that’s one feature I would be willing to pay for, because MSFS doesn’t do this. By default you either get static weather everywhere from a preset or live weather.
Dynamic non-live weather sounds interesting.
While I haven’t done testing like you, I have been using live weather…in the USA mainly. I’ve not suffered the clear sky issue that a very few have. My live weather is very satisfying, and aligns closely with what’s actually occurring. The native weather engine dynamic change is one of the biggest leaps forward in flight simming history. I’m sorry, but reverting to a METAR to METAR with hard data reset interpolation in between, is yesterdays answer to flight sim weather injection.
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It isn’t’ a requirement but it is nice to have congruency. The VATSIM controller is going to read you the actual METAR.
From my understanding (and I could be wrong on this), due to the current limitations of the SDK, it wasn’t possible to integrate what REX has done with Weather Force into the current weather model of MSFS to create a dynamic weather environment similar to what you get with MSFS default live weather. This is exactly why HiFi has yet to work on anything for MSFS, and stated as much when they said Active Sky would not be incorporated into MSFS until the SDK improves.