I know about the compatibility lists but I have over 1,200 addons for 2020.  I know that most addons will work OK in 2024 but might have minor problems and might be less than fully functional.

But - I am constantly experiencing the most annoying problem of extremely long 2024 loading times and often a hangup at 92% - 97% loaded and then nothing happens except for the long loading time report (report-loading.toml) which provides no useful information about which add on caused the problem.

I have  all my MSFS files spread across three NVMe drives and a consistent 900+Gbs connection.   With an EMPTY community folder - the sim consistently takes 6-minutes (+/- 10 seconds) to drop me at the main menu.   When I put an incompatible addon in the community folder it usually takes nine to ten minutes to get to the Main Menu.  Or, more likely the sim hangs at 92% (or more) and never finishes loading/activating.  And, even getting to the main menu is no guarantee the addon is going to work.

When things are working correctly - in Free Flight after pressing START - the sim drops me at the start location in about 50-seconds.  But, with an incompatible addon the sim might spin for many minutes and never actually get to my departure location.

How do I test addons when it takes about 10-minutes of slow 2024 sim loading to eventually find out the addon is incompatible with 2024?

Try Addons Linker.

https://flightsim.to/file/1572/msfs-addons-linker

I believe it has a tool in it that checks the files, to some extent.

AddonsLinker is my most valuable tool but I do not know how to use it for a compatibility check. 

Under tools (in addons linker) there is "check addons" . Not real familiar with this program. Does work nice for keeping things nice an tidy.

just try it

1 hour ago, jason74 said:

just try it

Try what?

It takes over 10 minutes to find out if an add-on is incompatible. If I have three or four add-ons in the community folder, then how do I know? Which one is the problem?

3 minutes ago, TacomaSailor said:

Try what?

It takes over 10 minutes to find out if an add-on is incompatible. If I have three or four add-ons in the community folder, then how do I know? Which one is the problem?

take  out 2  addons   see  if  it  works  if  not  than  you know  its  the  other  two,  than its  a  repeat  again   take  out  one of  the  2  addons  see  if  it  works  if  it  does   than  you  know  which addon  is  causing  the  issue

Check developer forums/discords to see if they are even saying things work.  Some popular stores will show if something is being sold as "2024 compatible" (although things could still work).  

If nobody at least is reporting it works, hold off on it.  Otherwise go one at a time and see what happens.  Better off to let developers update things before going nuts with add-ons.  It is frustrating, but going 1-2 at a time with trial and error is more frustrating.  

I'm sticking with a minimalist approach for now until more updates come out.  

22 minutes ago, TacomaSailor said:

Try what?

It takes over 10 minutes to find out if an add-on is incompatible. If I have three or four add-ons in the community folder, then how do I know? Which one is the problem?

It's tough if you have many add-ons.   I tend to take advantage of my fellow fs'ers, because if I haven't tested an add-on, odds are someone else has tested it.    So I might google "Azurpoly C160 MSFS2024" and see what I get.

It's still slow and tedious.  But faster than guinea-pigging it (just copying it over and hoping for the best)

There isn't any good solution that I can think of.  So far I have only loaded in maybe 5-6 add-ons into my 2024 setup.

2 hours ago, TacomaSailor said:

Try what?

It takes over 10 minutes to find out if an add-on is incompatible. If I have three or four add-ons in the community folder, then how do I know? Which one is the problem?

Just add it to your community folder via add-on linker and see if it works, its really not difficult.

My usual debug procedure for problematic addons using Linker is to split the active ones in half, then test each half. Then split the "dodgy" half in half again and retest.

Repeat until you've zeroed in on the offender. This isn't new (or exclusive to MSFS) - it's a standard developer debugging method.

18 hours ago, Adamski_NZ said:

My usual debug procedure for problematic addons using Linker is to split the active ones in half, then test each half. Then split the "dodgy" half in half again and retest.

Repeat until you've zeroed in on the offender. This isn't new (or exclusive to MSFS) - it's a standard developer debugging method.

I coded that method into a search procedure I wrote in QuickTran in 1968.  I used the technique a lot in MSFS 2020.

However, it takes 10-minutes of MSFS loading to determine if a group of addons is going to work OK.  If I start with 4 and it fails - 10-minutes, split in half and it works - 6 minutes, split other in half and it works 6-minutes, then 10-more minutes to verify remainder addon is offender.  

That sounds like I can test only a couple addons per hour . My normal load out (Community Folder) in MSFS 2020 is usually more than 30-addons.  I guess it will be awhile till I can use all those nice addons/enhancements in 2024.

My fundamental problem is I mistakenly believed the MA/Asobo commentators told us the vast majority of addons would work OK in MSFS 2024.  I've now found dozens that cause a "failure to launch" and hang at 92%.

Oh Well - I guess I just wait for all the free (and so generous) developers to get their wonderful (and free) addons updated for 2024.

Step One: Contact developer.

If that doesn't work. Ask someone at AVSIM.

Final step, test the add-on and see for yourself.

22 hours ago, pete_auau said:

take  out 2  addons   see  if  it  works  if  not  than  you know  its  the  other  two,  than its  a  repeat  again   take  out  one of  the  2  addons  see  if  it  works  if  it  does   than  you  know  which addon  is  causing  the  issue

I spent the better part of 3 days doing just that.  And with Addons Linker I routinely load only those addons that I specifically need for the next flight.  At the oft reported loading halt at 97% I am unable to leave the sim other than through Task Manager.  That then logically requires a system reboot.   So I reversed the process.  Instead of removing addons one at a time, I started bare bones and instead added addons one at a time.  Still a horribly painstaking process. 

I could have logged over 20 hours in MSFS 2020 over the same two day period.  Instead in 2024 I logged none. Zero.  That will not continue.  I can revert and enjoy, and wait this out, again.  But I will not continue to chase my tail, or anyone else's.