FS24 Rolling Cache continuously reverts to 0GB

User Support Hub Install, Performance & Graphics
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SIM INFORMATION
Microsoft Flight Simulator 2024
Version Build Number 1.1.7.0
Game Platform Steam

ISSUE DESCRIPTION
After redirecting the rolling cache to a custom location other than C drive, the sim continiously reverts the size of the rolling cache to 0GB as soon as settings are saved and one returns to gameplay from the settings menu.

Did you remove all your community mods/add-ons? If yes, are you still experiencing the issue?
0 mods installed…

FREQUENCY OF ISSUE
100% time

REPRODUCTION STEPS
Please list clear steps you took in order to help our test team reproduce the same issue.
See above…

Please state your Graphics Card Driver Manufacturer (NVIDIA, Intel, AMD) and Version
Nvidia 566.14

Please add a screenshot or video of the issue occurring.

image
image1920×1080 83.8 KB

1 Like
2

Just a little check…

  • You did create folder “G:\SteamLibrary\MS24 Rolling” in file explorer previously, right?

  • Please, try to rename it to “G:\SteamLibrary\MS24_Rolling” (with this _ in name)

  • You do have at least 16GB free space on G: drive, right?

I hope this might help you

3

I have the same issue. I can’t even change the location of the rolling cache; it always reverts back to the default.

4

Thanks for the suggestions @GentleBreeze855.

It turns out deleting the ‘ROLLINGCACHE.CCC’ file and then reselecting the desired directory allowed it to stick.

2 Likes
5

I still cannot make the rolling cache in settings “stick” in a different folder. It always reverts back to the original location “…AppData\Roaming\Microsoft Flight Simulator 2024”. This is on Steam.

It may be that the settings menu is showing the wrong location (bug), but maybe it’s actually setting it right…

6

Could you give the location of that file, I can’t find it anywhere

7

These are steps you should do to transfer rolling cache path:

  • Create folder in location you want rolling cache (RC) to be
  • Make sure new location have at least 20 GB of free space
  • Do not make space in newly created folder name
  • Go to game settings and enter full path of new folder in plane format like this D:\FS24_RollingC
  • Dont enter something like “D:\FS24_RollingC” - dont use “” in path
  • Click on “Save and Exit” in Online Settings within a game
  • You will see on screen process notifying you that game is creating new cahce
  • When you quit game, go to old place “%appdata%\Microsoft Flight Simulator 2024” and delete old rollingcache.ccc
    This must work
    Enjoy!
1 Like
8

This doesn’t happen for me at all.

Also don’t see rollingcache.ccc file Microsoft Flight Simulator 2024 folder

1 Like
9

I’ve updated my Rolling Cache to 30GB from the default 16GB and saved - a pop up says updating go back to flight and then come back in to check Rolling Cache and it states 0GB - NB I also changed storage Folder for Rolling Cache to a new drive. Can’t understand why it appears to save then doesn’t?

1 Like
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I have the same problem. My install directory is O:\Games and I want my RC to be on the same drive. but MSFS keeps showing as 0.0 and never creates the ccc file. Usually when you make a new RC, a pop-up appears with % completion. When I hit save and return it doesn’t show this.

And yes, I’m hitting return after entering the cache size

11

This file is in
%appdata%/Microsoft Flight Simulator 2024
Just copy this line above and paste it in file explorer. Just be carefull. You do not need to delete this file just so you can have it in another location.
Game must create it by it self.

12

Please, don’t find this question in wrong way, but did you check if you have more than 16GB space on O: disk?

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yeh, not a problem - have 1.7TB available :wink:

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Update - fresh re-install fixed it.

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Following the above steps and not seeing that part happen. Maybe due for yet another reinstall lol

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Has anyone else noticed that the rolling cache file automatically appears as a file sized 16GB or 32GB (or whatever you have set it to) as soon as you select the cache size in MSFS?

Ie it doesn’t fill up as you fly around and cache scenery and aircraft? Seems bizarre to me?

17

Moved to User Support Hub Install, Performance & Graphics since a solution has been marked.

18

I don’t see a ‘rollingcache.ccc” file anywhere on my PC…

Oddly, even if I leave it on the C: drive it still reverts back to 0.0 G

2 Likes
19

Just because it was a solution for one person doesn’t mean it is a solution, clearly by all the other posts below that person solution isn’t working for everyone

3 Likes
20

That was always the case and has a plausible explanation (guess … as I do not know the actual source code).

When you change the size you always did / do get a panel which tells you that preparing the cache will take some time and that you have to wait.

Basically the sim does “pre-format” the cache “drive” (file). This has some major benefits:

  • The file has the final size and the sim can be sure that in the future the disk space will belong to the sim.
    • So the sim can never run into the problem of trying to grow the file and getting a “drive full, sorry” error.
  • A “pre-formatted” (e.g. zero-filled?) file can be somewhat faster in the “access” because …
    • you can ask the OS to memory map that file into your process and then you can write to it like if it were real memory
    • or even if you access it as a normal file, you can seek to random positions and write data in that slot.

Now the primary question of this topic was resolved … but I still hope you find the above ideas for “why a zero fill to max size” useful.

PS: I will open another topic as I would be interested to find people who really “studied” the rolling cache. There are many things which “make no sense” to me … e.g in the Resource Monitor I can only see “read” access to the RollingCache.ccc … but never any write operations. I find that somewhat … confusing.

1 Like