Again, 2 Weeks gone.. Still no solution..
An update from a staff member would be much appreciated
I have been dealing with this issue since early December last year. So far, I have had two tickets with FAB support over this. Both times I was told they were investigating the issue but then I received no further updates.
I have tried clearing the caches, deleting temp files, reinstalling engines and the launcher but nothing seems to help. I can install other plugins just fine but both my published plugins fail to install.
I have received a negative review on my plugin and the customer claims that they cannot install the plugin on 5.6 and 5.7. The issue is that I locally tested the plugin prior to shipping and it works with both of those engine versions. Now, I cannot tell if the issue is with my code or itās something else that is preventing the customer from installing the plugin since I cannot download the plugin from FAB and install it on my own due to the IS-0009 bug affecting me.
This whole situation has been really disheartening.
@Urooj.shahzadi Any Update?
Iām having the same problem when attempting to install my own plugins. Iāve only tried on 5.6 so far.
I am honestly happy that this is getting a bigger issue. I have already been waiting for 6 months, and nothing has happened so far. The more people complain the higher the probability it gets fixed
2 Likes
18 Days laterā¦
86 Days since this Topic started!!!
Issue still exists..
I currently question if the support is doing ANYTHING at all.. or completely ignore the topic?
Would someone from support whoās actually working please finally respond to all of this and provide a solution?!
Even my email to support hasnāt been answered in over a month!
Same problem for monthsā¦
yet another system breaking problem in the FABulously terrible engine.
@Tim_Sweeney Fix your own store and engine first before throwing shame at others, lead by example.
The listings_v1.db file in the EpicGamesLauncher\VaultCache\FabLibrary path seems to have 0 rows for the listings, must be a complete server side issue.
I need to use Pico OpenXR with Unreal Engine 5.7 - but the Plugin can still not be installed - resulting in the same IS-0009 error no matter how many times I delete and re-install Unreal Engine 5.7.
None of the suggested fixed helped 
Adendum: The advice from rwk326 to delete EPIC Launcher files did not help - but it made the Unreal Engine environment forget all the installed Engine versions - I had to delete them in Windows explorer and re-install them.
What DID help was to log out of my EPIC Games library account, create a new account and then with that new account download and install Pico OpenXR into all the projects ā¦
I would think, that this solution works also for all other download problems with the IS-0009 error message.
My conclusion is that the issue is NOT with the FAB or Unreal Engine 5.7 - but with the way the EPIC Launcher is handling user related library data!
Hey everyone 
The dev and product teams are still actively investigating this issue. Once we have more information I will absolutely update this thread.
Thanks!
Yep - also still have the problem..
Since November 2025ā¦
Same issue since October 2025.
Fab support is absolutely useless. They do nothing and donāt provide any update on the matterā¦
I have a spare computer at home, so I installed a fresh UE on the new pc, logged into my account and I got the same error.
If thatās not a proof that the error is server side, i donāt know what else will prove it.
Anyway, still looking for help on this one. This is VERY annoying especially when you want to provide support to your customer and do bug repro on the FAB VERSION of your pluginā¦
Please do somehtingā¦.
1 Like
Iām having the same issue here, and I canāt even provide support for my customers because I canāt even download my OWN plugin from fab. this is absolutelly ridiculous, if it was like a two weeks old bug, but people are complaining since october!!! Do something FAB. If anyone find any way to fix this, please share here, Iām sure many devs (including me) would really appreciate it
1 Like
I was also having this issue, but I tried to install the problematic plugin from Fab wepage instead, and it worked fine (it might take you to the produtās own page viewed from the Epic Launcher, from where you will be able to press Install button)
Heya
The team has implemented a work-around for you. Could you test whether or you are able to download/install Bobs Library now?
Thanks!
well it sorted it self out on third attempt, dont ask me how, it just worked.