So, now that I can finally can post, I hope that someone here can help me out.
I haven’t used bambu studio in 2 days, then I start it up and it just freezes, after searching for solutions online I tried doing a full reinstall. It somewhat helped, the app started launching but it wouldn’t download the required plugin, several hours, multiple reinstalls and firewall tweaking later I just manually installed the plugin, restarted the app and now it didn’t let me login, after about 3 restarts it finally let me do so, BUT, now I can’t import models. Another restart, and the app is back to freezing, sometimes it does launch without freezes but when it does, I’m just back to not being able to import models. I tried all solutions I found online but none helped so far.
If you’re using a VPN, try turning it off or setting a process exception. This thing phones home.
I do have a VPN, but I already have tried that, I turned it off, restarted pc but it didn’t help. It was working fine with a VPN on before the issue occurred tho
Little advice. We know from your post that BS won’t run on your computer. That’s it.
Would help if you give the version of BS, desktop/laptop and basic config of said computer. Also would help if you could show the model or link to it so others can try and replicate your problem. There are a few of us that run windows.
I’m curious because this is the second time I’ve heard this. Well the second time I cared to look. There’s something somewhere on the web concerning NVIDIA and BS.
Sorry, I rarely use forums, I tried the latest 02.56 version and the previous 01.60, both had the same problem, here’s my PC config, lmk if anything else is needed
This isn’t exactly the same problem but give it a shot:
Yeah I don’t see anything that should give him issues. NVIDIA thing would be the only thing I could think of.
I tried it, but that doesn’t help sadly
I can record a video to showcase the problem, idk if that would help
When you say freeze, do you mean you get the actual windows “process is not responding”?
Or that it stops rendering?
For what it’s worth I have a similar-ish hardware setup. 13700k, 4070 Super, Z790.
Another thing to try would maybe be to download prusaslicer and orcaslicer, and see if they run at all or if they fall to the same trouble. Orca and bambu have very common ancestry and prusaslicer isnt far behind
So, after a fresh install, it can’t install the plugin by itself, after adding it manually the app starts seemingly normally, but the model search tab is gone, then it goes Fullscreen and freezes with standart windows pop-up that the app is not responding, occasionally (every 10th or so launch) it starts properly with all tabs there, but whenever I try to download any model from the search it just stays at 0% download, and then gives me an error
A weird update, after a yet another reinstall I can’t login into my account, but the app itself works fine while I’m not logged in or while I can’t access online features
Orca slicer got the same issue of not being able to install the plugin, turning firewall off completely also didn’t help, so far I’m very confused and blame windows
If you haven’t picked up on the vibe around here, you’ve probably noticed there’s almost never any direct participation from Bambu staff. This community pretty much runs on users helping users. Once in a while, you might see a Bambu employee post instructions on how to submit a problem report, but that’s about it - and even then, it’s rarely useful. So we’re mostly on our own here. Thankfully, this community handles that part well.
Now, to make it easier for folks here to help you, it would really help if you were more specific. You’ve listed several troubleshooting steps you’ve tried, which is great - but the descriptions of what actually happened aren’t clear. Here are two examples where more detail could make all the difference:
-
When you say “you can’t log in,” please be specific.
- Can you log into Handy or the Bambu Lab website? That will confirm whether your credentials (shared across the Bambu Store, MakerWorld, and this forum) are authenticating correctly.
-
When you say you can’t import models, please clarify.
- Does that mean you can open Studio but can’t import an STL or 3MF file?
- What exact steps are you taking when you try to load a model?
- Are you connected to the printer at that point?
- Before using a downloaded model, try printing a simple cube or cylinder primitive. This helps determine whether the issue lies between Studio and the printer or just with model files.
Suggested First Steps (Troubleshooting 101)
It sounds like what’s happening is a cascading software issue rather than a single fault. I would recommend starting fresh by completely uninstalling Bambu Studio and clearing leftover data. From your description, the app seems to be getting stuck in a loop of corrupted settings, blocked plugin downloads, and partial recoveries after reinstalls. Each fix temporarily solves one symptom (freezing, login, importing) but triggers another. That usually points to corrupted user data, damaged configuration files, or network permissions blocking communication.
Before reinstalling, take a more controlled approach: clear all Bambu Studio user data, verify the plugin and cache folders are fully deleted, and temporarily disable any firewall or antivirus that could be blocking plugin downloads. Starting from a truly clean state often resolves this kind of repeating failure. When I’ve run into this on my own machines, I use what I call the “nuke” option to completely sterilize leftover bits of uninstalled program elements.
How to clear Bambu Studio cache and configuration files on Windows:
- Close Bambu Studio completely. For good measure, reboot your machine to ensure it isn’t stuck in memory.
- Uninstall it. If you’re comfortable working in Windows, consider using Revo Uninstaller (free version) instead of the built-in Windows uninstaller. It performs a deeper cleanup, including leftover registry entries. Note: this will remove all your Bambu Studio settings, but at this point that’s desirable for a clean slate. Download Revo Uninstaller Free - Remove unwanted programs easily
Proceed with caution as revo uninstaller may attempt to remove all dependent libraries needed by other programs such as the .NET libraries, uncheck those when running the Revo tool. If you goof, the Bambu Studio installer will try to reinstall it for you but you may have to resinstall other affecter programs to or just download the .NET libraries from Microsoft.
- Press Win + R, type %AppData%, and press Enter. This opens the Roaming AppData folder.
- Delete the BambuStudio folder if it exists. (Tip: you can check for this folder before uninstalling - as outlined in step 2 above - to compare before and after and confirm that everything is removed.)
- Navigate back up one level in File Explorer to the main AppData folder, then open the Local folder.
- Delete any BambuStudio or Bambu Lab folders found there.
- If you don’t see an AppData folder, it may be hidden. To reveal it:
- Open File Explorer.
- Click View > Show > Hidden items (Windows 11) or View > Options > View tab (Windows 10), then enable “Show hidden files, folders, and drives.”
- Alternatively, type %userprofile%\AppData directly into the File Explorer address bar and press Enter.
- (Optional) Check %ProgramData% for a Bambu folder and delete it if present.
- Also check C:\Program Files and C:\Program Files (x86) for any leftover Bambu folders and delete them if found.
- Empty your Recycle Bin.
- Reboot your PC.
- Reinstall Bambu Studio from the official site.
This process clears any corrupted cache, plugins, or lingering configuration files that might be causing these issues.
These steps will ensure that the application is fully reinstalled. Based on your last post about being unable to install the plugin, I suggest you try this procedure first before troubleshooting the plugin failure itself. I’ve personally seen cases where Bambu Studio reports a “can’t reach server” error when the real cause was a Windows security restriction on the file. The program throws a default connection error that has nothing to do with the actual fault.
Last note: I always uninstall Revo Uninstaller after cleanup. It turns into nagware after your next reboot asking for money, but it’s still one of the better uninstall tools available.
Scrolling through different posts I kinda picked up on that vibe, sorry if I’m not being clear enough, english is not my native language and I usually never ask for help online, mostly fixing things myself or by asking my friend to help, but on this topic I unfortunately don’t know anyone, so I wasn’t been able to find the issue.
1 Firstly, by saying that I can’t login I mean just the BS, handy works fine, and I can login in browser, but when I try to login in BS it gives me the login failed error, BUT, if I keep trying to login it eventually does, don’t know why.
2 Secondly, if the app opens correctly, the printer automatically connects, I try to get any model from online in BS, press install and open, and it fails to download the project with the following error
If I try opening a downloaded stl or 3mf file, it opens, freezes a couple times, then shows the file, but then it shows that my printer is not connected for some reason, and while trying to navigate the menus it occasionally keeps freezing.
I tried doing the complete reinstall, but I used BCUninstaller instead of Revo, I’ll try that again with Revo but doubt It’ll help.
I’ve been trying to deal with this for the last 5 hours, and currently I’m on the verge of reinstalling windows in hopes that it’ll fix this.
Thanks for posting the clear information. If you’re using BCUninstaller, that’s a perfectly good alternative to Revo. No need to run both - they perform the same function.
Let’s focus on one thing at a time. In this case, the MakerWorld download. For troubleshooting, let’s save MakerWorld models for the final step.
You didn’t mention it, but I suggest confining your testing to models already stored locally. Better yet, start with a simple primitive such as a cube. Troubleshooting works best when done in small, controlled steps.
First, verify that your system can reliably send a model to the printer. You don’t have to complete the print - just confirm that you can send and start a job. Repeat this three times, rebooting your machine between each attempt. If that works consistently, repeat the same three tests, but instead of rebooting the PC, power-cycle the printer between runs. This will confirm whether your configuration can return to a stable, repeatable state.
Also, what printer model are you using? Not that these troubles shooting steps are any different between models, I’m just curious.
I’m using P1S, so I added a model in the currently working instance of BS, tried to print it but it came out with an error
after restarting I wasn’t been able to open BS again without it freezing and crashing yet, but I know if I keep trying it’ll open eventually.
Sending a print through handy works just fine tho.
Someone else with that same error (3010). I’m wondering if that outage from yesterday isn’t completely cleared up yet.
That’s a very important data point. Thank you.
Based on this, the issue appears to be with your system’s connection to the Bambu Lab servers. We can be confident in this conclusion because you’ve verified that the printer’s connection to the cloud is working and that it can print successfully. This may seem like a small point, but it eliminates a major branch of unproductive troubleshooting.
Next, let’s confirm that your PC’s connection to the Internet is stable and that there are no service issues. Visit the status page at https://status.bambulab.com/ and make sure all indicators are green.
If everything looks normal, the next step is to temporarily disable your Windows Firewall and test again.
If the status page shows warnings, unfortunately you’ll need to wait until Bambu resolves the server-side issue on their end. There’s nothing you can do from your desktop to fix that. As a temporary workaround, you could connect your system through another network such as a VPN or your cell phone’s hotspot, but the goal should be to restore normal connectivity on your main network.
- Press Windows + R, type
control, and press Enter. - In Control Panel, select System and Security.
- Click Windows Defender Firewall.
- In the left pane, click Turn Windows Defender Firewall on or off.
- Under both Private and Public network settings, select Turn off Windows Defender Firewall (not recommended).
- Click OK to apply the change.
If you receive a Windows security alert that the firewall is off, that’s expected. Now rerun the Bambu Studio test and check whether the behavior changes.
That would make sense, since the only thing that changed on my pc since BS stopped working was installing Cronos, and I doubt a game would kill an app