Unable to Download iOS Simulator Runtime 26.1 on Xcode — Bad URL Error (Code 49)

Question

Created Nov ’25

Replies 5

Boosts 8

Participants 7

Hi everyone,

I’m experiencing a persistent issue when trying to download the iOS Simulator Runtime 26.1 on Xcode (version 26.1). The download always fails with the following error

Download failed due to a bad URL. (Catalog download for com.apple.MobileAsset.iOSSimulatorRuntime)
Domain: com.apple.MobileAssetError.Download
Code: 49

I’m located in Brazil, so I initially thought it might be region-related, but I’ve already tried several attempts to fix it, including:

Using VPNs for the US and Europe
Installing the Xcode 26.2 beta
Downgrading Xcode to earlier versions
Reinstalling the same version of Xcode
Restarting Xcode and my Mac
Switching networks
Clearing simulator support/device files

Unfortunately, nothing has resolved the issue.

Is anyone else facing this problem? Does anyone know a workaround or a manual way to download/install the iOS 26.1 simulator runtime?

Thanks in advance!

Boost

Answer 1

Product Manager OP

Apple

Nov ’25

Thanks for reporting this. Most of the time, this is temporary and might be due to a network or firewall issue.

Could you try using the terminal, following this tutorial?

For example typing

xcodebuild -downloadPlatform iOS

0

Answer 2

jhonatantav OP

Nov ’25

I tried running the command as you recommended: xcodebuild -downloadPlatform iOS

But the error was:

{Error Domain=com.apple.MobileAssetError.Download Code=49 "Download failed due to a bad URL. (Catalog download for com.apple.MobileAsset.iOSSimulatorRuntime)"

Following the steps from the page you sent, both resulted in the same error. From what I can tell, it's failing to locate the official runtime version URL.

0

Answer 3

helasln OP

3w

I’m having the same problem as well. Just wondering if you were able to resolve it

0

Answer 4

VedantB OP

4d

Same issue, this is such a ridiculous error as it’s preventing any progress. Needs to be fixed asap

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Answer 5

garysmckiernan OP

4d

After clearing every cache I could think of I finally just reset the UI with

defaults delete com.apple.dt.Xcode 2>/dev/null || true

On restarting Xcode I had to re-add my account but I could then download the iOS Simulator 26.2 runtime.

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