What are the desktop system requirements for Cities Skylines (v1.21.1-f9)?

Cities Skylines (v1.21.1-f9) requires a 64-bit desktop operating system (Windows 10/11 or macOS Sonoma/Sequoia), a quad-core CPU (Intel Core i5 / Ryzen 5 / Apple Silicon M1+), and at least 8 GB RAM.

How do I install Cities Skylines (v1.21.1-f9) without errors?

Extract the downloaded archive using 7-Zip, WinRAR, or Keka into a clean directory, whitelist the folder in Windows Security (or clear macOS quarantine via xattr -cr), and run the executable.

Will updating Cities Skylines to v1.21.1-f9 keep my existing settings and saves?

Yes, user profiles, presets, and save files are stored in your local AppData or ~/Library/Application Support directory and remain intact when upgrading to v1.21.1-f9.

Cities Skylines Crash on Startup, Missing DLL, Gatekeeper & Launch Error Fix (2026)

Cities Skylines Crash on Startup, Missing DLL, Gatekeeper & Launch Error Fix (2026) cover

v1.21.1-f9

How To Install

Pre-Installed

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GameApplication

Cities Skylines Crash on Startup, Missing DLL, Gatekeeper & Launch Error Fix (2026)

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PC 10.6 GB 2026 Published on, Oct 17, 2026 Last Updated - Nov 15, 2026 [v1.21.1-f9]

v1.21.1-f9

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Fix Cities Skylines (v1.21.1-f9) startup crashes, permission errors, missing dependencies, and desktop configuration issues on Windows 10/11 PC & macOS Desktop via AnkerGames.

Release Group / Clean Pre-pack Released / Jan 01, 2026

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Genres GameApplication Building

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Cities Skylines Crash on Startup, Missing DLL, Gatekeeper & Launch Error Fix (2026) Free Download - Game Review

Quick Fix for Cities Skylines Crashes & Launch Errors: Over 90% of startup crashes, missing DLL errors on Windows, and Gatekeeper prompts on macOS in Cities Skylines (v1.21.1-f9) are resolved by installing vc_redist.x64.exe, whitelisting the folder in Windows Security (or running xattr -cr on Mac), and launching as Administrator.

→ Download Clean Verified Build of Cities Skylines (v1.21.1-f9)

Common Cities Skylines Desktop Errors & Proven Solutions

Issue / Error Message	Root Cause	Step-by-Step Fix
Crash on Startup / Silent Exit (Windows)	Missing Visual C++ Runtime or Admin privileges	Install VC++ 2015–2022 (x86 & x64) and enable Run this program as an administrator.
Missing MSVCP140.dll / VCRUNTIME140.dll	Corrupted Microsoft C++ runtime libraries	Reinstall the official Microsoft Visual C++ Redistributable package and reboot your PC.
Missing steam_api64.dll / Activation DLL	Windows Defender quarantined the offline loader	Open Windows Security → Protection History, restore the file, and whitelist the folder.
"App Is Damaged and Can't Be Opened" (macOS)	macOS Gatekeeper quarantine flag	Run `sudo xattr -rd com.apple.quarantine "/Applications/Cities Skylines.app"` in Terminal.

Related Guides: Main Download Page | Installation Guide | System Requirements

Cities Skylines – Windows 10/11 & macOS Configuration, Preset & Save Data Paths

When backing up user profiles, presets, or local save data between a Windows Desktop workstation and a MacBook Pro/Studio for Cities Skylines (v1.21.1-f9), check these default desktop directories:

Desktop Platform	Default User Data / Config / Preset Directory	Backup & Migration Notes
Windows 10 / 11 (x64)	`%APPDATA%\{Cities_Skylines}\` or `%USERPROFILE%\AppData\LocalLow\{Cities_Skylines}\`	Back up this folder before installing a newer version or resetting preferences.
macOS (Apple Silicon M1–M4 / Intel)	`~/Library/Application Support/Cities_Skylines/` & `~/Library/Preferences/`	Use `Cmd + Shift + G` in Finder to open hidden Library paths directly.

Release Metadata Summary – Cities Skylines

Title / Package: Cities Skylines
Verified Build Version: v1.21.1-f9
Archive Size: 10.6 GB
Category: GameApplication, Building
Target Desktop OS: Windows 10/11 (64-bit) & macOS Desktop (Apple Silicon M1/M2/M3/M4 & Intel)
Primary Download Hub: Download Cities Skylines (v1.21.1-f9) Full Desktop Build

Frequently Asked Questions – Cities Skylines (v1.21.1-f9)

Is Cities: Skylines completely free?

The package listed here is offered as a free download at version v1.21.1-f9. Note that the official Steam edition is a paid game — Valve lists Cities: Skylines as a paid title, not free-to-play.

How do I install Cities: Skylines from this package?

There is no setup wizard. Extract the archive to a folder excluded from your antivirus, install the apps from the Redist or _CommonRedist folder, then launch Cities Skylines.exe inside the game folder as administrator. Full details are in Installation Guide.txt.

Does this download include the DLC expansions?

No. This is the base game package. The site admin has confirmed mods are not part of the download either, so you would need to source expansions separately.

Which platforms support Cities: Skylines?

Valve lists Windows, macOS, and Linux support for the official Steam edition. This package is listed for Windows, macOS, Linux, Android, and iOS.

Why does the game crash a few seconds after launching?

In our testing, the most common cause was skipping the Redist folder installation or extracting the archive inside an antivirus-scanned directory. Install the redistributables first and run the executable as administrator.

Can I use mods with this version?

The official Steam edition supports Steam Workshop and an included level editor. This package does not, and the site admin has stated they do not work on mods for it.

Installation Guide

Step-by-step setup process

Game is pre-installed / portable, therefore you do not need to install the game.

Just extract the rar / zip file using 7-Zip or WinRAR.

Simply launch the game directly from the game executable as Administrator.

Important Notes

Install necessary apps from Redist or _CommonRedist to ensure game launches without problems.
Always extract game in Antivirus / Defender excluded folder to prevent false-positive file quarantine.
Always run the game as administrator.