Why does Microsoft Flight Simulator take so long to load?

Microsoft Flight Simulator 2020 and 2024 usually take a long time to load because they scan installed packages, check updates and licences, synchronise cloud data, and initialise online services. Large or faulty add-ons, slow or nearly full storage, antivirus scanning, damaged caches, and network delays can extend that process considerably.

What makes MSFS startup take so long?

The stage at which MSFS slows down usually identifies whether packages, storage, updates or online services are responsible. Loading the executable is only part of startup: the simulator may enumerate package manifests, validate content, contact account services and rebuild data after a change.

MSFS 2020 commonly develops a large local package library, so thousands of aircraft, livery and scenery files can make package scanning slow. File count and manifest condition often matter more than total download size.

MSFS 2024 relies more heavily on streamed data, but it still checks local packages and requires authentication services. An SSD cannot compensate for a conflicting add-on or an online request that never completes.

How do I make Microsoft Flight Simulator load faster?

The fastest diagnosis is a clean launch without third-party content, followed by storage, cache, network and repair checks. Change one thing at a time so that a naturally faster second launch does not conceal the actual cause.

1. Identify the slow stage. Note whether the delay occurs before the loading screen, during an update or cloud synchronisation, or after the loading bar appears. Continued drive or network activity usually means MSFS is still working.
2. Finish updates and restart completely. Do not force-close MSFS while it is downloading, decompressing or validating packages. Close the simulator and launcher, restart the device and try again; the first launch after a simulator, content or graphics-driver update can be slower.
3. Test an empty Community folder on PC. Move its contents to a temporary folder outside the package tree without deleting them, and never rename or remove the Official folder. Store, Steam and custom installations can use different package locations, so confirm that you are changing the active folder. If Safe Mode appears after an abnormal shutdown, it provides another useful stock-content test.
4. Restore add-ons by halves. If the clean launch is faster, return half the packages and repeat until the culprit is isolated. Check duplicate versions, outdated scenery, incorrectly nested archives, malformed packages and symbolic links pointing to a disconnected drive. Two add-ons can also conflict even when each works alone.
5. Check the installation drive. Use an SSD where possible and maintain useful free space. Mechanical disks, crowded drives, slow USB or network storage, and external drives waking from power saving can make thousands of small package reads painfully slow.
6. Rebuild the rolling cache only when justified. In MSFS 2020, delete it through the simulator's Data options, restart and recreate it only if you use streamed scenery. A large cache does not automatically shorten startup, while rebuilding it can increase later downloads.
7. Run one offline test. Turn Online Functionality off temporarily. A clear improvement points towards authentication, connection or service delays rather than local files; restore it afterwards if you want streamed imagery, photogrammetry and live services.
8. Inspect security scanning. Check whether antivirus activity dominates disk or CPU use or repeatedly quarantines package files. Do not disable protection permanently or exclude a general Downloads folder; use only narrowly scoped exclusions for trusted simulator directories when necessary.
9. Remove unused optional content through the simulator. The content-management interface can remove aircraft, scenery and world packages you never use. Leave core packages alone and do not delete files indiscriminately from Official, which can trigger a large re-download.
10. Repair files last. Use the installation platform's verify or repair facility only after testing add-ons, storage, caches and online services. Back up Community content and record any custom package location first because repair behaviour varies by platform.

What should Xbox and PlayStation users check?

Console users should fully quit the simulator, restart the console, check account and network status, and test without unnecessary optional content. Xbox Series X|S users should quit MSFS from the dashboard rather than resume a suspended session. Consoles have no PC-style Community folder, although installed Marketplace and optional packages can still increase startup work.

Is a slow first launch normal?

One slower launch is normal after a simulator update, graphics-driver installation, large content change or cache rebuild. Repeatedly slow starts with no recent change usually indicate packages, storage, security scanning or an online-service delay.

Do not judge the simulator as frozen merely because the loading artwork pauses. Package indexing and cache rebuilding may show little visible progress while drive or network activity continues.

When is slow loading actually a failure?

MSFS is probably stuck when it stops at the same point across several launches with no meaningful drive or network activity, becomes unresponsive, or leaves update and sign-in messages unchanged indefinitely. Our checks for distinguishing a genuine loading freeze from normal background work cover the next diagnostic steps.

If stock content also stops at the same position, confirm that updates completed, rebuild the rolling cache and then verify or repair the installation. If the main menu loads normally but the simulator stalls after you press Fly, use the separate fixes for MSFS failing to load into a flight; aircraft, airport, scenery and flight-plan conflicts are then more likely than a startup problem.

Should I reinstall Microsoft Flight Simulator?

Reinstallation should be the last step because it will not fix a troublesome Community package, inadequate SSD space, antivirus scanning or a network delay. Consider it only when loading remains slow with third-party content removed, caches rebuilt, sufficient free space available, an offline test completed and platform repair unsuccessful.

Before reinstalling, back up personal Community content and record the package installation location. Otherwise, the installer may create a second package library or overwrite files you intended to preserve, while deleting official packages can force a very large download.