Epic Games Launcher Fixes — Downloads, Launch Failures and Error Codes
Stuck downloads, games that verify forever, launcher errors that mean nothing. Here's the diagnostic order that actually resolves them.
The short answer
Most Epic Games Launcher problems fall into three groups: download failures caused by the cache directory or throttling settings, launch failures caused by missing runtime dependencies such as DirectX and Visual C++ redistributables, and sign-in errors caused by cached web data. Clearing the launcher's webcache folder resolves a surprising proportion of both sign-in and interface problems and should be the first step.
Verified and last updated August 12, 2026.
- Time needed
- 20 min
- Difficulty
- Beginner
- Read time
- 4 min
Epic's launcher fails in a small number of characteristic ways, and the useful thing is that they are distinguishable. A stuck download is a different problem from a game that will not start, which is a different problem from a sign-in loop.
Start here regardless of symptom
Delete the webcache folder. The launcher embeds a browser for the store and sign-in, and its cache going stale causes an outsized share of all reported problems. It costs nothing — no games, settings or saves are affected.
Step 1: Clear the webcache
Fully close the launcher 1 min
Including the system tray icon, and check Task Manager for a lingering process. A running launcher will simply recreate the folder.
Delete the webcache folders 2 min
Navigate to %localappdata%\EpicGamesLauncher\Saved and delete the webcache folder, plus any webcache_ folders with version numbers appended.
Restart and sign in 2 min
The folder rebuilds automatically. You may need to sign in again, which is expected.
This fixes sign-in loops, blank store pages, library items that will not load and a range of interface faults that look like they should have nothing to do with a browser cache.
Step 2: Slow or stuck downloads
The throttle setting catches people out repeatedly. It sits in Settings under downloads, and if you enabled it once during a large download it stays enabled forever.
Step 3: Games that will not launch
The install succeeds, you press Launch, and nothing happens — often with no error message at all.
This is nearly always a missing runtime dependency. Games install prerequisites like DirectX and Visual C++ redistributables alongside themselves, and when that step fails silently the game cannot start.
Verify the installation 10 min
Library → three dots on the game → Manage → Verify. This re-runs the prerequisite installers, which is why verification fixes launch failures that appear to have nothing to do with file integrity.
Install the redistributables manually 10 min
Look in the game's install folder for a _CommonRedist directory and run the installers inside it directly. This catches cases where the automatic step is failing repeatedly.
Run as administrator once 2 min
Some games need elevated permissions to write to their own directory on first launch. Once is enough — if it works elevated and fails otherwise, the install directory has a permissions problem.
Step 4: Endless verification loops
A game that verifies, finds errors, redownloads, and verifies again forever.
The cause is almost always antivirus interference or file permissions. Real-time scanning interrupts the sustained write pattern verification produces, so files are written incompletely and fail the next check.
Add the Epic install directory to your antivirus exclusions. On a machine used for gaming this is worth doing preventatively for every game launcher, not just Epic.
If exclusions do not fix it, the install location itself may have permissions problems — a drive that was moved between machines, or a folder inheriting restrictive permissions. Installing to a fresh directory tests this in one step.
What works
What doesn't
Key takeaways
Frequently asked questions
Why are my Epic downloads so slow?
Check the throttling setting first — Settings has a download throttle that can be enabled without you realising, particularly if you set it once during a large download and forgot. Beyond that, Epic does not offer regional server selection the way some platforms do, so a slow download at peak times may simply be server load. Pausing and resuming the download sometimes reconnects you to a better route.
What does clearing the webcache do?
The launcher embeds a browser for the store, library and sign-in pages, and that browser keeps its own cache. When it becomes corrupt you get sign-in loops, blank store pages and interface elements that will not load. Deleting the webcache folder forces it to rebuild and costs you nothing — no games, settings or saves are affected. It is the single highest-value first step.
Why does a game install fine but not start?
Almost always a missing runtime dependency. Games ship with prerequisites like DirectX and Visual C++ redistributables that install alongside them, and if that step failed silently the game will not start and often gives no error at all. Verifying the installation through the launcher re-runs those prerequisites, which is why verification fixes launch failures that look unrelated to file integrity.
Should I reinstall the launcher?
Rarely necessary and it is a large time cost, because it can require redownloading games depending on how you do it. Before reinstalling, try clearing the webcache, verifying the game and checking runtime dependencies. If you do reinstall, note your existing game install directory first so you can point the fresh launcher at it rather than downloading everything again.
Is antivirus really a common cause?
Yes, more than people expect. Real-time scanning interferes with the large sustained file writes that game installation and verification produce, and the symptom is a verification that never completes or a download that stalls at a consistent percentage. Adding the Epic install directory to your antivirus exclusions resolves it, and is worth doing preventatively on a machine used for gaming.
About the author
PC Hardware & Performance Editor
Marcus has been building, breaking and repairing gaming PCs since 2011, first as a weekend favour for friends and then for eight years as a bench technician at an independent repair shop in Portland, where roughly a third of the job was diagnosing machines that "ran fine yesterday".
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