If Overwatch 2 won't launch, the first two steps in Blizzard's own article are to update your graphics driver and Windows, then run Reset In-Game Options in the Battle.net desktop app. The article names no single cause and simply gives six steps in a fixed order, so working through them in that order is the place to start. This guide follows Blizzard's support documents as checked on September 30, 2026, for Windows PC only, and it covers games that never start, not games that crash mid-session (for that, see what to do when a game crashes while recording). Blizzard now titles the article "Overwatch Doesn't Launch" and calls the game simply Overwatch, which is the game most people search for as Overwatch 2.
Symptoms, likely causes and the official fix
| Symptom | Cause named in Blizzard's docs | What to do |
|---|---|---|
| Battle.net shows "Game is Running" but Overwatch does not appear | No single cause is named; Blizzard gives a six-step order instead | Work through the steps from step 1 (drivers and Windows). Step 4 includes ending the Agent, Battle.net and game processes in Task Manager |
| No Overwatch window appears after clicking Play | Not named per symptom; step 2 mentions settings that do not match your graphics card or monitor, and step 3 mentions security software mistaking the login module for a threat | Run Reset In-Game Options, then update your security software or add Battle.net to its exceptions list |
| Launching from Steam opens a Battle.net account screen or shows "Prerequisite data was missing from session." | The Steam and Battle.net accounts are not linked yet | Click Open Browser and follow the prompts to link your Battle.net account. If linking keeps failing, check that only one account per platform is linked and that the platform account is not already tied to another Battle.net account |
| An error code such as BLZ0000ABC123 appears | Each error code has its own official article or notice | Search Blizzard's support site for that exact code first. If it does not solve it, continue with the repair tool, driver and Windows updates, then a reinstall |
| The PC restarts or shuts down by itself during play | Not caused by a Blizzard product, so outside Blizzard's support scope | Check for overheating and update drivers and Windows. If it keeps happening, contact the PC maker or a local technician |
The short version: two symptoms, no single named cause
Blizzard describes two symptoms: the Battle.net desktop app shows "Game is Running" but Overwatch never opens, or no game window appears after you click Play. The fix order is the same for both, so avoid changing several things at once and relaunch the game after every step. Resetting in-game options wipes your custom settings, so once the game runs again, set them back up with our Overwatch settings guide.
Six steps to try when Overwatch will not launch
- 1Update your graphics driver and Windows — Press Windows+R, type DxDiag, click OK, and open the Display tab to see your graphics card under Device and your driver version under Driver. Download the latest driver from the maker (AMD, NVIDIA or Intel), install it, finish Windows updates and restart. This follows Blizzard's article "Updating Your Drivers and Operating System" (000031024).
- 2Reset your in-game options — Open the Battle.net desktop app, click the cogwheel next to the Play button, choose Game Settings, find Overwatch, then click Reset In-Game Options, Reset and Done in that order and launch the game again. Blizzard explains that settings which do not match your graphics card or monitor can cause crashes or poor performance (000126203).
- 3Update or temporarily disable security software — Antivirus, firewall and VPN tools can wrongly block a game, so update the security software first. If that does not help, add Battle.net to its exceptions list manually, or disable it temporarily until the maker fixes the problem, using another protection such as Microsoft Defender in the meantime (000385216).
- 4Delete the Battle.net folder — Press Ctrl+Shift+Esc, and on the Processes tab select Agent, Blizzard Battle.net desktop app and any game process, then click End Process. Press Windows+R, enter C:\ProgramData\ and delete the Battle.net folder, then start Battle.net and update the game. If the game tab shows Install instead of Play, click Locate this game or run the game launcher (000034719). The launch article mentions a Tools folder without giving its exact location, so this guide quotes the 000034719 steps as written.
- 5Run the repair tool — In Battle.net, click the game icon, then the cogwheel next to Play, and choose Check for Updates first. If the game is up to date and the problem continues, open the cogwheel again, choose Scan and Repair, click Begin Scan and wait until the repair finishes (000007655).
- 6Close all other applications — Close programs you do not need and restart. If that is not enough, press Ctrl+Shift+Esc, choose More Details, open the Startup tab, right-click items and select Disable, then restart. If the game now starts, enable the items one by one to find the culprit (000023848).
If it still won't start, check these
- Check how you launch the game. Blizzard says Steam or Nexon players should contact that platform's support, and console players should contact the console maker. This guide follows Battle.net (global), so if you launch through Nexon, ask Nexon support first.
- If you launch through Steam, try Steam's own general procedure: right-click the game in Library, choose Properties, open Installed Files and click Verify integrity of game files. It can take a few minutes, a few failed files are normal, and you should not run it during heavy tasks such as a virus scan.
- Confirm that your PC meets the minimum specs, that you run 64-bit Windows 10, and that a phone number is linked to your Battle.net account. Read the exact numbers in Blizzard's Overwatch System Requirements article (000255147).
- Save any error code and message exactly as shown and search for that code in Blizzard's support articles. With no code, write down whether Battle.net shows "Game is Running" or no window appears at all.
- When you contact support, include the graphics card name and driver version from DxDiag plus which steps you tried and what happened. Blizzard's routes are the Technical Support Forums or contact us.
Recording once the game runs again
DOR is a free Windows app that records a game after it has started, so it does not fix launch errors. If the game runs again but a problem still shows up only in certain moments, you can record that moment, talk through what is happening with your microphone, and show the clip to support. Overwatch is a game where DOR records full matches automatically and cuts automatic highlight clips such as kills. If you just installed a fresh NVIDIA graphics driver in step 1, note that on an NVIDIA graphics card DOR uses NVENC hardware encoding by default for its recordings. Once you are back in matches, our Overwatch replay guide covers watching replays.
Official sources and check date
Everything here reflects Blizzard's support pages as checked on September 30, 2026. The article only shows a relative "Updated: 2 months ago" label, so no exact update date is given. Menu names are the English Battle.net app labels. The base article is Overwatch Doesn't Launch, the folder steps are in Deleting Battle.net Files, and Steam's file check is described in Verify Integrity of Game Files.
