Why is my Call of Duty Steam update stuck at 99%?

It is usually a Steam download, patching or file-verification stall rather than a confirmed Warzone server outage. Treat it as a local Steam install issue first.

Should I reinstall Call of Duty if the update is stuck?

Not first. Restart Steam, clear the download cache, try another download region and verify the game files before deleting the whole install.

Will verifying files restart the download?

It can trigger extra downloading if Steam finds missing or changed files, so use it after the lower-risk steps.

Call of Duty Steam Update Stuck at 99%: Fixes for Warzone and CoD

Call of Duty Steam update stuck at 99%? Try these fixes first

By TourneyTime · 13 July 2026

The short version

If your Call of Duty update is stuck at 99% on Steam, do not reinstall the whole game straight away. Recent Steam Community reports show the usual fix order is: fully restart Steam, clear Steam’s download cache, change download region, then verify the game files if it still will not move.

Activision’s own PC troubleshooting guidance also points players towards file verification, current Windows updates, shader preloading, and closing conflicting software such as NZXT CAM, MSI Afterburner and Razer Cortex.

Fix order: try these before reinstalling

Step	What to do	Why it helps
1	Pause the update, fully exit Steam, then check Task Manager to make sure Steam is closed	Clears a stuck Steam process without touching your install
2	Reopen Steam and resume the Call of Duty update	The simplest fix reported in Steam Community threads
3	Clear Steam’s download cache under Settings → Downloads	Steam’s cache can stall near the end of a large patch
4	Change your Steam download region	A different download server can clear a regional CDN issue
5	Verify integrity of game files from the Call of Duty Steam properties menu	Activision’s PC guidance recommends file verification when the install may be damaged
6	Restart the PC and try the update again	Removes background locks on large game files

Use file verification after the lighter steps. Steam may need to redownload files if it finds a mismatch, so it can take longer than a simple restart.

Check whether it is actually a wider CoD issue

Before you spend an hour reinstalling, check Activision’s online services page. If Call of Duty: Warzone and your platform are listed as online, the 99% problem is more likely to be a local Steam or PC install issue than a game-wide outage.

If the game launches but crashes after the update, switch tracks: let shader preloading finish at the main menu, update Windows and GPU drivers, then close overlay or tuning tools. Activision specifically names NZXT CAM, MSI Afterburner and Razer Cortex as software that can conflict with Warzone on PC.

When to reinstall

Only reinstall if every lower-risk step fails: Steam restart, cache clear, download-region change, file verification, Windows/GPU updates and a clean reboot. Call of Duty installs are huge, so a full reinstall should be the last resort, not step one.

Sources we check

We checked the active Steam Community reports for Call of Duty updates sticking at 99%, Activision’s Warzone PC troubleshooting page, Activision’s online services status page, and the fresh Reddit thread that surfaced the issue in the Warzone community. This is a practical troubleshooting guide, not confirmation of a single official bug.

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