To verify Rainbow Six Siege, use the launcher that manages your installed copy. On Steam, open the game’s Properties and choose Installed Files > Verify integrity of game files. Ubisoft confirms that file verification is also available for Siege in Ubisoft Connect PC, but its current public guidance does not confirm the exact menu labels or click-by-click route.
Verify Rainbow Six Siege files in Steam
- Restart your computer, then open Steam.
- Open Library and locate Tom Clancy’s Rainbow Six Siege.
- Open the game’s Properties: right-click the game in your Library or use the gear icon on its Library page.
- Select Installed Files.
- Choose Verify integrity of game files and let Steam complete the check. It may take several minutes.
Steam says verification checks whether the game’s files are installed correctly on your computer. Its guidance also cautions against running verification while other system-intensive work is underway, such as a virus scan or drive defragmentation, and against verifying multiple games at once. Steam Support’s file verification instructions.
Verify files in Ubisoft Connect PC
Ubisoft lists Ubisoft Connect PC as a launcher where Rainbow Six Siege files can be verified. Open the game in Ubisoft Connect and use its current file-verification control. Ubisoft’s accessible guidance confirms the feature but does not establish the exact current menu labels or click sequence, so those labels may differ by interface version. Ubisoft Help: verifying game files for Ubisoft Anti-Cheat issues.
Use the launcher that manages your installation. Ubisoft also lists Steam and Epic Games Launcher for Siege verification; a launcher should not be assumed to repair files managed by another storefront.
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What a failed-file message means in Steam
If Steam reports that one or more files failed to verify, that does not automatically mean the installation is broken. Steam says this can be normal for most games because the affected files may be local configuration files that should not be replaced; its guidance says the notice can safely be ignored. If Siege still has a specific launch error or missing content afterward, troubleshoot that symptom rather than treating the warning alone as proof of corruption. Steam Support.
What verification can—and cannot—fix
Ubisoft places file verification among its troubleshooting steps for Ubisoft Anti-Cheat issues. It says missing or corrupted Windows dependency files may lead to crashes or performance problems, making verification a useful initial check. It is not a guarantee that every crash, performance issue, launch failure, or anti-cheat error will be resolved; follow current official troubleshooting for the specific error if the problem continues.
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Ubisoft’s BattlEye FAQ, published on July 27, 2016, contains older Siege-specific advice and verification references. Treat it as historical guidance, not confirmation of today’s launcher interface or universal current policy. Ubisoft’s BattlEye FAQ.
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