This can happen due to an incomplete download or a hard drive malfunction. Corrupted or missing game files: Steam may be unable to verify the integrity of game files if they are corrupted or missing.Here are some common reasons that may cause Steam to be stuck on verifying installation: By identifying the root cause of the issue, you can apply the most appropriate solution to fix the problem. Common Reasons for Steam Stuck on Verifying Installationīefore diving into the troubleshooting steps, it’s essential to understand the common reasons why Steam may be stuck on verifying installation. The article below will provide every solution for this error. As such, users must ensure that their internet connection is stable and working properly before troubleshooting the error message. The main cause of this issue is incomplete or corrupted data in the installation files.