Gcapi.dll What Is

Use Windows Defender or a reputable third-party antivirus to scan your system. If a malicious gcapi.dll is found in non-standard locations, quarantine and remove it. Then reinstall GOG Galaxy as above.

Here is the full story and detailed explanation of . gcapi.dll what is

This usually happens because an antivirus program (like Windows Defender or McAfee) mistakenly identified the file as a "Potentially Unwanted Program" (PUP) or a false positive threat and deleted it. Since the file is removed, the GFI software can no longer run, generating the error. Use Windows Defender or a reputable third-party antivirus