Question
How can I fix a Windows Installer error 1720?
Asked by: USER2853
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Answer (45)
Several solutions can help resolve error 1720: 1) Repair the Windows Installer service. 2) Re-download the installer file from the official source. 3) Run the installer as an administrator. 4) Check for and disable any conflicting antivirus software temporarily. 5) Try running the installer in compatibility mode.