How to Fix: Windows Install Error 1721

 

problem: Windows Install Error 1721 is usually caused by misconfigured system files that create registry errors within your operating system. Windows errors can cause program lock-ups, slow PC performance, system crashes, computer freezing and more.

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Cause: Registry errors generally occur when new programs are installed over old ones without the old programs being completely uninstalled. This can cause registry pile-ups and error messages. Another potential cause of these error messages can come from malicious software such as adware, spyware, and viruses.

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SolutionS: Scan and repair any missing or damaged Windows registry files using RegCure Pro. After the registry issues are resolved, it is recommended to optimize your PC by removing any spyware, adware and viruses with SpyHunter.

STEP 1: Automatically Fix Windows Install Error 1721 with RegCure Pro

STEP 2: Optimize your PC with SpyHunter.

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Solution One: Automatically Fix Windows Install Error 1721 errors with RegCure Pro


1) Download and install RegCure Pro to fix Windows Install Error 1721 errors.
Windows Install Error 1721
2) Install program and click Scan button.
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3) Click the Fix Errors button when scan is completed.
4) Restart your computer normally to have a check.

 

Solution Two: Run a full system scan with SpyHunter Automatically


Spyhunter is one of the most powerful spyware removal tools on the market. Spyhunter can help you detect and delete various kinds of malware, spyware, viruses and adware from your computer. Follow the removal steps below to automatically remove malicious files.


Step 1: Download removal tool SpyHunter by clicking on the below button.
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Step 2: Following the installation wizard to install it on your PC. After the installation, launch SpyHunter and click ‘Malware Scan’ to perform a full and quick system scan on your PC.
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Step 3: As soon as finishing the system scan, choose Select all and then click Remove to get rid of all the threats on your PC
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Posted by: Anthony B.
Last updated:
Windows Install Error 1721
Operating Systems Supported
  • Windows 8
  • Windows 7
  • Windows Vista (SP-2)
  • Windows XP (SP-3)
Minimum System Requirements
  • 50 MB of free hard drive space
  • Internet Explorer 6 and above
  • Administrative access rights
Windows Install Error 1721