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Why I never get the update prompt?

Bear in mind to automatically get the update prompt, you need a live internet connection, and also, you need to double check that your firewall, anti-virus software, or anti-spyware software allows Sothink to connect to the internet.

Where can I reset the interface language?

To change the display language, you need to click the Help button at the top right corner of the Sothink Quick Launcher. Currently, Sothink products support English, German, French, Spanish, Japanese, Korean, and Traditional Chinese.

Can I use Sothink products on Windows Vista and XP systems?

Absolutely yes, Sothink products can run on Windows XP/Vista/7/8/8.1/10 (32-bit/64-bit), just make sure you have administrator’s privilege before installing executing Sothink Quick Launcher.

Why do I get the expiration prompt even before I run out of the 30-day trial period?

That’s probably due to the change made to the system date before/after installing Sothink products. Please correct it, and then uninstall and reinstall Sothink products to continue your trial period.

How to replace my old registered E-mail with a new one?

You can login to Sothink Member Center to update your registered E-mail at any time, or you can contact Sothink Service Team to help you update.

Can I register on two computers with a Single-User License?

No, according to our License Agreement, a Single-User License can only activate one copy of Sothink products on only one computer.

Can I change my registered name after purchasing your products?

Of course you can. Please contact our service team via the contact form, they will help you make the change.

I was prompted the "unable to execute file" error message, how do I fix this?

You can try the following methods:

1) Make sure your anti-virus program and internet security settings do not prevent Sothink Quick Launcher from executing;
2) Make sure you are running the Administrator's account if you are using Windows Vista/7/8/8.1/10.
3) It’s better to download Sothink Quick Launcher first, and then perform the installation. Try not to upgrade and install Sothink online directly.

I don’t have a Windows PC, can your products run on Mac OS X?

Sorry, Sothink products currently do not have Mac versions. They are still in the works, and will be coming in the near future. You can subscribe Sothink newsletter, so that when the Mac versions come out, you will be the first to know.

Where to download the latest version of Sothink products?

The latest version of Sothink Quick Launcher is always available for download at

Activate serial number