Knowledgebase

Due to maintenance there may be occasional timeouts.

Please try to pay again later or use alternative payment methods such as PayPal or on account (wire transfer).

In case of persistent problems with your credit card payment, please contact your bank.

For V8 you need a new license key, you will receive this key after logging in to our customer area.

The easiest way to install the update is to use the integrated update function: Click the "Check for Updates" button in the "Help" ribbon bar.

Although we always had to pay high fees for cashing checks to our bank, we still accepted them as a gesture of goodwill for invoice amounts greater than 100USD. However, our bank is not accepting checks anymore since March 2020, so we had to stop offering this payment method completely.

You may process your payments by wire transfer, credit card or PayPal instead.

No. On October 21, 2026, the PHP project disclosed two critical security vulnerabilities (CVE-2026-109618 and CVE-2026-109619, also known as "PHP2Shell") that could potentially allow attackers to execute malicious code on web servers.

We updated all affected systems immediately after the security updates were released. In addition, we conducted a targeted review of our systems for possible signs of attack. This review found no indication of unauthorized access or compromise.

Independently of this incident, we always keep our systems up to date and review them regularly so that we can respond quickly to new threats.

Our products, such as TreeSize, SpaceObServer (Web Access), UltraSearch, ShellBrowser and SEPA-Transfer, are not affected.

With per-user licensing, the license is assigned to a specific person.
That user may install and use the software on up to three of their own computers. Typical examples are TreeSize and UltraSearch.

With per-instance licensing, a specific installation of the software (for example on a server) is licensed.
If multiple users access that installation, the required number of user or client licenses must also be available. A typical example is SpaceObServer Enterprise.

In short:

• Per user: The license is tied to a person (e.g., TreeSize, UltraSearch).

• Per instance: The license is tied to an installation (e.g., SpaceObServer Enterprise).

The subscription ensures seamless access to the latest software versions.

• Annual Billing: Licenses are valid for one year, starting from the purchase date.
• Payment Options: Pay via credit card, PayPal, or invoice (30-day Grace Period for invoices).
• Renewal Notifications: We will remind you at least
  30 days before an upcoming renewal of your subscription.
• Cancellation: Cancel anytime up to seven days before renewal.
• Perpetual Licenses: Existing licenses remain valid, but a subscription is needed for updates after Maintenance ends.

With Automatic Renewal, you will never miss the renewal of the maintenance period of perpetual licenses again!

You first pay the full price for the license.
In the following years, you will pay the renewal price of 50% of the then current price.

When selecting Automatic Renewal, you will have to enter either your credit card details or your PayPal account.
After your current maintenance, you will automatically be charged with the amount for the renewal and your maintenance will continue without you having to lift a finger.

To upgrade, please contact our customer support directly and before purchasing an additional license. That way we can credit the Personal License and send you a quote for the difference in price. If you buy the Professional without contacting us, we cannot provide a refund (for business customers).

Please use the European Commission portal at https://ec.europa.eu/taxation_customs/vies/?locale=en to check your valid inner-European VAT ID number.

VAT IDs from the UK can be checked at https://www.gov.uk/check-uk-vat-number.

You can be registered as a reseller and place orders by credit card, PayPal or on account with payment terms of NET30.

Currently, we do not offer a reseller discount.