Frequently Asked Questions - FAQ
This collection of frequently asked questions (FAQ) provides brief answers to many common questions about Spider Financial and the NumXL Add-in. It also provides links to more detailed information available from this web site. Please check here for answers before posting a question to one of the forums or before sending email to the support e-mail addresses.
Modeling
SDK
Support
Sales
- W-9 Form
- VAT or DUNS Number
- NDAA (Section 889) Compliance?
- Applying VAT to your order
- I am tax exempt. How can I avoid paying sales tax or VAT?
- My company/organization would like several licenses, do you offer site licenses?
Resellers
- What are resellers financially responsible for?
- Reseller Process
- Does Spider Financial have a reseller program?
- Where is the product shipped out from?
- What payment methods do you accept?
- What kind of media does this have? CD-ROM /USB /Download?
Online Store
Functions
- How to identify the Nyquist frequency with DFT
- How do I know when cointegration exists in my results?
- EWMA (Exponential Weighted Volatility) FAQ
- How do I interpret the calculated EWMA values?
- Largest data set for DFT and IDFT?
- Q: GARCH_CHECK returns true even when the sum of alpha and beta equals to one?
Microsoft Excel
- Excel is not re-calculating when I hit F9 key!
- Do I need a Microsoft Excel license to run NumXL?
- How can I pass an array formula as an argument to NumXL?
- Where do I find Excel Add-ins Manager?
- NumXL with non-English Excel
- Excel installation is outdated?
Licensing
- NumXL functionality in the 14-day trail
- I bought a perpetual license last year, but do I have to renew my Premier Support?
- Activation error for my 5th machine
- Where do I find NumXL License Manager?
- I forgot my license key
- Deactivating/unlocking license key
Installation
- How do I uninstall NumXL under Windows 10?
- I received an error stating "Windows Installation is Outdated".
- I can't upgrade to 1.65 (error during locality initialization)
- Where can I download free trial of NumXL?
- Can I use NumXL on my Mac?
- Install NumXL on CITRIX Server
Beta Testing
General
- What is the largest data set NumXL can support?
- NumXL Function List
- Where can I write a customer's review?
- How can I submit feedback or file a defect or claim?
- What do I need to know to use NumXL?
- How often does Spider Financial release new versions of NumXL?