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Resolve unexpected errors when opening Point of Sale

When processing a transaction or opening POS you receive one of the following errors:

Unexpected error happened. Please restart Point of Sale. The error is:
  • Unexpected error happened, please restart Point of Sale. Exception from HRESULT: 0x88980406
  • Unexpected error happened. The error is: Value cannot be null. Parameter: s
  • Unable to open the program through the Point of Sale icon
  • Error: Exception has been thrown by the target of an invocation
  • Configuration system failed to initialize
  • Error 100 database server not found "08w01"
  • Error: 176120 invalid license key status, key denied
  • Error: QBPOSShell has stopped working
Why this is happening

The following errors may be caused by:

  • System does not meet minimum system requirements
  • Point of Sale Database Manager may not be running
  • The computer may be low on system resources
  • Microsoft.NET framework is damaged or might not be properly installed
How to fix it

Intuit recommends 4 solutions for this problem. The first solution may solve your problem, or you may need to try them all. For best results, perform the solutions in the order shown.

Before starting the solutions provided,ensure to take note of the following:
  1. Ensure your computer meets minimum system requirements to run Point of Sale.  Also, close and reopen Point of Sale and try again.
  2. Ensure to run the QBPOS Database Manager vXX, from Start window button search field, enter services.msc, click Ok. From the Services window, right click QBPOS Database Manager vXX and select Start. If Start is unavailable, select Restart. (XX should be the highest number version you see)
  3. Restart your computer.


KB ID# SLN61815
4/26/2017 8:49:35 AM
QYPPRDQBKSWS09 9138 Pro 2017 fdd97e