> ## Knowledge Base Index
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> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# How long will a slave NVR function if it is disconnected from the CathexisVision site master holidng all the licenses?

|| **Question** 
 
How long will a slave NVR function if it is disconnected from the CathexisVision site master holding all the licenses?

| **Answer**

A slave NVR is marked as absent after 28 days.

This means it will cache the master or site NVR licenses for a 28 day period, and then after that it disconnects the unit/licenses.

If it cannot find the licenses on the master or disconnected server which forms part of the site, then it will become completely unlicensed.

**Browse through our useful tutorial videos and manual resources that can be found using the links below:**

||| https://cathexisvideo.com/support/videos/

||| https://cathexisvideo.com/support/documents/