• About
  • Contact
  • Privacy Policy
SecurityCamCenter.com
  • Home
  • Buying Guide
  • Learning & Tips
  • Technical Guides
  • Security Tips
  • Downloads
  • CCTV Glossary
No Result
View All Result
SecurityCamCenter.com
No Result
View All Result
Home Technical Hikvision

How to fix Reconnecting.Error Code HCNetSDK.dll[91]

Marco Albertini by Marco Albertini
in Hikvision

The Hikvision Reconnecting.Error Code HCNetSDK.dll[91] occurs on the iVMS-4200 software and it’s an indication that there’s not enough power juice for the camera or that the Auto-change stream type is enabled.

The fastest solution to solve this issue is to use a better PoE switch and turn the auto-change stream type off. In this guide, you can find steps on how to fix this reconnecting error code issue.
Hikvision Error Code 91

How to fix Hikvision reconnecting error code 91

1. Not enough power

This is most likely the main cause of this issue. The camera is not getting enough power juice, it’s struggling and it’s going on and off.

When using a PoE switch to power up the camera, you need to make sure that the switch is certified to be used with PoE cameras and that it follows international standards. So, just make sure you’re using the correct PoE switch.

2. Turn off the auto change stream

The Hikvision IP camera or recorder (DVR NVR) uses two types of video stream: main stream and sub-stream.

These types of streams depend on the resolution, frame rate, and compression type (H.264, H.264+ or H.265) and when the camera auto changes the stream it can cause the picture not to show up.

To fix the Reconnecting.Error Code HCNetSDK.dll[91] error code, open up the iVMS-4200 software, go to Tool, and then System Configuration. Access the Image section and untick Auto-change Stream Type (check the picture below).
Hikvision Error Code 91This should do the job and you should be able to see your cameras on iVMS-4200 software. If not, to reboot the software, or even your computer.

Marco Albertini

Marco Albertini

Italian-born Marco Albertini, with a background in Computer Science, found his passion in security camera systems, alarms, and cloud services. Based in New York since 2010, he's a sought-after expert, assisting numerous businesses and homeowners in securing their properties with advanced solutions.

Related Posts

Hikvison How-To

How to Set Up Hikvision Smart Hybrid Light Cameras

Hikvison How-To

How to Configure Motion Detection via iVMS-4200 Software

Hikvison How-To

How To Connect Hikvision DVR To Phone (Hik Connect Phone Setup)

Hikvison How-To

How to Fix Recording Exception Error on Hikvision

Hikvison How-To

How to Add and Delete profiles on your Hikvision Security System

Hikvison How-To

Playback Error on Hikvision System: Number of streaming channels exceeded limit (Quick Fix).

Load More

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Latest articles

Smoke Detectors

Smoke Detector Beeps Twice and Stops – How to Fix It (2025)

Hikvision

How to Set Up Hikvision Smart Hybrid Light Cameras

Hikvision

How to Configure Motion Detection via iVMS-4200 Software

Thermostats

How To Fix Nest Thermostat Error E195

Streaming

Kodi Error One Or More Items Failed To Play (Quick Fix)

SecurityCamCenter is a participant in the Amazon Services LLC Associates Program. This post may contain affiliate link(s). An affiliate link means we may earn advertising or referral fees if you make a purchase through our links, at no extra cost to you.

Categories

© 2024 SecurityCamCenter.com / Security Tips and Tutorials

No Result
View All Result
  • Home
  • Buying Guide
  • Technical

© 2024 SecurityCamCenter.com / Security Tips and Lessons