This “Someone is currently logged into the APC Management Web Server. Please try again later” error happen if someone just close the browser instead of logging off. In this case APC web server think that the session is still running and they do not allow other session to be created existing session closed first. There are several ways to fix this problem:
1. Add logout.html after the URL
I read this from https://community.spiceworks.com/how_to/42177-someone-is-currently-logged-into-the-apc-management-web-server-error
If you are usually access from http://x.x.x.x then modified to http://x.x.x.x/logout.htm this will work fine as long as your computer IP address are the same with the last successful login computer. If this doesn’t work because you have different IP address then you have to find the last successful login IP address as described in this post and video.
2. Telnet the device and logoff
From http://forums.apc.com/thread/3263 you can use telnet program such as PuTTY or terminal to login to device and logout. This work if you have telnet port open (port 23 or 22), if not you have to telnet directly to UPS serial port.
3. Using FTP this is my experience
This is only required if your IP address different from the last successful login user. If the same IP address use no 1 above.
All our client computers are DHCP client means it sometimes got different IP address from the server. If we forgot to logout after using APC web management server then the error Someone is currently logged into the APC Management Web Server will arise and we cannot just add logout.htm at the end of UPS address as in step no 1 because the IP address is different. Below are steps how we can overcome this problem.
This should work if FTP port opened and it does on my UPS.
Open file event.txt
Look for the IP address from last successful logged in.
Now login from computer who have the same IP address but first you have to logout using http://x.x.x.x/logout.htm
After that you should able to login.
If you are still unsure how to do this, I made this video for you.
Summary of above video is:
- Login to APC device FTP
- Open event.txt file
- Find the last successful login IP address
- Change the IP address to be the same as in the event.txt record.
- Logout by adding logout.htm after device’s IP address
- Now you can login again
4. Press reset button on the network management card
If you have physical access to the UPS you can press the reset button of network management card. This card usually located on the rear panel of UPS. This is the most simple solution to error message: Someone is currently logged into the APC Management Web Server. However this method require access to APC UPS physical device. Please see below picture to find the exact location of the button.
About APC management web server:
We use APC management web server to check current UPS status, voltage, battery etc. The most important for us is to configure alert if the room temperatures goes beyond limit. It means something happen with air conditioner that can cause servers down/broken because of overheat.
I configure the setting so that anytime temperature rise above the limit in the server room because of problem with air conditioner, maintenance team and IT team are the ones who got alert and we try to fix before something bad happen with servers and other IT equipment in that room. This is very important feature for us and we glad it worked perfectly. Oh yes by the way our APC UPS model is: SMART RT8000
OK this wrap up my post on Error: “Someone is currently logged into the APC Management Web Server. Please try again later”. Have a good day.