I have been using Cisco AnyConnect through my institution to connect to my work VPN.
However, I have been experiencing problems lately. I can't even start or reinstall Cisco AnyConnect on MacOS 10.3.6 (latest update)
I have tried debugging it on my own. I have made some progress to point out the problem. I will try to summarize it below:
Cisco AnyConnect tries to install files on the
/opt/cisco(whereas on Mac OS the appropriate folder seems to be
/usr/local/opt/...) This is the case in all versions of AnyConnect that I tested (4.5; 4.6 and 4.8). This no longer seems to be allowed in the latest version of macOS 10.13.6, hence failed installation (see points below).
Looking back on my TimeMachine, I had that
/opt/folder in the
rootuntil December 12 (date of the last update of macOS High Sierra). It actually contained only the Cisco files (proof that something unusual is in progress).
Since that macOS update in December, the
/optthe folder at the root no longer exists (just
/usr/local/opt) It is not allowed to create that
/optdirectory either. I tried but with no luck, even with administrator rights, root user profile and disabling & # 39; System Integrity Protection & # 39 ;. This happens using the GUI and the terminal (
sudo mkdir /opt) The error messages are not useful (error 43 in the GUI and message "no such file or directory" exists in the terminal). I can create a new folder in the root, as long as it is not called "opt" (if I try to name it)
optI get error messages).
The last thing, I also tried to create
/usr/local/opt. There is no possibility there either.
If you have any ideas on how to proceed then it would be great! Thank you very much for your help (I tried to contact Cisco support but it seems you need to be the direct physical client to do so …).