Anyone got an official solution from sonicwall on this issue? 99% of the time with global vpn installed, this will fix the windows networking slowness, but today i had to remove vpn to get the user back to working. speedtest before was about .1mb after removal was 100mb
powershell Disable-NetAdapterRsc -Name Wi-Fi
that command at the end is what always fixes it for me
It’s on Sonciwalls’ KB
The powershell script / using SSLVPN instead of GVC is usually the best bet.
We sell Lenovo and I do this with typically all the laptops we sell; Verify Rsc is disabled for ipv4 and ipv6, on your network adapters, use power shell…
Way too many people are hanging their hat on RSC being the problem with GVC, but it is not always the case.
A while back I reached out to Sonicwall about this, and after disabling RSC, they provided me with GVC v5 to install and things were fine.
After a recent rebuild to a clean Windows 11 install, I decided to pull the latest GVC and the problem was back. I also recently reconfigured my network so that I’m using ethernet instead of wifi, and my adapter doesn’t even support RSC.
I uninstalled the ‘latest’ GVC and pulled out the “V5” client they gave me last year, and wouldn’t ya know it, my bandwidth is back. I got curious and started looking at the files and noticed it contains some ancient files that are identified in multiple CVEs.
I agree with ditching Global client and using NetExtender instead.
Hey, would you be able to share the v5 client? I am running into the same issue with one laptop, we’ve disabled the RSC but still getting the same symptoms while connected to GVC VPN on latest client - ~5Mbps downloads, 60+ uploads. I am completely clueless, will look at reinstalling drivers and replacing wifi chip this Friday…
The only real benefits we’ve seen from using NetExtender over GVPN are that in some guest/restricted networks, the SSL VPN still works while the GVPN does not, and the SSL VPN supports the TOTP MFA options - but overall, we’ve found the GVPN be more stable and consistent.
I know I’m seriously late seeing this, let me know if you still want that v5 client - but given the age of the libraries they used in it, I’m not sure it’s a good idea to use.
I’ve had our people move over to the SSL VPN and it’s been pretty solid for us.