My suggestion would be to only do that if downloading is not working. I must say I have downloaded PD 6-7-8 & now 9 without ever turning off my firewall or virus.

I to would be wary about disabling my firewall and anti-virus software. My youtube channel====> http://www.youtube.com/user/relate2?feature=mhsn

It's not necessary with Windows 7. All versions and updates to PD8 and now PD9 work quite well using standard windows settings. There is no need to lower your defences at any time. Win 10, i7

Hi,
I select the save button when downloading, and then run install as 'Adminisrtor' access with all firewalls disabled, then turn back on when install finishes to register the program, also this prevents any anti virus spyware from blocking some dll files being installed.
Jim Intel i7-2600@3.4Gz Geforce 560ti-1GB Graphic accelerator, windows 7 Premium 12GB memory

Visit GranPapa64's channel for your YouTube experience of the day!

I have not had to do any of the procedures that you mentioned. In Windows 7 it's not an issue. PD9 downloads and load without a hitch. Win 10, i7

I'll keep the firewall and AV enabled and just go ahead with the download. Granted, there may be some potential but unlikely chance of a conflict created by those programs but a much higher risk of inviting trouble with them disabled. Redwing Roger

Windows 7 64 bit Home Premium, Intel Core i7-860 2.8GHz processor, 8Gb DDR3 SDRAM, nVidia GeForce GTS240 1024MB graphics card, 2nd internal HD - WD Black Caviar 2TB. PD 9 Ultra, Build 9.00.2330

I had no trouble downloading the patch, but on my Windows XP Pro SP3 system, I wasn't able to install the latest patch until I disabled my anti-virus. There was a certain DLL (can't remember name now) that was causing a problem, and the installation was aborted. After disabling Norton 360 anti-virus, the installation succeeded.

Guess that is why Cyberlink warned us..Good info Xerox.

Norton is notorious : while many others are not. I use AVG. No problem with downloads. CL is issuing the warning 'cause they want you to download properly. Also as many others have said no issues with Windows 7. Run as administrator downloads happen like a breeze. PC specs :
OS Windows 10.0 Pro
MB - AS rock Z77 extreme 11
Intel 3770K @ 4.0 Ghz OC
Gskill 32 GB RAM 1800 Mhz
6 TB HDD, SSD bootable
nVidia ASUS GTX 660 Ti
BenQ 22" LCD monitor 1920x1080

Xerox wrote:

"I wasn't able to install the latest patch until I disabled my anti-virus. There was a certain DLL (can't remember name now) that was causing a problem, and the installation was aborted. After disabling Norton 360 anti-virus, the installation succeeded. "

forwardcdkey.dll- I think the message was.
Confirm yours, I'm on Win7, had to shut down Norton.


(Why don't I ever get the "quote" to function??)
Just something.
https://www.petitpoisvideo.com

That was the file, forwardcdkey.dll. Thanks 1Nina. Gateway DX4380, AMD A8-5500 Quad Core 3.2GHz with ATI Radeon HD 7560D; 16GB RAM; 1 TB SATA 7200 RPM; Windows 8 Pro 64-bit; PDR11, PDVD12.