Check if you have write permission on /tmp.
open a terminal and type:
sudo -s
cd /tmp
mkdir test
ls
after "sudo -s" the system wants your admin password
if the folder "test" was created, you can stop here.
my solution won't help you.
If the folder couldn't be created you can try the following:
Verify and repair permissions
OS X El Capitan (10.11.x) has tools to verify and repair folder permissions.
to verify use this command in terminal:
sudo /usr/libexec/repair_packages --verify --standard-pkgs /
if there are invalid permissions, you find them listed in the terminal.
with this command you can try to fix them:
sudo /usr/libexec/repair_packages --repair --standard-pkgs --volume /
on my system, the tool wasn't able to fix the invalid permissions on /tmp.
i got an error. OS X denied changes on /tmp.
recreate /tmp folder
on my system, i wasn't able to fix the /tmp folder on the running system.
so i tried to boot another system, get access on the internal hard drive and let the "second" system change the faulty folder
i used a OS X system on an external USB HDD.
but the OS X recovery should also be sufficient.
to boot up OS X recovery restart your mac and press and hold "cmd+r"
(
https://support.apple.com/en-us/HT201314)
on OS X recovery open up a terminal
and then again some commands:
sudo -s
cd /Volumes/Macintosh\ HD/private/
mv tmp tmp.old
mkdir tmp
chown root:wheel /tmp
chmod -R 777 /tmp
chmod 1777 /tmp
please note:
cd /Volumes/Macintosh\ HD/private/
=> change the directory to
YOUR system drive! that can be named different!
type
cd /Volumes/ and then press the tab-button twice to list all Volumes; choose the right one!
after recreating the /tmp folder, reboot your mac and try to start Parallels
finally for my protection:
please remember, i don't give any warranty on this instructions.
everything you do is on your own risk!