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I am new to using iperf but others in my company use it but today it is acting strangely.

From the server:
iperf3 -s
which results in cmd showing:
Server listening on 5201.

From the client:
iperf3 --format k --length 1 -t 10 -b 1K -i 1 -c *myservername*
which results in cmd showing on the client side:
Connecting to host *myservername*, port 5201
iperft3: error - unable to create a new stream: Permission denied
And cmd showing on the server side:
Accepted connection from *myip*, port 20756
iperft3: error - unable to create a new stream: Permission denied

I can't find any documentation on this so I'm even sure where to start. Can anyone point me in the right direction or anything I can test?

tmwoods
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2 Answers2

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I'll leave the question here in case someone else runs into this problem.

Run as administrator on both ends. Easy peasy.

tmwoods
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1

I have the same problem, using iperf from a network drive, and whereas i was running from a cmd as adminstrator i got the same error. It seems that iperf need write permission on the share too. moving program on C: run perfectly.

user414449
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