I thought a week ago that you had a different license. You got a new one from your IT person. Your old license was probably bound to the NIC of the wired adapter.
Just to make sure:
1 week ago i started having issues with MC. Today i got a new license - it didn't help, but got worse, so as you suggested I changed back to my old license, and that is the license I'm currently on.
AND the issues is the same on the old and new licens. There is no difference what so ever on the two. I guess it must be something with the connection at school - as you also mentioned.
Richard Jackson wrote:
If your old license was bound to the wireless adapter MC would not have run when you disabled it. I am sure of that.
Yes, thats true. But I think he tried disabling the WiFi just with th new lic.?
In the original post: "I thought it might be my wireless internet card on my pc, that was the problem - so i deactivated it when working at home - and then it worked fine!".
With the old license MC would run fine if the WiFi was disabled. So MC cannot be locked to the wireless adapter with the old license.
Well it did last week, i know it sounds wierd - but the only way i got MC to run last week was to disable wireless NIC. But when i did it today it wouldn't run - as you are also saying now. I don't know why there should be a difference in how it worked last thursday and today, but somehow there is. ?
I hate to have to suggest this, but what is the creation date of the two license files? Is it possible you overwrote the older one?
Well, when I changed licens, i reinstalled MC15 completely, and just entered the license i wished to use.
I guess its overwrote it. I only have one license file currently.
OK, so you can't switch back. What did you do before when you told us you changed back to the old license file?
You have to distinguish between the product code (the charcter/number combi you get from your IT manager) and the license file, which is generated at installation online. Its a good idea to save that file!
With a student license the product code should be valid for 1 installation only, so to create a new license file you would need to get a new product code. With MC14 we had sometimes the strange effect that the license server would allow installaton with the same product code for two different people but would refuse sending one person a license when he used a second product key - that way he was forced to create a second PTC user account to be able to install mathcad on a second machine (with a new product code) - inverted world. The student licenses where bound to the volume id of the harddisk at those times - sometimes even worse than binding to the NIC. PTC used the term CPU-ID for both the MAC and the VOL-ID - took me a long time to realize what they really meant.
OK, I was not aware of that..
I reinstalled MC15, and entered the old key.
BUT - this old license work just as "well/bad" as the brand new license i got from the IT-manager today.
Should i get a third lincense from my IT guy tomorrow?
To go back to the old license you need the old file, not just the old key.
I was hoping that with the old key you could start MC with the WiFi disabled (because it's locked to the wired adapter), and then restart the WiFi. Based on your other post where you simply disconnected and then reconnected it doesn't sound like that will work though.
I can work in mathcad now, i just have to diconnect from WiFi, then run MC, connect to WiFi again (if I wish to have internet connection while working) and then for gods sake keep my fingers of the ctrl. + c funktion!! At my exam i'm not allowed to use WiFi anyway - but still, it's anoying when working in groups with other students, chatting online over solutions, having to diconnect and connect every time i need to ctrl + c!
Well, you will just have to live without the internet or the clipboard. Think of it as a history lesson. Back in the DOS versions of Mathcad, that's what it was like
haha.. Well, I might just degrade back to MC14 then At least i could still copy + paste there. Thank you for all the help and advises
I am surprised that you were allowed to use the same product key twice and got a license file.
Maybe the license server is not just deleting used keys from its datbase but remembers which MAC the license was bound to and if you request a license forthe same MAC it will send the file.
On the other hand as you wrote you were able to disable the WiFi an dMC still works ..
Anyway, if your IT manager is a generous person I would go for a third license just to be on the safe side.
I'll ask him for sure.
But really I don't think the new (or the old) license is the problem. My guess is that a recent Windows Update, virus or something like that blew it all to pieces, since all of the students in my school have the same problem.
But really I don't think the new (or the old) license is the problem.
I doubt it, too. But I googled for delay and ctrl-c and hanging system and only found rather old statements - nothing new. And it would not be realistic that a virus or update just affects Matghcad and nothing else-
So both licenses are bound to you WiFi. That makes sense as MC woud not decide on the promary adapter at random.
I have no clue why there seems to be network activity at MC startup but of course one may think of a M$ update or a virus?
Creating a new license file bound to the cabled NIC would at least be worth a try. If connecting disconnecting from the WiFi the again makes/cures the problem it can't be a license issue. I guess.
Okay, new development.
If disconnected internet (just disconnected from my connection) = PERFECT start of mathcad, no freeze, no problems. But if i connect to internet after the startup (while MC is running) it starts freezing, very strange!?
If deactivated NIC = Nothing works!
If connected to internet = startup after 5+ min. freezing if ctrl. + c.
I guess i just have to work with no internet connection when working at home! DAMMIT!
Checked firewall - can't find anywhere, that mathcad has been stopped, and MC is allowed all over!