Question about Garmin Forerunner 305 GPS Receiver

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Garmin 305 not communicating with Training Center

When I plug my 305 into the computer, it opens the window for Training Center, and then a message appears: There was a problem while communicating with your device. Please make sure it is connected to the computer, then try again.

It just started this after 15 months without a problem. I also sometimes get this message: The remote could not be resolved or something to that effect. Thanks.

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  • Anonymous May 12, 2008

    I couldn't get the Garmin 305 to turn on. I got that fixed but now I can't transfer the info to my computer. It says "an error has occured..."

  • bikerpaul May 15, 2008

    I have the Edge 305 whihc has the same error. GPS is new and worked the first three times I uploaded then stopped. It does however upload data to motionbased.com

  • OneBadApple May 16, 2008

    I'm getting the same error message. It worked fine the first 2 times, but when I went to upload my data last night I got the message. I have tried everything I can think, even installing the software on another computer and still have the same issue.

  • richardgario May 17, 2008

    When connecting device to pc nothing happens.

    When I open TC and try to receive from device I get the 'unable to communicate' problem.

    I have not updated software, using Vista and has been working ok for last 3 months.

  • woodgie May 25, 2008

    Mine comes up with a bunch of gibberish and asks you to copy the eroror to a clip board and e-mail it to tech support. Well I did that twice and never heard back anything. I also called twice but the reponse time is very slow - over 15 minutes. When I finally got someone they said they would have to transfer me to someone who handles software issues and it would be another 20 minute wait. Geezzz. Can anybody help? Even when I reinstalled I still got the error. I am using Windows XP. JB

  • ironman bob Jun 10, 2008

    garmin forerunner 305 wont communte with computer at least 30 seconds to turn on the watch device to just start the unit it was 5 months old when i started having promblems can anyone help me please !

  • nick868 Jun 21, 2008

    I get exactly the same problem. It worked fine for the first couple of weeks, and now it says there is an error communicating with the device. I've tried uninstalling and reinstalling the software but no joy.

  • SSminnow Jun 27, 2008

    This same problem started about two weeks ago. I can get my data uploaded to Motionbased and Training Peaks. What is the solution?

  • kim74 Jul 04, 2008

    I got the same problem with the Garmin Edge 305, after having updated the software and the firmware. Before it worked for a couple of weeks but since I did the update nothing works anymore. I uninstalled all drivers, went back to the old firmware... nothing changed. I even tried to install everything on a Mac.... the same stuff.... the wired thing is that after updating the firmware the communication works for one, two times... and then the same story again

  • kim74 Jul 04, 2008

    I have the same problem with my garmin edge 305. Since I updated the
    firmware and the software, I have this communication error. Before it
    worked fine for a while. I uninstalled the drivers and the software
    and after reinstallation the problem was still there. I even installed
    everything on a Mac.... but still the same. After each firmware update
    it works for one, two times and then the error appears again.

  • Anonymous Jul 27, 2008

    same

  • Anonymous Jul 30, 2008

    I've had the same conflict problem. I copied the error message and sent to Garmin Tech support. They were very helpful and have suggested that the problem could be that I have an out-of-date Operating System installed on my unit and an old version of Garmin Training Centre on my PC. I've just recently installed the latest version of the OS for the 305. It's still too early to tell if this has solved the problem.



    I have also from time to time had a complete TC meltdown which resulted in all the maps for my run traces being lost. I've also had some GPS inaccuracy issues, e.g. my unit has recently measured a certified accurate 10km race course at 250m !! longer on an open landscape with no possibility of interference from high buildings or trees. Not happy. Maybe I'm expecting too much from a small hand-held GPS unit?

  • Anonymous Aug 13, 2008

    I could solve this problem when I removed/erased all my programmed routes from my Garmin Edge 305. As soon as I transfer my defined routes from the TrainingsCenter to the device, I get the same communication error again.

  • lmkay Aug 27, 2008

    I have the same problem. I've deleted everything on the watch and it connects for the first time but doesn't transfer data. This is so frustrating. This has worked for a couple years with out this problem... suddenly boom.

  • wood13 Sep 04, 2008

    I'm having the same problem. I ran my best run and I can;t record it in the trainer. Just started happening. any suggestions?

  • twh1761 Nov 07, 2008

    Yeah. It sucks. I have had this problem intermittently since I got the 305. Sometimes I restart the program and that fixes it after a few tries. I like the computer but would not buy it again or recommend it to someone.

  • Anonymous Mar 25, 2009

    Mine GTC dont want to start

  • sampizelo
    sampizelo May 28, 2012

    had this same problem -- tried the easiest fix on the page and took a camera cord with the same ends. Completely fixed the problem.

  • Pieter De Somer Jul 08, 2013

    I have the same error. Any solutions?

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I am new to the Garmin Edge 305, and started getting this problem yesterday. Indeed, yesterday it was the first time that I downloaded Courses.

I followed the Guest solution, deleted all new courses from my Garmin, and it now WORKs!!!!

Uploading my courses back again to the Garmin made the problem return back. I need some more work to identify the bad course.

Posted on Jul 05, 2008

  • Fix Fox
    Fix Fox Dec 28, 2008

    I faced the same problem.

    Here is the detailed answer I received from Garmin support. It worked for me!



    Please put the 305 on to charge. If the screen is blank, press and hold the Mode button and then press the Lap/reset button as well and hold them both for 2 or 3 seconds. After a few seconds you should see the "battery charging in progress" message. Then leave it to charge for 30 mins. While it is charging, download your training history to your PC.



    Once it has charged for a while. Remove it from the charger and switch the unit off.



    Press and hold the Mode button and then press the Lap/reset button as well and hold them both for 2 or 3 seconds.



    Then press and hold the Mode button again and this time also press and hold the Power button. The unit should switch on and have a message on the screen saying ?Do you really wish to erase all user data?. Select YES and press enter. The unit will reboot and ask you some questions including if you have a heart rate and cadence sensor.



    I then asked them again:



    Before I do the 2nd step which resets the data, will it erase only the training data (tracks etc.), or also all the other user data like profile and such?

    If yes, are these can be backed up too?



    Why is the complete reset required if the Edge is back to life? Do you suspect some data corruption or inconsistency?



    And they replied:



    The complete reset is required because this could occur again in a few days time. The complete reset will wipe everything including history, workouts, courses, user profile, data field settings and almanac data.



    The first time you connect the GPS to your PC after doing the reset you will get a message saying that the profile on the device is different from the profile in the program. You will need to choose to keep the profile in the program which will then transfer your user profile back into the GPS from Training Center.

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It definetely seems to be a Course issue with the 305. My battery completely drained, and upon trying to plug it into the Training Center, it would charge but would not sync. I deleted a few of my more recent courses on the watch without luck. I deleted a few more; still with no luck. I finally deleted them all, not really expecting it to work, but it did! I didn't lose any runs and my courses are still on the training center, which I could push back onto my watch (although I am not sure if I will, if it causes me to run into this problem again).

Simple solution: On your watch, go to Training / Courses / then proceed to delete each course. Once they are ALL deleted, plug your watch back in and click Receive from device button...it should work.

Posted on Sep 07, 2009

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I just had the same problem. The problem is definitely with the courses. My problem started after I sent a workout from TC to the watch. My solution was just to delete all of the "courses" from the watch, not from TC. Once the courses were deleted from the watch, I could send data from the watch to TC again without a problem. I'm using a forerunner 305.

Also if you keep backups of your computer, just close TC then restore the directory "C:\Documents and Settings\All Users\Application Data\garmin\Training Center". That will restore all of your history to TC. This is for WinXP, other OS's are probably similar.

Posted on Jan 09, 2010

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I had same issues with Forerunner "not communicating" Tried completely reseting gps. Tried new cradle. Nothing helped.

I then tried a different USB cable from my Garmin Nuvi, and it found the device and synced right up.

Posted on Jul 14, 2010

  • farmboy811 Sep 02, 2010

    I borrowed a USB cable for my son's camera and then I was able to communicate. I bought a new Garmin cable for about $15 and that solved the problem. The SKU is 010-10723-01.

    I found it athttp://www.4x4books.com for $12.95 plus shipping but you can also get it directly from Garmin for a few dollars more;
    https://buy.garmin.com/shop/shop.do?pID=... orhttp://www.garmin.com/garmin/cms/site/us

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The issue for me was with my USB port in the computer. Some usb ports, especially those on the front of computers (and all on laptops), will will go into a powersaver mode. When they go into this preservation mode, they can still charge the Garmin, but it has issues with transmitting data (evidently more energy intensive). The usb ports can be reached through your Control Panel, and you can elect not to have the port go in to efficient mode (google for specific instructions).

Since I made this correction, I haven't had a single problem.

Posted on Dec 06, 2009

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I have bought my Garmin Forerunner 305 and done my first run tonight with it. I was really impressed and made a course from my run. All backed up fine. I then made a second course from it and backed up and it got the COMMUNICATON ERROR as other have had.
I installed the S/W on another computer and it still failed.
I removed all courses from S/W and watch and it worked again, then I just made one course and it still works.
Try it - might work for you too!
Stuart

Posted on Aug 25, 2009

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If you import courses from TC to the 305 edge or forerunner it will not transfer to TC the next time you try. You can transfer the files to other programs without a problem. Apparently the problem is with TC not the device. To fix this delete your routes and you should be able to transfer the history with out a problem. I don't understand the problem, but this worked for me.

Posted on Jul 19, 2009

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I had this problem intermittently with my Garmin 305 for several months. I found out the cause the hard way. After buying a new 305, I took my old cradle to work so I would have one at home and at the office. When I tried to synch my new device at the office, I got the error message. My fix: Peel the pad of the back of the cradle. Remove 3 screws and take the two cradle halves apart. Remove small circuit board with the USB connector. Use a pencil eraser to burnish the gold pads on the circuit board. Also burnish the gold connectors on the top half of the cradle that mate to the gold pads. Re-assemble. Now it works good as new. Also, make sure to wipe off your sweaty device before putting it on the cradle, so that sweat does not make its way to the contacts and cause corrosion.

Posted on Jul 27, 2010

  • burbr Sep 19, 2010

    I tried the deleting the watch history and that worked, but only for a few transfers. I did not take the cradle apart as advised here, but I used a pencil eraser and burnished the contacts on the watch and the cradle and it did the upload immediately. I am keeping my fingers crossed.

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I deleted, manually all workouts and all history off the watch. Then I used the garmin webupdater program to erase the latest update off the watch and reinstall it. So far it appears to be working. I'll post back in a few days with an update.
yeah it bites that i lost about 1/2 a month of training data and I have to re type in my training programs, but if this fixes the problem, I will be VERY happy!
Eric

Posted on Sep 22, 2008

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I have had the same issue now with my second 305. I returned my first thinking it was a defective system and reordered another one. I used it about 3 runs and got the error again. I got really upset (because the watch is great when it works). I deleted all the routes on the Training Center and the watch of courses I ran. I uploaded my latest data from the watch and the error no longer appeared and then I just sent the old routes back to the watch. Problem solved. Hope it works for you too.

Posted on Aug 13, 2008

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I was having a similar problem. Training Center would autolaunch when the 305 was plugged in, but it would not autodownload, and trying to download would give the "Device not plugged in" error. The device did show up Windows Device Manager.

What I found is that the Garmin USB driver does not like VirtualBox talking to it at the same time as GTC. When I quit my VirtualBox window and reconnected the watch, GTC came up and downloaded like normal.

So make sure you shut down VirtualBox/Vmware, etc. before trying to download.

Posted on Nov 09, 2012

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I have two 305's, so I have two charging cradles. One would not import, but when I plugged the second one in, it did...after installing the drivers automatically. Not sure what the deal is, but it seems to have something to do with the drivers. I am using Windows 7. I had used the other dock for a couple of years...so this was a surprise.

I had used the other cradle several times, but I noticed this time it was not auto-launching the Training Center when docking. I cleaned the contacts with an eraser and that did not help, either.

Make sure you try to reboot if you are seeing issues. Also try unplugging the dock and plugging it in to a different USB plug.

Posted on Jun 18, 2012

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This solution worked! Thanks! I was using the front USB port and have not had a problem until today. As a quick workaround, I used the rear USB port and aside from getting a notification on Windows that a new device was being installed, it transferred the data as usual.

Posted on Nov 14, 2011

Delete new courses you uploaded ...some have bad data ponts that cause the error

Posted on Jul 01, 2008

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Information to computer


I did have exactly the same problem.
I think what caused the unit to stop communicating with the computer was that somehow I switched to "multisport" mode.
I was cycling and somehow I switch to running.

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Then, download the latest Garmin "Training Center". This worked for me, I'm relieved now.

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