Quite a few readers have contacted me regarding problems installing applications on their Nokia E61. When installing <insert application name here> they get the following error message “Certificate Error contact the application supplier”. I have previously written about this in the comments section and in the FAQ but it is probably good to highlight it again.
For added protection against “malware” there is rather strict application signing procedure implemented for S60 3rd edition. The device comes with the standard setting to check for proper signatures and will not install applications unless they are correctly signed. Although the intention behind mandatory application signing is good it locks out applications that for some reason are not signed and approved. To accept all applications and solve this issue:Go to Tools > App. mgr > Options > Settings Change “software installation” from “Signed Only” to “All” and “Onlline certic check” to “off”. 
This will most likely solve your problem regarding installing unsigned application. However, please be aware that you turned off one extra layer of security for the device. Your IT department might not approve of this. I normally don't worry too much about malware or viruses but it is a good role of thumb to only download and install applications from known sources.
Update: I've created a separate post for how to solve the "Certificate Error" on the Nokia E62.
i have problem while opening adobe reader to nokia e50,
even i cant replace or install new reader it is showing that”Unable to install component is built in ”
So tell me how to uninstall the built in s/w of acrobat reader and install new one
Hi, I had a problem for 2 days with “Invalid Certificate” and I followed the steps in this blog i.e. Accept all………This site is now at the top of my fav’s
Thank’s guys
Superb!!
I’m afraid I’m in the same boat as Jatin Dhamija, Pc Paul, and aizen, where I changed both the certificate check setting to ‘off’ and the accept software to ‘all’ but am still getting a certificate error… error. Any more ideas?
p.s:Balagopal, I’m guessing but could be wrong, that your problem is that the .sis files you’re attempting to install are for Symbian S60 2nd edition. If so, they’re useless for the 3rd edition OS and can’t be converted. Sorry!
p.p.s: Admin Ed, I admire your patience in answering the ‘expired/outdated certificate” question SO many times! People just don’t seem to read anymore…
Hi,
My Nokia N70 is freezing and Hanging up, please suggest something.
I tried to remove the Memory Stcik but still the same. Also let me know from where I can get Nokia OS Symbian and how to install the same, someone provide me the instructions please, I think that I had installed something through Blue Tooth By Mistake… Thanks in Advance .
Regards
Vikas (New Delhi) - India.
Hello Admin,
My company is using Microsoft Exchange Server 2007 and i just configured mail for exchange for my bosses. the problem i am having is that i can synchronize mail internally but if i make any attempt to replace the name of my mail server with the published website name for my mail server, my configuration will not work. i get an “untrusted certificate received from server, contact your administrator”. i have tried all you recommended in your post but they don’t seems to work for me. please can anyone advise. one more thing, the certificate i use for publishing is not a third party certificate, it is a Windows certificate that i created on my own but i also use this certificate for my OWA and Outlook anywhere and it works just fine. pls help!!!!
hello i forgot to say, the nokia devices is E90 communicator and E61i
the nokia device are nokia E90 communicator and E61i . Pls i need your reply urgently
Well there 3 reason’s for the issue.
Can put them all in the right txt but if you
email me I will send you the fix for that
with the exchange. issue
By:Wesley Clouden
Mobile Media Content Producer
hello Wesley can you please write me at torijumo@gmail.com. I will appreciate it. Looking forward to your response
i have E51 when ever i install any program it gives certificate error i tried all above u tell but all in vain i don’t know wt to do
please help
I tried but it still not work.
I have Nokia E62 from Fido (CANADA), I cant install theme and softwares, the message was “Expired Certificate”
Hi,
i can’t download any thrme to my e61.I don’t know how to do so let me known about that.please…………..
Thanks…………
You guys are pretty smart,E61 is one of the greatest phones,but I can’t imagine why Nokia Company can’t take note of our complaints and rectify the problems,such as VIDEO STREAMING,ONLINE VIDEO WATCH,DOWNLOADING OF APPLICATIONS.
The main problem is APPLICATIONS COS,ONE ALWAYS GET ERROR RESPONSE.
I can’t get my NAVIGATION ON TRACK,IT SIMPLY WOULD’T function.My network provider points the finger to Nokia.
Pls help.
Hello ALL, while updating the firmware of my Nokia E61 (1st time I do this), I have accidentally disconnected the USB cable. The phone does not start anymore, only the light on the top left corner turns on and stays on. My PC no longer recognises it and it does not show up in PC Suite. Can anyone suggest how I can repair/reinstall the OS?
Thanks in advance. Ito (Spain)
Hello everybody! I have Nokia N73 and I have a problem installing themes. I never had this problem before. One day about a month ago it just simply stopped. I did everything from above and it still won’t work. I’m able to install other applications and games. Any suggestions?
I did the certificates thing a long time ago but now sometimes i get “Expired Certificate”, “Unable To Install”, or “Error: Certificate Expired, Certificate May Not Be Valid Yet, Or Problem With File, Contact Your Supplier” or some things like that, i know its because of the dates but its very uncool to have to change the date setting over and over again just to install a theme
Hi,
I have a Nokia E61i and i get this error message all the time - “This site has sent un untrusted certificate. Continue anyway?” It seems to happen really at random. I’m not even trying to install anything. I already defaulted the settings to Solftware Installation = All and Check Online Certificates = Off, and i still get it. I think it’s because of my Mail for Exchange (currently, that’s the only mail i have on my phone, so it must be it).
Please help!
I apologize if the answer is already posted on this page but i somehow overlooked it.
Thanks!
Maria
Im still having problems with the “certificate expired” error sign when im trying to install my themes.. Its driving me NUTS! can someone help me, My settings are correct “software installation” is ALL and “Onlline certic check” is OFF…. so what else can i do…
Someone help lol.. - My phones getting boring!!!
ey thanx,it really works,now im able to install themes on my nokia e51.
Hi,
After updating my firmware my e61i doesn’t install any .jar (java) applications anymore.
Is there any solution to this e.g. converting .jar –> .sis(x)???
Any help is appreciated.
Cheers.
HI
i hv E61i , i cant install “FExplorer” on it, even i allow unsigned application in application manager, plz help..
Hi Tan,
Can you install other applications or is this problem just with this application? Try downloading a new copy of the application and see it it works. Also, try to install another application to confirm that you really have set the application manager to accept “All”.
I have just updated my e61i with the version that support chinese language, previously was english and b. Indonesia. Something happened with themes i installed. If the theme is installed in the memory card, each time i restart the phone, it will be back to default ‘nokia’ theme. Once a time, after restarting my phone, with the theme still in ‘nokia’ theme, after i disconnected my e61i with my pc in data transfer mode, i got another surprise that my phone got back to theme i applied before i occassionally restarting the phone. Could anybody tell me what is happenning and how to make the memory card-installed theme become permanently applied in the phone even i restarting it. Fyi, the themes that i chose to install in phone memory is still applied even i restart the phone.
Another thing i got when i am typing this using notes in the phone. The cursor could not move to the upper row after reaching the starting point of each row, even i type/click the left direction button. But it does back to the beginning point of the first row when i type/click the right direction button when i am in the end of the typing. Up and down button are also fuction normally. Is this a bug? Kevin
Hi,
I have tried all options since 2 months to install Yahoo Go 2.0 or 3.0 on E61, including ALL and OFF, contact yahoo help, who also could not really help. Only option left is hard reset. Question is what data do i lose? I have backup on my PC for the contacts and calender. I believe i lose applications like Acrobat, etc. which i can re install. But would i have to re install the Operating System as well?
Also how do i do the hard reset?
Thanks
hi, i´m still having the problem whit Certificate Error it says “certificado caducado”, i already try whit Anthony´s solutions but it doesnt work, i don’t know what to do help me please. (sorry for my bad english)..
i juz got a second hand e65 and i found that some of the certificates in the certification manager r mising (probably deleted) would i get any problem?
hi guys actually my memory card applications does not work after phone restarts in nokia e61
my memory card applications does not work after phone restarts in nokia e61
Hello,
I never had problems installing applications on my e61i. But the phone broke, got repaired: and now I cannot install the Lotus Sametime application due to certificate error. I changed the Software Installation setting to ‘All’ but it makes no difference. Do you have another suggestion ?
Thanks,
Hi guys,
I’ve got a problem with my e61. I can’t get symbian OS started, only white screen and light. Bateery remove and reboot don’t work. I haven’t been downloading any software for a couple month.
Does anyone got thу same problem?
Hi there i Had Tried this option but its not working
i was trying to install ACM ( advanced Call Manager 2.69 ) cracked
but its gave me this error
Hi guys,
I need to install MFE on a few first gen E61s. The firmware is up to date and provider is Vodaphone UK.
Neither the SIS or SISX package will install.
Any ideas?
hi,
would appreciate if any one knows of a software (free) whihc can enable me to hide or lock my call log forder?
rgds,
saab
u have to flash your mobile,turn off your phone pressing send+3+* botton.then turn on it again.after that go to nokia web site.update your mobile software
hello i need help, i have a nokia E71, and i want to know if it could be possible to install an application on my phone to get a blackberry service,, cause my gril have a bb and i want to have a bb pin to send her messeges for this way. This it could be?
Thanks!!!
It works. Thanks a lot.
Rajib