Lightroom 5 won't open, always asks for serial number

I just bought Lightroom and the installation went without problems. I entered the serial number and then tried to open the program for the first time but instead of opening it's always aksing me to enter the serial number.
Anyone able to help me with this? I'm using a MacBook Pro late 2013 OS X 10.9.2

I'm still having the problem, it's really frustrating. I think I have deinstalled everything at least 10 times and nothing seems to be working. Would be very grateful if anyone has an idea how to solve this problem.

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If you have Waveburner on your Mac, (as Waveburner is discontinued and not sold any longer) this means you must have installed a much earlier version of Logic Studio on your Mac at some point... and the serial Waveburner wants, came with Logic Studio...
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CC does not allow the programs to recognize my new license, always asks for serial number.

I bought 2 Adobe CC licenses and installed the suite in 2 Mac Pros, in the first machine the programs like photoshop are installed complete, and recognized the license immediately. But in the second machine each program ask for a serial number or continue using it as trial. I have an Adobe ID created for this machine in the Adobe CC console and assigned to the second license. In the console everything looks ok, but the programs still ask for a serial number.
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Moving this discussion to the Creative Cloud Download & Install forum.
Jimmycastle if you are being prompted for a serial number then it is likely your second computer is unable to reach our activation server. Please see Sign in, activation, or connection errors | CC, CS6, CS5.5 - http://helpx.adobe.com/x-productkb/policy-pricing/activation-network-issues.html for information on how to correct this.

I have purchased Photoshop CC but I'm still unable to download and open lightroom, it still asks for serial number?

Can any one help me being able to download LR as I've purchased photoshop and lightroom, but i'm still unable to open lightroom it keeps asking for serial number and won't open.
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Uninstall the serial-number LR5, the one you have installed, now, then quit the CC Desktop application (gear/quit or right-click quit), then restart the CC Desktop application, which will rescan and see that LR is no longer installed, and will offer LR in the CC Desktop apps list with an Install button next to it, so install that version.

I purchase Lightroom 6 upgrade and during installation the product won't download using the serial number provided. It then asks for serial number of previous installation (lightroom5) but does not recognise it once inserted. Please help!

i purchase Lightroom 6 upgrade and during installation the product won't download using the serial number provided. It then asks for serial number of previous installation (lightroom5) but does not recognise it once inserted. Please help!

Yes, I have a TLP license, so which kind of upgrade should I buy?
I'm an Italian user and I would prefer to contact support by web chat but I can't find it in the website, please can you help me? Thank you, I'm desperate!

Lightroom 3 asks for serial number launching in non-admin account

The following information was provided by Carey Burgess (Adobe Employee):
Does Lightroom 3 launch and work fine in an admin account, but when you launch the application in a standard (i.e. non-admin) account it asks for a serial number?
If so, then it is likely due to a file permissions issue either in the original (admin) account or with the standard account.
(Although you need administrator access to install Lightroom, and you do need proper access permissions to your photos, you should be able to run Lightroom without issue in a standard user account.)
Lightroom 3 stores registration data (the serial number) in a file called Lightroom 3.0 Registration, which is stored by default in one of these locations:
    * Mac OS: /Library/Application Support/Adobe/Lightroom
    * Windows XP: C:\Documents and Settings\All Users\Application Data\Adobe\Lightroom
    * Windows 7/Vista: C:\ProgramData\Adobe\Lightroom
- Check for the registration file in the appropriate location for your system.
If the file does not exist in that location, then ensure you are logged in with the admin account (the one where Lightroom doesn't prompt for a serial number) and check the user-specific location instead:
    * Mac OS: /Users/YOUR USER NAME/Library/Application Support/Adobe/Lightroom
    * Windows XP: C:\Documents and Settings\YOUR USER NAME\Application Data\Adobe\Lightroom
    * Windows 7/Vista: C:\Users\YOUR USER NAME\AppData\Roaming\Adobe\Lightroom
If the file exists in the user-specific location instead, then I would suggest that you ensure that you have quit Lightroom, and then move the registration file from the user location to the default system-wide location. Lightroom should now no longer prompt for serial number when you open it from a non-admin account.
If the registration file did (or now does) exist in the default system-wide location, but you are still being prompted to enter a serial number when opening Lightroom in a standard user account, then that account does not have sufficient access permission to the registration file.
To resolve this aspect, there are two possible solutions (the first being the recommended solution):
1. Change the access permissions on the Lightroom folder that contains the registration file to grant "Read" access for the standard user account. (You can do this for each account individually, or you can use a broader group like Everyone.)
For more information about changing permissions, see one of these articles:
    * Windows XP: http://support.microsoft.com/kb/308419#4
    * Windows Vista/Windows 7: http://windows.microsoft.com/en-us/windows7/What-are-permissions
    * Mac OS: http://docs.info.apple.com/article.html?path=Mac/10.6/en/8342.html
2. Copy the registration file from the system-wide location to the user-specific location for the standard user account. (You would need to repeat this step for each standard user that needs access to Lightroom.)
Reply here if these steps do not resolve your issue, or if you have any questions.

Months ago, I had a routine clearout of old software boxes etc and chucked out my Lightroom 1.0 box. A couple of weeks ago I reinstalled Lion on my mac to find that I cannot register Lightroom. I have the 3.0 upgrade serial, the 2.0 upgrade serial, but the 1.0 was on the box..
I followed the instructions above to find the files in crashplan form before the fomat that hold the registration details. I have tried placing them in the location described, but it doesn't seem to work.
The serials (or something) are in the file, but given in the string that is difficult to decipher - and doesn't work in the registration screen, wrong size and a mix of letters and numbers rather than just numbers as my 3.0 serial is.
Any suggestions for what I could do? Could I send the strings in to Adobe to be deciphered? Perhaps move files around a bit more?
Thanks in advance,
Rog.

Cc lightroom trouble asking for serial number

I purchased the cc photography package. I was able to download and open Photoshop but unable to open lightroom. It ask for a serial number. I tried the trouble shooting tips still having trouble.

Hi Kirstygem,
If the above mentioned steps have not helped , can you please try the below mentioned article. Although its for LR3 but its still effective for the newer version .
Lightroom 3 asks for serial number launching in non-admin account
Updated kb For LR5 : Preference and other file locations in Lightroom 5
Do let us know if this worked for you or not .
Cheers,
Kartikay Sharma

Lightroom (Cloud version) keeps asking for serial number. [was: HELP!]

I purchased the creative cloud photography plan. I downloaded creative cloud and tried to start using lightroom but it keeps asking for a serial number and I dont have one I bought it all online and it wont let me use lightroom help!

Ask for serial number http://helpx.adobe.com/creative-cloud/kb/ccm-prompt-serial-number.html
Does your Cloud subscription properly show on your account page?
If you have more than one email, are you sure you are using the correct Adobe ID?
https://www.adobe.com/account.html for subscriptions on your Adobe page
If yes
Some general information for a Cloud subscription
Cloud programs do not use serial numbers... you log in to your paid Cloud account to download & install & activate... you MAY need to log out of the Cloud and restart your computer and log back in to the Cloud for things to work
Log out of your Cloud account... Restart your computer... Log in to your paid Cloud account
-Sign in help http://helpx.adobe.com/x-productkb/policy-pricing/account-password-sign-faq.html
-http://helpx.adobe.com/creative-cloud/kb/sign-in-out-creative-cloud-desktop-app.html
-http://helpx.adobe.com/x-productkb/policy-pricing/activation-network-issues.html
-http://helpx.adobe.com/creative-suite/kb/trial--1-launch.html
-ID help https://helpx.adobe.com/contact.html?step=ZNA_id-signing_stillNeedHelp
-http://helpx.adobe.com/creative-cloud/kb/license-this-software.html
If no
This is an open forum, not Adobe support... you need Adobe staff to help
Adobe contact information - http://helpx.adobe.com/contact.html
-Select your product and what you need help with
-Click on the blue box "Still need help? Contact us"

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See this thread and see if it helps:
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Hello! Lightroom is asking for serial number, which I don't have, despite just buying the Cloud? Any ideas how I can get it to work?

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