When i try to start itunes i get a message saying that the MSVCR80.dll file is missing and to reinstall itunes. When I try to reinstall itunes it tells me that I have an Error 7 (windows error 126). Can anybody tell me what this means? Thanks

Go to Control Panel > Add or Remove Programs (Win XP) or Programs and Features (later)
Remove all of these items in the following order:
iTunes
Apple Software Update
Apple Mobile Device Support (if this won't uninstall move on to the next item)
Bonjour
Apple Application Support
Reboot, download iTunes, then reinstall, either using an account with administrative rights, or right-clicking the downloaded installer and selecting Run as Administrator.
The uninstall and reinstall process will preserve your iTunes library and settings, but ideally you would back up the library and your other important personal documents and data on a regular basis. See this user tip for a suggested technique.
Please note:
Some users may need to follow all the steps in whichever of the following support documents applies to their system. These include some additional manual file and folder deletions not mentioned above.
HT1925: Removing and Reinstalling iTunes for Windows XP
HT1923: Removing and reinstalling iTunes for Windows Vista, Windows 7, or Windows 8
tt2

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I was installing an update when I got the error message that the MSVCR80.dll file was missing. It wants me to reload itunes. What do I do?

I was installing an update when I ogt the error message that the MSVCR80.dll file was missing and windows error 126. What do I do?

For general advice see Troubleshooting issues with iTunes for Windows updates.
The steps in the second box are a guide to removing everything related to iTunes and then rebuilding it which is often a good starting point unless the symptoms indicate a more specific approach. Review the other boxes and the list of support documents further down page in case one of them applies.
Your library should be unaffected by these steps but there is backup and recovery advice elsewhere in the user tip.
tt2

HT6001 The MSVCR80.dll file is missing and every attempt at reinstalling is yielding the same results. What can I do? This started since installing the 11.1.4 update.

I don't know what to do to fix this. Please help me out

Troubleshooting issues with iTunes for Windows updates - MSVCR80

When I try to start Firefox, I get a message saying that Firefox is already running and cannot be re-started, so close down and reboot.

Following an upgrade of my OS from XP to Vista, I tried to point the new installation at my old profile. Now when I try to start FF, I get a message saying that it is already running and I should reboot to clear the problem. I've done that but the problem remains. I have uninstalled firefox and reinstalled v4 beta. The problem remains. Any ideas?

OK, I had moved the profile file inside the profile folder which was created when I installed FF, to the main FF folder. I then took the equivalent file which existed under XP before my upgrade to vista, and moved it into the new Profile folder. That's when I hit the problem described in the initial question.
So, what I did following Tony's response was to move the bookmarks password and cookies files into the profile created on the install. I then moved that file into the profile folder and moved the one I'd saved from XP, out to the main FF folder.
Started FF and voila! All working fine. Thanks for your help.

I can't run itunes or install updates now due to teh MSVCR80.dll file not found and APS Daemon.exe being nable to locate a component ofn Windows vists. A MS user suggested uninstalling all Apple programs. I did this but could not uninstall the Apple Mob

I have been getting error messages .n MS windows the APS Daemon ,exe is unable to locate a component and the itunes updates and program failed to start because MSVCR80,dll was not found. As advised I have uninstalled all Apple Inc. programs except the Apple Mobile Device program. Then I reinstalled itunes but still get the errors and can't run itunes. Advice....

See Troubleshooting issues with iTunes for Windows updates.
tt2

I have recently started downloading video files. I have downloaded a season of a tv show. The season had 9 episodes. Three downloaded fine and the other 6 will not. When i try to download them i get a message saying error -34 The disk you are attempting t

I have recently started downloading video files. I
have downloaded a season of a tv show. The season had
9 episodes. Three downloaded fine and the other 6
will not. When i try to download them i get a message
saying error
-34 The disk you are attempting to use is full.
Remove files and empty recycle bin to create space. I
dont understand why it keeps doing this. I have lots
of space on itunes and my computer is not full
either.What can i do? How can i prevent this? Is
there a problem with my computer? Thank you!

have a look at this support article.

I have an ipod touch 5th gen and when connected to itunes i get a message saying itunes was unable to load data class information from sync services. reconnect or try again later. anyone got any ideas? i've tried most things on most forums but still no jo

i have an ipod touch 5th gen and when connected to itunes i get a message saying itunes was unable to load data class information from sync services. reconnect or try again later. anyone got any ideas? i've tried most things on most forums but still no joy

Try here:
iTunes for Windows: "Unable to load data class" or "Unable to load provider data" sync services alert
If not successful see the previous discussion on the right side of this page with the green checkmark.

HT1923 I get a message-error opening installationlog file. Verify that the specified lof file location exists and is writeable-when I try to uninstall iTunes and other components

I get a message-error opening installationlog file. Verify that the specified lof file location exists and is writeable-when I try to uninstall iTunes and other components. How can I uninstall and reinstall iTunes?

Hey jemerritt,
Thanks for the question. I understand you are experiencing issues with iTunes for Windows. The following resources may help to resolve your issue:
iTunes 11.1.4 for Windows: Unable to install or open
http://support.apple.com/kb/TS5376
Issues installing iTunes or QuickTime for Windows
http://support.apple.com/kb/HT1926
Thanks,
Matt M.

Every time I try to open itunes I get a message saying "runtime error. An application has made an attempt to load the C runtime library incorrectly. I have already un- and re-installed it, but i get the same message as before. How do i fix this?

every time I try to open itunes I get a message saying "runtime error. An application has made an attempt to load the C runtime library incorrectly. I have already un- and re-installed it, but i get the same message as before. How do i fix this? I don't want to lose my music and would at least want to save that.

Follow the instructions of tt2 given in https://discussions.apple.com/thread/5822086 and note to run as admin

When I try to open iTunes from my PC, I get a message "aps daemon.exe MSVCR80.dll not found reinstall"

When I try to open iTunes from my PC, I get a message "aps daemon.exe MSVCR80.dll not found reinstall"
I have redownloaded iTunes and still get the same message. It has to do with my Windows Vista in some way? I cannot sync my iPad2, iOS 7.0.4 with my PC.
Can anyone help me? I don't want to lose the thousand and one things I've bought.

Uninstall your existing copy of iTunes. Delete any copies of the iTunesSetup.exe (or iTunes64Setup.exe) installer files from your downloads areas for your web browsers and download a fresh copy of the iTunes installer from the Apple website:
http://www.apple.com/itunes/download/
(The current build of the 11.1.4.62 installer was changed a few days ago, which fixed the bulk of the reports of MSVCR80.dll/R6034/APSDaemon.exe/Error-7/AMDS-could-not-start trouble ... but the build number on the installer was not changed. So we're trying to make sure you do the reinstall using a "new good" 11.1.4.62 installer instead of an "old bad".)
Does the install with the new copy of the installer go through properly? If so, does that clear up the error message?
If you still have the same error messages cropping up, then try the procedures from the following user tip:
Troubleshooting issues with iTunes for Windows updates

Just started getting an APS Daemon.exe-System Error saying my MSVCR80.dll file is missing. I tried to reinstall itunes, but got another error message. Anyone having this problem or know how to fix it?

Just last 2 days started getting an APS Daemon.exe-System Error saying my MSVCR80.dll file is missing when booting up my PC with Windows 7. I tried to reinstall itunes, but got another error message. Anyone having this problem or know how to fix it?
I now see the message from tt2 and will try that. Thanks!

Read this:
MSVCR80.dll missing, cannot install iTunes

After an unsuccessful itunes update i now get an "msvcr80.dll file is missing on my computer message. I tried reinstalling it for the microsoft site and it says it was successful but i still get the error message when i reboot. Any suggestions? Thanks

After an unsuccessful Itunes update I started getting a "msvcr80.dll file is missing from your computer" message. I downloaded and installed the Microsoft Visual C++ file and it said the reinstallation was successful but I still get the same error message and Itunes won"t install or run. Any suggestions? Thanks

Hey colorado65,
Follow the steps in this link to resolve the issue:
iTunes 11.1.4 for Windows: Unable to install or open
http://support.apple.com/kb/TS5376
When you uninstall, the items you uninstall and the order in which you do so are particularly important:
Use the Control Panel to uninstall iTunes and related software components in the following order and then restart your computer:
iTunes
Apple Software Update
Apple Mobile Device Support
Bonjour
Apple Application Support (iTunes 9 or later)
Important: Uninstalling these components in a different order, or only uninstalling some of these components may have unintended affects.
Let us know if following that article and uninstalling those components in that order helped the situation.
Welcome to Apple Support Communities!
All the best,
Delgadoh

HT203175 When I try to open itunes i get a message saying: File "iTunes library.itl" cannot be read because it was created by a newer version of itunes. Any help out there?

When I try to open itunes i get a message saying: File "iTunes library.itl" cannot be read because it was created by a newer version of itunes. And itunes will not start up. Any help out there?

Hi did you ever get a solution to this problem? Having the same issue myself!

HT1923 When I try to uninstall iTunes I get a message saying iTunes 64 msi can not be located and I should enter an alternate path. How would I know where it it is? I get the same message when trying to install the update to iTunes 10.6.1.

When I try to uninstall iTunes I get a message saying iTunes 64 msi can not be located and I should enter an alternate path. How would I know where it it is? I get the same message when trying to install the update to iTunes 10.6.1.

Download the Windows Installer CleanUp utility from the following page (use one of the links under the "DOWNLOAD LOCATIONS" thingy on the Major Geeks page):
http://majorgeeks.com/download.php?det=4459
To install the utility, doubleclick the msicuu2.exe file you downloaded.
Now run the utility ("Start > All Programs > Windows Install Clean Up"). In the list of programs that appears in CleanUp, select any iTunes entries and click "Remove", as per the following screenshot:
Quit out of CleanUp, restart the PC and try another iTunes install. Does it go through properly this time?

HT1923 I had to restore my computer and had to reinstall itunes. Now when I try to open itunes I get a message saying it is a new version than my itunes library. How do I fix this?

I had to restore my computer and had to reinstall itunes. Now when I try to open itunes I get a message saying it is a new version than my itunes library. How do I fix this?

Try the following document, only be sure that none of the boxes in the compatibility mode tab are checked (not just the compatibility mode box itself):
iTunes for Windows: How to turn off Compatibility Mode

When i try to start itunes i get a message saying that the MSVCR80.dll file is missing and to reinstall itunes. When I try to reinstall itunes it tells me that I have an Error 7 (windows error 126). Can anybody tell me what this means? Thanks

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