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Just ran the update to V12.12.1.1. When I try to run iTunes i get error message that code execution cannot proceed because dnssd.dll not found, try reinstalling. I have run Repair, I have Uninstalled and Reinstalled, I have run sfc /scannow. Problem remains.
Windows, Windows 10
Hi jcommerce,
I encounter this same issue every few months and the solutions posted in here never worked for me.
However, this always works for me:
The Airport Utility Setup installs and registers the missing DLL in 32-bit and 64-bit, this is what always gets my iTunes running again. The iTunes setup itself for some reason does not bring the DLLs it needs, which the Community Specialists in here don't seem to know.
Hi jcommerce,
I encounter this same issue every few months and the solutions posted in here never worked for me.
However, this always works for me:
The Airport Utility Setup installs and registers the missing DLL in 32-bit and 64-bit, this is what always gets my iTunes running again. The iTunes setup itself for some reason does not bring the DLLs it needs, which the Community Specialists in here don't seem to know.
Save your money. Reinstalling Bonjour should fix the issue and install dnssd.dll.
Thank you, Brian. I followed the steps on the “Remove and reinstall iTunes and
related software components” page. I was able to uninstall iTunes, Apple Software
Update, the most recent Apple Mobile Device Support, the Apple Application
Support 32-bit, and the Apple Application Support 64-bit. But my attempts to
uninstall Apple Mobile Device Support 2017 failed. My attempt to Uninstall Bonjour
failed “because it is intended for 32-bit versions of Windows. Please obtain
the 64-bit installer from (an apple URL).” But when I went to the URL it gave, the page
no longer existed. I then went through the steps to remove any of the folders mentioned
that were in the Program Files and its Common Folder, as well as in the Program
Files (x86) and its Common Folder. I emptied the Recycle Bin, restarted my
computer, downloaded the latest version of iTunes from the Microsoft Store, and
installed it. When I ran iTunes I received a message that “your previous iTunes
must be removed. Would you like to remove it?” I clicked “Yes,” and it said “iTunes
could not remove your previous installation. Remove it using the Programs and
Features control panel.” I opened the Panel and again tried to remove Apple Mobile
Device Support 2017 and Bonjour, but again no luck.
Thank you for your response. I resolved the problem by purchasing iMyFone iTunes Fix (Windows version), 1-Year Plan, for $14.95 USD. It was able to remove the 2017 Apple Support Services program and the old Bonjour program, which seemed to be the cause of my problem. Since applying the fix, which worked, a new version of iTunes was released, I was able to upgrade without incident, so the fix appears to have permanently resolved the problem. If it does reoccur, I will try your recommendation.
Actually this fixed my problem!! I can use Itunes again and didnt loose my iphone back ups.
Its very dissapointing that i call support and the representative told me that nothing could be done that i should uninistall Itunes and re install but i would loose my back ups!! Thanks again for this!!
Greetings, jcommerce.
Welcome to the Apple Support Communities. We can understand why you’d want to resolve the issue with being unable to update iTunes due to the "dnssd.dll not found” error.
Start by working through these steps: If you can't install or update iTunes for Windows
If the issue continues, check out:Resolve issues between iTunes and third-party security software
We hope this helps! Thanks for being a part of the community.
Sincerely.
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. When reinstalling right click on the downloaded setup file and use run as administrator. It may also help to temporarily disable any non-Microsoft anti-virus.
Review the other boxes and the list of support documents further down the page in case one of them applies.
The further information area has direct links to the current and recent builds in case you have problems downloading, or want to revert to an older version if the current one won't work properly for you at the moment. Links to the most recent builds are now at the bottom of the page.
Your library and device backups should be unaffected by these steps but there are links to backup and recovery advice should it be needed.
tt2
Thank you for your response. I resolved the problem by purchasing iMyFone iTunes Fix (Windows version), 1-Year Plan, for $14.95 USD. It was able to remove the 2017 Apple Support Services program and the old Bonjour program, which seemed to be the cause of my problem. Since applying the fix, which worked, a new version of iTunes was released, I was able to upgrade without incident, so the fix appears to have permanently resolved the problem. If it does reoccur, I will try your recommendation.
Thanks for your response. The problem was that I could not uninstall the old Bonjour, which was preventing me from installing the new Bonjour. The iMyPhone program was able to successfully do that. So for me the $15 was worth not having to spend any more time trying to resolve the problem.
dnssd.dll not found
