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What to do when Userdata.dll is missing in Windows 10
7 min. read
Updated onMarch 27, 2024
updated onMarch 27, 2024
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Key notes
Userdata is a shared DLL (Dynamic Link Library) system file that some software need to run.
Some users have stated that a userdata.dll error message pops up whenever they start Windows or when trying to manually open a specific program.
The userdata.dll error message states:This application failed to start because userdata.dll was not found. Reinstalling the application may fix this problem.
Another related error message you can encounter is:The program can’t start because userdata.dll is missing from your computer. Try reinstalling the program to fix this problem.
This error message usually pops up when the userdata.dll is either missing or corrupted in some way. Consequently, software that needs the user data file can’t access it.
The same error message can pop up for other DLL files, and the fixes for it are pretty similar. Keep reading to learn how to fix theuserdata.dll is missingerror message inWindows 10.
How do I fix userdata.dll problems in Windows 10?
1. Use a dedicated tool
There are plenty ofthird-party repair programsout there that promise to fix or replace missing or broken DLLs, and most of them stay true to their word.
These tools are able to replace corrupt or missing DLL files with fresh, updated ones using their own Windows file databases.
2. Run a System File Checker scan
Note: If a virus or malware has corrupted userdata DLL, theSystem File Checkercan also repair it. This built-in solution will scan system files and replace any corrupted ones with a cached copy.
3. Update device drivers
Some users have stated that updating hardware drivers fixed the userdata.dll is missing error. So updating outdated or corrupted drivers is a potential resolution for the userdata.dll error.
However, it’s hard to tell what drivers you’ll need to update. Your best bet is to add software toWindows 10that will scan your drivers.
Outbyte Driver Updaterisa toolthat you can update AMD, Nvidia, and Intel drivers with, among others. You can download the tool for free to your Windows device by visiting the website indicated below.
Upon launch, the software automatically scans drivers and lists any that need updating. Select each indicated driver in turn and click theUpdatebutton to get the latest version compatible with your system.
Outbyte Driver Updaterhas a small footprint and you can let it run in the background and set it up to update and repair your drivers on a regular basis. This will save you lots of time and hassle and prevent driver-related issues from occurring again.
4. Scan the registry with CCleaner
Note: Registry problems are often the source of DLL file errors. It might be the case that there are invalid registry entries for userdata.dll. You can scan and repair the registry withthird-party toolslike CCleaner.
5. Remove programs from the Windows Startup
Note: Some users have said that they fixed the issue by removing the Password Manager Pro and Fingerprint Reader programs.
Thus, it might be the case that a startup program generates the error message. So removing software from the system startup is another potential fix for the userdata.dll error.
6. Rollback Windows with System Restore
Note:System Restorecan come in handy for fixing corrupted DLL files. With this utility, you can restoreWindows 10to an earlier point in time, which can fix corrupted system files.
in this case, you should select a restore point that will restore Windows to a date when the DLL error message did not pop up on your laptop or desktop.
7. Reinstall the software
Note: The userdata.dll is missing error message stating,Reinstalling the application may fix this problem. So that’s one hint about the specific app which might cause the error.
8. Get a new userdata.dll file
9. Add DLL Fixer software to Windows
There are numerous DLL fixer software for Windows that fix DLL errors. DLL Suite, DLL Tool, DLL Files Fixer, and Free DLL Fixer are some of the utilities that scan for and repair corrupted DLL files.
They also include databases that you can get replacement DLL files from. As such, those utilities might come in handy for fixing the userdata.dll is missing error.
You can try out an unregistered version of DLL Suite by clicking theStart Downloadbutton onthis page.
So these are a few resolutions that should fix the userdata.dll is missing error inWindows 10.
Note that some of the above resolutions might also fix missing DLL error messages for other files.
Matthew Adams
Windows Hardware Expert
Matthew is a freelancer who has produced a variety of articles on various topics related to technology. His main focus is the Windows OS and all the things surrounding it.
He is passionate about the tech world, always staying up-to-date with the latest and greatest. With an analytical view, he likes problem-solving, focusing on errors and their causes.
In his free time, he likes to read and write about history and tries to always develop new skills.
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Matthew Adams
Windows Hardware Expert
He is passionate about everything surrounding Microsoft’s OS, focusing on troubleshooting guides & tips for everyday problems.
