udhisapi.dll - Analyze and How to Fix Errors

★★★★☆ Verified File (27.08.2026)

⚠️ Important Notice: udhisapi.dll error resolution and system optimization tips. Manually replacing system libraries can brick future Windows updates or cause critical system failures.

Architecture:	other	️ Not detected
Antivirus scan	✅ Clean	No viruses detected.
Digital signature	🟡 Not signed	Signature missing. The file may have been modified.
Hash Integrity	ℹ️ Unverified	File Hash protection is missing.
File size	262 bytes.	262 bytes.

Hashes:

MD5: cebd1ba9f3c12a042962bbf2f648527d
SHA-1: da250607d4def28afeb1ede5dbf9bea89317188d
SHA-256: 97b9063bb699ad81e7d5436b05936ec7ec35429ba62ab005cb3424bedd92921d
SHA-512: d1de851d97f7980a14e97eb27abcf239f6855afc2bab426d3f71effab1028c9b2bd6b3e15d6757d36440ae15865947dab18e09176eef3e8259d7289235d50ba8

The file udhisapi.dll is a dynamic link library associated with specialized printer drivers and accounting software, most notably used in Ubiquiti Networks environments or specific print management systems like UniPrint and UTax/Kyocera print monitors.

File Description & Location

Description: It typically functions as an ISAPI (Internet Server Extension) or a specialized port monitor/print driver component that handles communication between software applications and printing hardware.
Standard Location: C:\Windows\System32\ or within specific program directories such as C:\Program Files\UniPrint\ or C:\Program Files\Kyocera\.

How to Fix udhisapi.dll Errors Without Downloading

You can fix errors related to this file using built-in Windows utilities, eliminating the need to download files from third-party websites.

1. Repair Corrupted System Files

Windows has built-in tools to find and automatically replace missing or corrupted system files.

Press the Windows Key, type cmd, right-click Command Prompt, and select Run as administrator.
Type sfc /scannow and press Enter. Wait for the scan to finish.
Type DISM /Online /Cleanup-Image /RestoreHealth and press Enter.
Restart your computer.

2. Re-register the DLL File

If the file exists but Windows cannot read it, re-registering it through the command line can resolve the error.

Open Command Prompt as an administrator.
Type regsvr32 /u udhisapi.dll and press Enter (this unregisters the file).
Type regsvr32 udhisapi.dll and press Enter (this re-registers the file).
Restart your computer.

3. Reinstall the Associated Printer Driver or Software

Since this file belongs to print management utilities, reinstalling the software will safely restore the file.

Press Windows Key + R, type appwiz.cpl, and press Enter.
Locate your print management software (e.g., UniPrint, Kyocera Print Center, or Ubiquiti software tools).
Right-click the application and select Uninstall.
Restart your PC, then run the official installer for that software again to cleanly replace the file.

4. Restore the File via Windows System Restore

If the error started happening recently, you can roll your system back to a time when it worked perfectly.

Press the Windows Key, type Create a restore point, and click the top result.
Click the System Restore... button.
Choose a restore point dated before the error started appearing.
Follow the on-screen prompts and let Windows restart to restore your configuration.

If you would like to narrow down the issue, please tell me:

The exact error message you see on your screen.
What action or program triggers the error.
Your Windows operating system version (e.g., Windows 10 or 11).

📊 Diagnostics Tool: Verify Your `udhisapi.dll` File

Worried that the file on your PC has been modified by malware? Drop it into the form below. Our script will verify its file size, cryptographic hash (MD5/SHA-1), and check for a valid Microsoft digital signature.

Other versions:
️ udhisapi.dll 10.0.19041.5794 32-bit (x86) | ️ udhisapi.dll 10.0.19041.5794 64-bit (x64)