Download isapnp.sys to Fix Errors

Sometimes Windows system displays error messages regarding corrupted or missing isapnp.sys files. Situations like that can occur, for example, during a software installation process. Each software program requires certain resources, libraries, and source data to work properly. Corrupted or nonexistent isapnp.sys file can therefore effect in failed execution of the started process.

isapnp.sys file PNP ISA Bus Driver. The file was developed by for use with software. Here you will find detailed information about the file and instructions how to proceed in the event of isapnp.sys related errors on your device. You can also download isapnp.sys file compatible with Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista, Windows Vista, Windows XP devices which will (most probably) allow you to solve the problem.

Compatible with: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista, Windows Vista, Windows XP

User popularity

3.1 Scanning for malicious software
3.2 System and driver update
3.3 System File Checker tool
3.4 System recovery

4 Download isapnp.sys

4.1 List of isapnp.sys file versions

File info

General information
Filename	isapnp.sys
File extension	SYS
Description	PNP ISA Bus Driver

Software
Program	Microsoft® Windows® Operating System
Author	Microsoft Corporation

Details
MIME type	application/octet-stream
File type	Driver
System	Windows NT 32-bit
Copyrights	© Microsoft Corporation. All rights reserved.
Character set	Unicode
Language cod	English (U.S.)

Most common isapnp.sys file related problems

There are various types of errors related to isapnp.sys file. isapnp.sys file may be located in wrong file directory on your device, may not be present in the system, or may be infected with malicious software and therefore not work correctly. Below is a list of most common error messages related to isapnp.sys file. If you encounter one listed below (or similar), please consider the following suggestions.

isapnp.sys is corrupted
isapnp.sys cannot be located
Runtime Error - isapnp.sys
isapnp.sys file error
isapnp.sys file cannot be loaded. Module was not found
cannot register isapnp.sys file:
isapnp.sys file could not be loaded
isapnp.sys file doesn't exist

isapnp.sys

Application could not be started because isapnp.sys file is missing. Reinstall the application to solve the problem.

Problems related to isapnp.sys can be addressed in various ways. Some methods are meant only for advanced users. If you don't have confidence in your skills, we suggest consulting a specialist. Fixing isapnp.sys file errors should be approached with utmost caution for any mistakes can result in unstable or unproperly working system. If you have the necassary skills, please proceed.

How to fix isapnp.sys errors in just few steps?

Remember, before taking any action related to system files perform a backup copy of your data!

isapnp.sys file errors can be caused by various factors, so its is beneficial to try to fix them using various methods.

Step 1: Scan your computer for any malicious software

Windows files are commonly attacked by malicious software that prevents them from working properly. First step in addressing problems with isapnp.sys file or any other Windows system files should be scanning the system for malicious software using an antivirus tool.

If by any chance you don't have any antivirus software installed on your system yet, you should do it immediately. Unprotected system is not only a source of file errors, but, more importantly, makes your system vulnerable to many dangers. If you don't know which antivirus tool to choose, consult this Wikipedia article – comparison of antivirus software.

Step 2: Update your system and drivers.

Installing relevant Microsoft Windows patches and updates may solve your problems related to isapnp.sys file. Use dedicated Windows tool to perform the update.

Go to the Windows "Start" menu
Type "Windows Update" in the search field
Choose the appropriate software program (name may vary depending on your system version)
Check if your system is up to date. If any unapplied updates are listed, install them immediately.
After the update has been done,restart your computer in order to complete the process.

Beside updating the system, it is recommended that you install latest device drivers, as drivers can influence proper working of isapnp.sys or other system files. In order to do so, go to your computer or device producer's website where you will find information regarding latest driver updates.

Step 3: Use System File Checker (SFC) tool

System File Checker is a Microsoft Windows tool. As the name suggests, the tool is used for identyfing and addressing system file related errors, including those related to isapnp.sys file. After an error related to%fileextension% file has been discovered, the program attempts to automatically replace the isapnp.sys file with properly working version. To use the tool:

Go to the Windows "Start" menu
Type "cmd" in the search field
Locate "Command Prompt" result – don't run it yet:
Click the right mouse button and select "Run as Administrator" option
Type "sfc /scannow" in console prompt to start the program and follow the instructions

Step 4: Restoring Windows system

Another approach is to restore system to previous state, before the isapnp.sys file error occured. In order to restore your system, follow the instructions below

Go to the Windows "Start" menu
Type "System Restore" in the search field
Start the system restore tool – it's name may differ depending on version of the system
The application will guide you through the process – read the messages carefully
After the process has finished, restart your computer.

If all the above-mentioned methods failed and the isapnp.sys file problem has not been resolved, proceed to the next step. Remember that the following steps are intended only for advanced users.

Download and replace isapnp.sys file

The last solution is to manually download and replace isapnp.sys file in appropriate folder on the disk. Select file version compatible with your operating system and click the "Download" button. Next, go to your web browser's "Downloaded" folder and copy the downloaded isapnp.sys file.

Go to the folder where the file should be located and paste the downloaded file. Below is the list of isapnp.sys file example directory paths.

Windows 10: C:\Windows\System32\drivers\
Windows 8.1: C:\Windows\System32\drivers\
Windows 8: 1: C:\Windows\System32\drivers\
Windows 7: ---
Windows Vista: ---
Windows Vista: ---
Windows XP: ---

If the steps did not solve your isapnp.sys file problem, you should consult a professional. A probability exists that the error(s) might be device-related and therefore should be resolved at the hardware level. A fresh operating system installation might be necessary – a faulty system installation process can result in data loss.

File versions list

Filename isapnp.sys

System Windows 10

File size 48032 bytes

Date 2017-03-18

Download

File details
	MD5	0ebd87cf2c7588a552f050313cc4514a
	SHA1	abccb1f5aff33816fce4d63181962e80e68ae39c
	SHA256	b94367420b38a672a1d3cd55e8384d116b77aa43400052020135a8dcb08d6b85
	CRC32	aa1b6367
	Example file location	C:\Windows\System32\drivers\

Filename isapnp.sys

System Windows 8.1

File size 48480 bytes

Date 2013-08-22

Download

File details
	MD5	2a0d17d431f13e87adcb28deec84f252
	SHA1	1071d6a32c6ccabfa3f678bcf9a92874083e129c
	SHA256	87c82734b58896bb71ee0707b70c4618d0e4895be1409e9b55668f11e1715f30
	CRC32	664a34ba
	Example file location	C:\Windows\System32\drivers\

Filename isapnp.sys

System Windows 8

File size 47856 bytes

Date 2012-07-26

Download

File details
	MD5	2e1347c9cc7ddb43183af725135acf0d
	SHA1	3b6a6d0ee5ac936a41ba118b0f05233e2aa921ff
	SHA256	08af2ddfd929332d0c373ca9ffd75e86a5109c6f228f6391c3ad4841922045bb
	CRC32	06876ecc
	Example file location	1: C:\Windows\System32\drivers\

Filename isapnp.sys

System Windows 7

File size 20544 bytes

Date 2009-07-14

Download

File details
	MD5	2f7b28dc3e1183e5eb418df55c204f38
	SHA1	f67ad688a479924839ddbcfab82e319ef1ede613
	SHA256	d40410a760965925d6f10959b2043f7bd4f68eafcf5e743af11ad860bd136548
	CRC32	10408b79
	Example file location	---

Filename isapnp.sys

System Windows Vista

File size 23608 bytes

Date 2008-01-21

Download

File details
	MD5	0672bfcedc6fc468a2b0500d81437f4f
	SHA1	c806bab7fd451e009a2bddf0f926cf8068768160
	SHA256	a0322b569c309f258684afeccd52924a33f363186261730469245b7fa357c645
	CRC32	86050169
	Example file location	---

Filename isapnp.sys

System Windows Vista

File size 21096 bytes

Date -0001-11-30

Download

File details
	MD5	d3bb520b31f28c1a065cd058e762ee73
	SHA1	c08ffb1a2abcb30b23e30cbffaa73efc46098f40
	SHA256	bb12691a17f6a73cb376907d1b36b90af04912ea0be1c2b2e0abe4f39fd23efa
	CRC32	d87360a8
	Example file location	---

Filename isapnp.sys

System Windows XP

File size 37248 bytes

Date 2008-04-14

Download

File details
	MD5	05a299ec56e52649b1cf2fc52d20f2d7
	SHA1	ef0e8df348b9be72f292bb7216ea381cbd0b0bab
	SHA256	2654619db3e6d6c385b63ab02f87d4241c4f0250cc31383d1b3586917166c2dc
	CRC32	8826c123
	Example file location	---