Microsoft Windows DLL RpcDiag.dll

How to Download, Fix, and Update RpcDiag.dll

Last Updated: 12/02/2024
[Time Needed for Reading: ~4-6 minutes]

RpcDiag.dll is considered a type of RPC Diagnostics file. It is most-commonly used in Microsoft® Windows® Operating System developed by Microsoft. It uses the DLL file extension and is considered a Win64 DLL (Driver) file.

The release of RpcDiag.dll introduced for Windows was on 11/08/2006 in Windows Vista. On 07/22/2009, version 6.1.7600.16385 (win7_rtm.090713-1255) was released for Windows 7.

This article discusses complete file details, DLL file troubleshooting instructions for problems with RpcDiag.dll, and a comprehensive set of free downloads for every file version that has been catalogued by our team.

File Analysis Provided by Jason Geater (Author)

File Overview

General Information ^✻
File Name:	RpcDiag.dll
File Extension:	DLL file extension
Description:	RPC Diagnostics
Object File Type:	Driver
File Operating System:	Windows NT 32-bit
MIME Type:	application/octet-stream
User Popularity Rating:

Developer and Software Information
Software Developer:	Microsoft Corporation
Software Program:	Microsoft® Windows® Operating System
Legal Copyright:	© Microsoft Corporation. All rights reserved.

File Details
Character Set:	Unicode
Language Code:	English (U.S.)
File Flags:	(none)
File Flags Mask:	0x003f
Entry Point:	0x1590
Code Size:	4096

View Other RpcDiag.dll Information

File Info	Description
File Size:	7.5 kB
File Modification Date/Time:	2009:07:14 01:41:53+00:00
File Inode Change Date/Time:	2017:11:05 07:07:15+00:00
File Type:	Win64 DLL
MIME Type:	application/octet-stream
Machine Type:	AMD AMD64
Time Stamp:	2009:07:14 01:32:28+00:00
PE Type:	PE32+
Linker Version:	9.0
Code Size:	4096
Initialized Data Size:	4096
Uninitialized Data Size:	0
Entry Point:	0x1590
OS Version:	6.1
Image Version:	6.1
Subsystem Version:	6.1
Subsystem:	Windows command line
File Version Number:	6.1.7600.16385
Product Version Number:	6.1.7600.16385
File Flags Mask:	0x003f
File Flags:	(none)
File OS:	Windows NT 32-bit
Object File Type:	Driver
File Subtype:	7
Language Code:	English (U.S.)
Character Set:	Unicode
Company Name:	Microsoft Corporation
File Description:	RPC Diagnostics
File Version:	6.1.7600.16385 (win7_rtm.090713-1255)
Internal Name:	RpcDiag.dll
Legal Copyright:	© Microsoft Corporation. All rights reserved.
Original Filename:	RpcDiag.dll
Product Name:	Microsoft® Windows® Operating System
Product Version:	6.1.7600.16385

^✻ Portions of file data provided by Exiftool (Phil Harvey) distributed under the Perl Artistic License.

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What are RpcDiag.dll Error Messages?

Dynamic Link Library RpcDiag.dll Errors

RpcDiag.dll is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like RpcDiag.dll, are essentially a "guide book" that stores information and instructions for executable (EXE) files - like _isdel.exe - to follow. These files were created so that multiple programs (eg. Windows) could share the same RpcDiag.dll file, saving valuable memory allocation, therefore making your computer run more efficiently.

Unfortunately, what makes DLL files so convenient and efficient, also makes them extremely vulnerable to problems. If something happens to a shared DLL file, either it goes missing or gets corrupted in some way, it can generate a "runtime" error message. Runtime is pretty self-explanatory; it means that these errors are triggered when RpcDiag.dll is attempted to be loaded either when Windows is starting up, or in some cases already running. Some of the most common RpcDiag.dll errors include:

Access Violation at address - RpcDiag.dll.
RpcDiag.dll could not be found.
Cannot find C:\Windows\System32\RpcDiag.dll.
Cannot register RpcDiag.dll.
Cannot start Windows. A required component is missing: RpcDiag.dll. Please install Windows again.
Failed to load RpcDiag.dll.
The application has failed to start because RpcDiag.dll was not found.
The file RpcDiag.dll is missing or corrupt.
This application failed to start because RpcDiag.dll was not found. Re-installing the application may fix this problem.

Your RpcDiag.dll file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with Windows), or deleted by a malware infection. Furthermore, RpcDiag.dll file corruption could be caused from a power outage when loading Windows, system crash while loading RpcDiag.dll, bad sectors on your storage media (usually your primary hard drive), or quite commonly, a malware infection. Thus, it's critical to make sure your anti-virus is kept up-to-date and scanning regularly.

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How to Fix RpcDiag.dll Errors in 3 Steps (Time to complete: ~5-15 minutes)

If you're encountering one of the error messages above, follow these troubleshooting steps to resolve your RpcDiag.dll issue. These troubleshooting steps are listed in the recommended order of execution.

Step 1: Restore your PC back to the latest restore point, "snapshot", or backup image before error occurred.

To begin System Restore (Windows XP, Vista, 7, 8, and 10):

Hit the Windows Start button
When you see the search box, type "System Restore" and press "ENTER".
In the search results, find and click System Restore.
Please enter the administrator password (if applicable / prompted).
Follow the steps in the System Restore Wizard to choose a relevant restore point.
Restore your computer to that backup image.

If the Step 1 fails to resolve the RpcDiag.dll error, please proceed to the Step 2 below.

Step 2: Run SFC (System File Checker) to restore the corrupt or missing RpcDiag.dll file.

System File Checker is a utility included with every Windows version that allows you scan and restore corrupted system files. Use the SFC tool to fix missing or corrupt RpcDiag.dll files (Windows XP, Vista, 7, 8, and 10):

Hit the Windows Start button
In the search box, type "cmd" but DO NOT PRESS "ENTER".
Press and hold "CTRL-Shift" on your keyboard while pressing "ENTER".
You'll be prompted with a permission dialog box.
In the box, click "YES".
You should have a black screen with a blinking cursor.
In that black screen, type "sfc /scannow" and hit "ENTER".
SFC will begin scanning for RpcDiag.dll issues and any other system file problems.
Follow any on-screen commands to complete the process.

Please be aware that this scan might take a while, so please be patient while it is working.

If this Step 2 fails as well, please proceed to the Step 3 below.

sfc /scannow

Step 3: Perform a Windows Update.

When the first two steps haven't solved your issue, it might be a good idea to run Windows Update. Many RpcDiag.dll error messages that are encountered can be contributed to an outdated Windows Operating System. To run Windows Update, please follow these easy steps:

Hit the Windows Start button
In the search box, type "Update" and press "ENTER".
In the Windows Update dialog box, click "Check for Updates" (or similar button depending on your Windows version)
If updates are available for download, click "Install Updates".
After the update is completed, restart your PC.

If Windows Update failed to resolve the RpcDiag.dll error message, please proceed to next step. Please note that this final step is recommended for advanced PC users only.

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If Those Steps Fail: Download and Replace Your RpcDiag.dll File (Caution: Advanced)

If none of the previous three troubleshooting steps have resolved your issue, you can try a more aggressive approach (Note: Not recommended for amateur PC users) by downloading and replacing your appropriate RpcDiag.dll file version. We maintain a comprehensive database of 100% malware-free RpcDiag.dll files for every applicable version of Windows. Please follow the steps below to download and properly replace you file:

Locate your Windows operating system version in the list of below "Download RpcDiag.dll Files".
Click the appropriate "Download Now" button and download your Windows file version.
Copy the file into the appropriate directory for your Windows version:

Windows Vista: C:\Windows\SysWOW64\
Windows Vista: C:\Windows\System32\
Windows 7: C:\Windows\System32\
Windows 7: C:\Windows\SysWOW64\

Restart your computer.

If this final step has failed and you're still encountering the error, you're only remaining option is to do a clean installation of Windows 7.

GEEK TIP : We must emphasize that reinstalling Windows will be a very time-consuming and advanced task to resolve RpcDiag.dll problems. To avoid data loss, you must be sure that you have backed-up all of your important documents, pictures, software installers, and other personal data before beginning the process. If you are not currently backing up your data, you need to do so immediately.

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Download RpcDiag.dll Files (Malware-Tested 100% Clean)

CAUTION : We strongly advise against downloading and copying RpcDiag.dll to your appropriate Windows system directory. Microsoft typically does not release Windows DLL files for download because they are bundled together inside of a software installer. The installer's task is to ensure that all correct verifications have been made before installing and placing RpcDiag.dll and all other DLL files for Windows. An incorrectly installed DLL file may create system instability and could cause your program or operating system to stop functioning altogether. Proceed with caution.

Windows Vista

File Name

Software Version

File Version

Architecture

RpcDiag.dll

32-bit (x32)

Expand for Detailed File Information +

OS Version:	Windows Vista
File Size:	8192
MD5 Checksum:	fc5334402815913243d033e907f73483
SHA1 Checksum:	cf71fd8c24d32758be51fe4e904fbc2ab96abfcf
SHA256 Checksum:	bb9bbc152f91d6b97afc7dcf3cce02baec83da25421bfa2e0783f95b082c13f5
CRC32:
File Directory Location:	C:\Windows\SysWOW64\

File Version, System, and Machine Information
There is no information available.

RpcDiag.dll

6.0.6001.18000

6.0.6001.18000 (longhorn_rtm.080118-1840)

32-bit (x32)

Expand for Detailed File Information +

OS Version:	Windows Vista
Software:	Microsoft® Windows® Operating System
Software Version:	6.0.6001.18000
File Version:	6.0.6001.18000 (longhorn_rtm.080118-1840)
File Size:	7680
File Date:	01/21/2008
MD5 Checksum:	b545d98ea63a4af64a74b71935ea6da1
SHA1 Checksum:	70a0f0cdfc92356b555c12eab71e63eb81d04f2b
SHA256 Checksum:	ba3582c1a49216e55e704ca4de2d75059e18c0f9995c9fe6eeee6ec3bd4f66b2
CRC32:
File Directory Location:	C:\Windows\System32\

File Version, System, and Machine Information
File Type:	Win64 DLL
Image Version:	6.0
Initialized Data Size:	4096
Linker Version:	8.0
Machine Type:	AMD AMD64
PE Type:	PE32+
Subsystem:	Windows command line
Subsystem Version:	6.0
File Modification Date/Time:	01/21/2008

Windows 7

File Name

Software Version

File Version

Architecture

RpcDiag.dll

6.1.7600.16385

6.1.7600.16385 (win7_rtm.090713-1255)

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 7
Software:	Microsoft® Windows® Operating System
Software Version:	6.1.7600.16385
File Version:	6.1.7600.16385 (win7_rtm.090713-1255)
File Size:	7680
File Date:	07/14/2009
MD5 Checksum:	72b8003e4558277c880cfa27f1148d45
SHA1 Checksum:	26461194d8e74e64657266105a9046e8917b9399
SHA256 Checksum:	062468c565d48d217ee18f2b8f54091773e2278b438f402f7081b51d585794f0
CRC32:
File Directory Location:	C:\Windows\System32\

File Version, System, and Machine Information
File Type:	Win64 DLL
Image Version:	6.1
Initialized Data Size:	4096
Linker Version:	9.0
Machine Type:	AMD AMD64
PE Type:	PE32+
Subsystem:	Windows command line
Subsystem Version:	6.1
File Modification Date/Time:	07/14/2009

RpcDiag.dll

64-bit (x64)

Expand for Detailed File Information +

OS Version:	Windows 7
File Size:	8192
MD5 Checksum:	0eb5c0ba891a6efe27da312d8c623e96
SHA1 Checksum:	ed9adc513d5332dff66d5648451f43888c15ee32
SHA256 Checksum:	ca6355f2082c13f52ed8c90b11b694452cc9de14157033ed465d601e27832236
CRC32:
File Directory Location:	C:\Windows\SysWOW64\

File Version, System, and Machine Information
There is no information available.

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Files Related to RpcDiag.dll

DLL Files Related to RpcDiag.dll

File Name	Description	Software Program (Version)	File Size (bytes)	File Location
DDORes.dll	Device Category information and resources	Microsoft® Windows® Operating System (6.2.9200.16384)	15526400	C:\Windows\inf\
wscsvc.dll	Windows Security Center Service	Microsoft® Windows® Operating System (6.1.7600.16385)	97280	C:\WINDOWS\Tasks\
Windows.Devices.Printe...	Windows.Devices.Printers.Extensions	Microsoft® Windows® Operating System (6.3.9600.17415)	33280	C:\Windows\SysWOW64\
repdrvfs.dll	WMI Repository Driver	Microsoft® Windows® Operating System (10.0.15063.0)	303616	C:\Windows\System32\DriverStore\FileRepository\...
NgcCtnr.dll	Microsoft Passport Container	Microsoft® Windows® Operating System (10.0.15063.0)	328192	C:\Windows\System32\

Other Files Related to RpcDiag.dll

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OneX_v1.xsd	XML Schema Definition	Windows 8.1	5957	C:\Windows\L2Schemas\
OneX_v1.xsd	XML Schema Definition	Windows Vista	5957	C:\Windows\L2Schemas\
WWAN_profile_v1.xsd	XML Schema Definition	Windows 7	6201	C:\Windows\L2Schemas\
WLANAP_profile_v1.xsd	XML Schema Definition	Windows 8	7504	C:\Windows\L2Schemas\
WLANAP_profile_v1.xsd	XML Schema Definition	Windows 10	7548	C:\Windows\L2Schemas\

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