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Error 745: An Essential
File Is Missing [win98x]
IMPORTANT: This article contains information about editing the
registry.
Before you edit the registry, you should first make a backup copy of
the
registry files (System.dat and User.dat). Both are hidden files in the
Windows folder.
SYMPTOMS
========
When you attempt to connect to a remote computer using Dial-Up
Networking,
you may receive the following error message:
Error 745: An
essential file is missing.
Re-install Dial-Up Networking.
CAUSE
=====
This error message can occur when a Dial-Up Networking dynamic-link
library (DLL) file is missing or damaged.
RESOLUTION
==========
WARNING: Using Registry Editor incorrectly can cause serious problems
that
may require you to reinstall Windows 95/98. I cannot guarantee that
problems resulting from the incorrect use of Registry Editor can be
solved. Use Registry Editor at your own risk.
NOTE: For information about how to edit the registry, view the
Changing
Keys And Values online Help topic in Registry Editor (Regedit.exe).
Note
that you should make a backup copy of the registry files (System.dat
and
User.dat) before you edit the registry.
To resolve this issue, remove and reinstall Dial-Up Networking. To do
this, follow these steps:
1. Click Start, point to Settings, and then click Control Panel.
2. Double-click Add/Remove Programs.
3. Click the Windows Setup tab, click Communications, and then click
Details.
4. Click the Dial-Up Networking check box to clear it, click OK, and
then
click OK again.
5. Click Start, click Shut Down, click Restart Your Computer, and then
click Yes.
6. Click Start, point to Programs, and then click Windows Explorer.
7. If it exists, rename the Rasapi32.dll file located in the
Windows\System folder.
For information about how to rename a file, click Start, click Help,
click the Index tab, type "renaming" (without quotation marks), and
then double-click the "Renaming files" topic.
8. Extract a new copy of the Rasapi32.dll file from your original
Windows
95/98 CD-ROM or floppy disks into the Windows\System folder. To do
this,
use the appropriate method:
Extracting Rasapi32.dll from the Windows 95 CD-ROM:
a. Click Start, point to Programs, and then click MS-DOS Prompt.
b. Type "cd\" (without quotation marks), and then press ENTER.
c. Insert the Windows 95 CD-ROM into the CD-ROM drive, and then close
the Windows 95 screen if it appears.
d. Type the following line at the command prompt, and then press ENTER
where <drive> is the drive letter assigned to the floppy disk drive
the Windows 95 floppy disk is located in, and where <windows> is the
name of the folder in which Windows is installed.
e. Type "exit" (without quotation marks), and then press ENTER to
return to windows.
Extracting Rasapi32.dll in Windows 98:
Extract a new copy of the Rasapi32.dll file from your original
Windows 98 CD-ROM into the Windows\System folder using the System File
Checker tool. To start the System File Checker tool, click Start,
click
Run, type "sfc.exe" (without quotation marks) in the Open box, and
then
click OK.
For more information about using the Extract tool, click the Start
button, point to Programs, click MS-DOS prompt, type "extract"
(without
quotation marks), and then press ENTER. For more information about
using
the Extract tool or System File Checker, see the following article
in the Microsoft Knowledge Base:
ARTICLE-ID: Q129605
TITLE : How to Extract Original Compressed Windows Files
9. Use Registry Editor to delete the SMM_Files key under the following
registry key:
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\
RemoteAccess\Authentication
10. Click Start, click Settings, and then click Control Panel.
11. Double-click Add/Remove Programs.
12. Click the Windows Setup tab, click Communications, and then click
Details.
13. Click the Dial-Up Networking check box to select it, click OK, and
then click OK again.
14. When you are prompted to restart your computer, click Yes.
15. If you had previously installed Dial-Up Scripting in Windows 95,
rename
the Smmscrpt.dll file in the Windows\System folder, and then reinstall
Dial-Up Scripting.
For information about installing Dial-Up Scripting, please see the
following article in the Microsoft Knowledge Base:
ARTICLE-ID: Q153038
TITLE : How to Automate Dial-Up Networking Connections
MORE INFORMATION
================
To determine the DLL file used by Dial-Up Networking, view the Path
value
under the following registry key:
The default value is "Rasapi32.dll." If Dial-Up Scripting is installed
in
Windows 95, this value may be "Smmscrpt.dll."
This value may have been overwritten by a third-party Internet
provider. It has been reported that you may be able to edit the
registry and replace the Path value with the appropriate DLL value,
either Rasapi32.dll or Smmscrpt.dll, without having to remove and
reinstall Dial-Up Networking.
CompuServe's WOW! software, which is included with Windows 95 OEM
Service
Release 2 (OSR2), changes the Path value to "Smmcctb.dll" and adds
"CISPPP: PPP connection using CompuServenetworks" to the available
server
types in the Dial-Up Networking connection properties.
The CompuServe WOW! software should no longer be necessary because
CompuServe discontinued the WOW! service as of January 31, 1997.
For information about the CompuServe WOW! service, please see the
following article in the Microsoft Knowledge Base:
ARTICLE-ID: Q162377
TITLE : CompuServe WOW! Service to Be Discontinued
It has been reported that this error message may occur if the PPP
Manager installed by the CompuServe WOW! Service is installed. To
resolve this issue, remove the PPP Manager. To remove the PPP Manager,
follow these steps:
1. Click Start, point to Settings, click Control Panel, and then
double-click Add/Remove Programs.
2. On the Install/Uninstall tab, click PPP Manager, and then click
Add/Remove. If PPP Manager is not listed on the Install/Uninstall
tab, click RPADLL, and then click Add/Remove.
3. Click OK.
4. Close Control Panel, and then restart the computer.
This Page LAST UPDATED:Thursday, 08. November 2007 18:27:12 -0600
