Error “Windows Installer Service could not be accessed” when Installing Symantec Endpoint Protection
Please try the 4 steps below to resolve the issue in the same sequence
Step 1: Unregister and re-register the Windows Installer
- Click Start, click Run, type MSIEXEC /UNREGISTER, and then click OK. Even if you do this correctly, it may look like nothing occurs.
2. Click Start, click Run, type MSIEXEC /REGSERVER, and then click OK. Even if you do this correctly, it may look like nothing occurs, or you may briefly see an hourglass.
Then try to run the Install again. If it works good else come to the next step
Step 2: Verify the DCOM permissions
This method involves changing the DCOM default impersonation level to Identify, removing the Msisip.dll file,
To do this, follow these steps:
To verify Distributed COM properties
1. On the Windows taskbar, click Start > Run.
2. Type the following, and then click OK:
dcomcnfg
3. Do one of the following, depending on your operating system:
· In Windows XP/2003, click Component Services > Computers > My Computer. Then right-click My Computer and click Properties.
· In all other versions of Windows, go on to the next step.
4. On the Default Security or Default COM Security tab, under Default Access Permissions, click Edit Default.
5. Verify that Administrators, Interactive, and System accounts are set to Allow Access, and then click OK.
6. Under Default Launch Permissions, click Edit Default.
7. Verify that the Administrators, Interactive, and System accounts are set to Allow Launch, and click OK.
8. Do one of the following, depending on your operating system:
· In Windows XP/2003, skip the two following steps.
· In all other versions of Windows, go on to the next step.
9. In the Default Configuration Permissions section, click Edit Default.
10. In the Registry Key Permissions window, verify that the following are set to Full Control, and then click OK:
CREATOR OWNER
...\Administrators
SYSTEM
11. On the Default Properties tab, verify that Default Impersonation Level is set to Identify.
12. Click Apply, and then click OK.
13. Restart the computer for the changes to take effect.
Then try to run the Install again. If it works good else come to the next step
Step 3: Verify the registry permissions
- Click Start, click Run, then type Regedt32.
- For each of the registry hives, follow these steps:
- Select the hive.
- For Windows XP, on the Edit menu, click Permissions.
For Windows 2000 and Windows NT 4, on the Security menu, click Permissions.
- Verify that the SYSTEM account has been added and that it has Full control. If it does not, add the SYSTEM account with Full control.
Step 4: Give Full Control permission to the SYSTEM account
- Start Windows Explorer, right-click the computer's root hard drive, and then click Properties.
- Click the Security tab, and then click Add.
- In the Select Users, Computers, or Groups dialog box, click the SYSTEM account, click Add, and then click OK.
- Under Allow, click to select the Full Control check box, and then click OK.
- Click the TEMP folder and then verify that the SYSTEM account has full control.
Then try to run the Install again.