Cannot import error accessing the registry

While importing files in Registry Editor, if you get Cannot import reg key, Error accessing the registry error, these troubleshooting suggestions will help you fix the issue. This unusual error message can appear on your computer when the Registry Editor has some issues or some other process is controlling the Registry Editor files.

The entire error message says:

Registry Editor, Cannot import reg file: Error accessing the registry

If you cannot import a .reg Registry file and see Error accessing the registry message, follow these steps to resolve the issue:

1. Restart your computer
2. Try in Safe Mode
3. Use Administrator account
4. Take full ownership of the Registry key

To learn more about these solutions in detail, continue reading.

1] Restart your computer

As mentioned earlier, if the Registry Editor or Registry file is being processed by another program in any way, there is a chance of getting this error on your computer. No matter how many ways you try to import, you will encounter the same issue while importing.

The worst thing is that you may not be able to detect the program using Task Manager. However, you can use the Task Manager to close all the opened programs or recently opened programs and corresponding processes.

However, if it doesn’t help, you can restart your computer. It will close all the processes and apps at once. Following that, you will be able to import the Registry files without any error.

2] Try in Safe Mode

If you have recently installed any driver or hardware, and the problem started after that, you can try to import the Registry files in Safe Mode. Safe Mode excludes all the third-party processes at once so that you can get a fresh-like experience while using your computer. Therefore, follow this guide to boot your PC in Safe Mode. Then, try to import the Registry file.

3] Use Administrator account

At times, not having permission might cause this issue. For your information, some HKEY_LOCAL_MACHINE keys might not work when you do not sign in to an administrator account. If so, you need to use an administrator account to get this problem resolved. If you wish, you can enable the in-built administrator account and try to import the data with it.

4] Take full ownership of the Registry key

There are some Registry keys and values that require to have proper permissions. Otherwise, you might encounter the aforementioned issue. Let’s assume that your exported Registry files include some keys that your user account doesn’t have permission to access. In such situations, you must take full ownership of the file. No matter whether you want to modify the key or import it into the Windows Registry, you must obtain full ownership.

There are two ways to gain ownership of a Registry key. First, you can use the manual method. However, if you want to get things done quickly, you can opt for our RegOwnit. This freeware allows users to take full control and ownership of Windows Registry keys with a click.

This should resolve your problem.

Read: How to monitor and track Registry changes in Windows

How do you fix Cannot import, Not all data was successfully written?

If you see Cannot import Registry File, Not all Data was successfully written to the Registry error, you need to follow almost the same guide as mentioned above. For example, you need to sign in to an administrator account, boot in the Safe Mode and try again, take full control of the Registry key, etc.

Read: Cannot import file: The specified file is not a registry script

How do you fix Cannot import, Error accessing the registry?

If you get Cannot import error accessing the registry error while importing, you must sign in to an administrator account to get it resolved. However, if it doesn’t work, you need to use the System Restore point to get it fixed. However, before using the System Restore point, it is highly recommended to use the first solution.

Read: How to switch between HKLM and HKCU quickly in Registry Editor.

Sometimes, when applying the registry settings using a .reg file, you may get one of the following errors:

Cannot import file.reg: Not all data was successfully written to the registry. Some keys are open by the system or other processes, or you have insufficient privileges to perform this operation.

Cannot import file.reg: Error accessing the registry.

Registry files (or registration entries) are files that are used to deploy registry settings quickly to other computers. The registration entries have a file extension .reg that can be run by double-clicking or using the reg.exe command line. You can also manually import .reg files from the Registry Editor window.

Cause

The above errors are caused if the user account that’s running the .reg file doesn’t have the necessary write permissions for the registry keys mentioned inside the file. It could be possible that you’re trying to modify a system-wide setting while logged in as a Limited user. If you’re logged in as administrator and still the error is seen, read below:

• The first error “Not all data was successfully written to the registry” denotes that the system was able to access the registry key, but unable to create or write to the specified registry values.
• The other error “Error accessing the registry” occurs when the system is not able to create or access the registry branch specified in the .reg file.

Either way, these errors are caused by missing write permissions for the specified registry keys.

When an error is encountered during the registry import process, Windows would skip to the next line and execute the rest of the instructions in the .reg file, without abruptly stopping the merge/import process. Let’s say, the .reg file is configured to write to two different registry locations. If it’s unable to write to the 1st location, it skips to the next line and attempts to run the rest of the commands.

To prevent the “Error accessing the registry”, “Not all data was successfully written to the registry” or similar errors from occurring, reapply the registry file from an administrator account.

If the problem persists, from an administrator account, launch the Registry Editor (regedit.exe) assign the necessary (write) permissions for the registry keys you’re trying to modify.

Check out these articles to know how to fix the permissions for a specific registry key:

• Take Ownership of a Registry Key And Assign Full Permissions
• Take Ownership of Registry Key & Assign Permissions Using Command-line

But, for which registry key should I modify the permissions? Read below for the answer.

How do you find out which entry in a .reg file is causing the problem?

Sample Scenario: Let’s say you have a .reg file that has instructions to modify values in different registry branches. Here’s an example:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINESOFTWAREClassesPhotoViewer.FileAssoc.PngDefaultIcon]
"oldicon"="%SystemRoot%System32imageres.dll,-71"

[HKEY_LOCAL_MACHINESOFTWAREClassesPhotoViewer.FileAssoc.TiffDefaultIcon]
@="d:iconsicons.dll,5"
"oldicon"="%SystemRoot%System32imageres.dll,-122"

[HKEY_LOCAL_MACHINESOFTWAREClassesPhotoViewer.FileAssoc.BitmapDefaultIcon]
"oldicon"="%SystemRoot%System32imageres.dll,-70"

When you run that .reg file, you may get the following error:

Cannot import file.reg: Not all data was successfully written to the registry. Some keys are open by the system or other processes, or you have insufficient privileges to perform this operation.

(Once an error is encountered, Windows skips to the next line and carries out the rest of the instructions in the file.)

Narrowing down the registry key

To know which registry key is causing the problem, track down the ACCESS DENIED event(s) using the Process Monitor utility from Microsoft. Process Monitor tracks registry and file system accesses in real-time and logs the result for each event.

For more information, check out the following articles:

• How to Track “Access Denied” Registry and File Events Using Process Monitor
• How to Use Process Monitor to Track Registry and File System Changes

Note: If the Registry Editor (which runs the .reg file type by default) knows that certain registry keys can’t be written to, it doesn’t attempt to modify those registry values. However, it carries out the registry key (not value) creation operation if the .reg file has instructions to create a new key. In case the operation fails, it would encounter the ACCESS DENIED error.Whereas the reg.exe command-line tool would right away create the key or write to every key/value mentioned in the .reg file. So, the reg.exe tool would be ideal for us to track the ACCESS DENIED events.

So, with Process Monitor tracking mode On, open a Command Prompt (admin) window and use the following command-line syntax to import a .reg file:

reg.exe  import  filename_with_path.reg

If Process Monitor is currently in tracking mode, it shows the ACCESS DENIED entries exactly.

The error occurs because the PhotoViewer.FileAssoc.Tiff branch is owned by the TrustedInstaller account and your account doesn’t have write access to it.

(Likewise, in a production environment, you may have a locked-down Policies registry key. In that case, attempting to write to a subkey under Policies would cause the error “Error accessing the registry”)

Now, all you need to do is launch the Registry Editor and fix the permissions for those registry keys. This resolves the “Cannot import filename.reg. Not all data was successfully written to the registry.” error.

Fix: Error Accessing the Registry

Some users are getting the “error accessing the registry” error when trying to merge a registry key on a Windows computer. Most affected users report that the issue occurred after they did a re-install of their Windows version and tried to open a .reg file. The issue is mostly encountered on Windows 7, Windows 8 and Windows 10.

Cannot import. Error accessing the registry

What is causing the “error accessing the registry” issue?

We researched this error message by looking at various user reports and the repair strategies that they used to either circumvent or resolve the issue entirely. Based on our investigations, there are a couple of common scenarios that will trigger this particular error message:

• Registry File doesn’t have administrative privileges – This scenario is quite common with fresh Windows installs/reinstall. If Registry Editor hasn’t been opened before, it’s likely that the program doesn’t have the necessary permissions to merge the .reg file with your current registry.
• System file corruption is causing the error – There are confirmed cases where this error appeared due to a suite of corrupted system files that were interfering with the importing abilities of the Registry Editor utility. If that’s the case, there are two confirmed solutions (system restore and repair install) that are known to resolve the issue.

If you’re struggling to resolve this particular error message, this article will provide you with a selection of verified troubleshooting steps. In the area that follows, you’ll discover several potential fixing methods that other users in a similar situation have used to get the issue resolved.

For the best results, follow the methods below in order until you discover a fix that is applicable to your current situation and manages to resolve the issue.

Method 1: Importing the registry file with administrator privileges

As several affected users have suggested, chances are that you’re dealing with a privilege issue. Most likely the Registry Editor utility doesn’t have enough permissions to merge the file yet. This is a fairly common thing with new Windows installations where the Registry Editor hasn’t been opened before.

Several users that were struggling to resolve the same error message have reported that the issue was finally resolved after they opened Registry Editor with Administrative privileges and use the Import menu to merge the files. Here’s a quick guide on how to do this:

1. Press Windows key + R to open up a Run dialog box. Then, type “regedit” and press Ctrl + Shift + Enter to open up Registry Editor with administrative privileges. Typing Regedit in Run to Open Registry Editor
2. At the UAC (User Account Control) prompt, choose Yes to grant administrative privileges. Granting administrative permissions to Registry Editor
3. Inside Registry Editor, go to File > Import using the ribbon bar at the top. Using the built-in Import menu of Registry Editor
4. Use the Import menu to navigate to the location of the file that you’re trying to merge. Once you get there, select it and click Open to merge it with your current registry. Merging the key with the current registry

Note: The same principle applies to those situations where you encounter the error when trying to import a .reg key automatically via a .bat file. In order for it to work, you’ll need to run it from an elevated CMD window – press Windows key + R, type “cmd” and press Ctrl + Shift + Enter to open a Command Prompt window with administrative privileges.

This procedure should have successfully circumvented the “error accessing the registry” error. If you’re still getting the error or this method is not applicable to your current situation, move down to the next method below.

Method 2: Performing a System Restore

If you’ve just started getting this error message out of the blue (you didn’t perform a Windows reinstall recently), it’s possible that a system file has become corrupted and is preventing the merging operation from completing.

In this particular case, users finding themselves in a similar situation have managed to get the issue resolved by using the System Restore wizard to revert the machine to a previous point in time (when registry operations were functioning properly).

Using an older system restore point will return your machine state to how it was when the backup was created. This will fix any errors that might have appeared during that time, but will also get rid of any applications and user settings that you installed or created during that time.

Here’s a quick guide on using the System Restore wizard:

Press Windows key + R to open up a Run dialog box. Then, type “rstrui” and press Enter to open the System Restore wizard.

If you’re still encountering the “error accessing the registry” error, move down to the next method below.

Method 3: Performing a repair install

If you’ve come this far without a result, it’s very likely that you’re encountering this issue because of system file corruption. Most likely, a system file or service that is used during the registry importing process is corrupted and can no longer be accessed.

Several users that have been struggling with precisely the same error have reported that the issue was finally resolved after they performed a repair install.

A repair install is a non-destructive procedure that will refresh all Windows components without touching any of your personal files or applications. It does roughly the same thing as a clean install, but leaves your applications, user preferences and personal files out of the equation.

If you decide to do a repair install, you can follow the instructions present in this article (here).

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Cannot import .REG file; Not all data was successfully written to registry

Sometimes, when applying the registry settings using a .reg file, you may get one of the following errors:

Registry files (or registration entries) are files that are used to deploy registry settings quickly to other computers. The registration entries have a file extension .reg that can be run by double-clicking or using the reg.exe command line. You can also manually import .reg files from the Registry Editor window.

Cause

The above errors are caused if the user account that’s running the .reg file doesn’t have the necessary write permissions for the registry keys mentioned inside the file. It could be possible that you’re trying to modify a system-wide setting while logged in as a Limited user. If you’re logged in as administrator and still the error is seen, read below:

• The first error “ Not all data was successfully written to the registry ” denotes that the system was able to access the registry key, but unable to create or write to the specified registry values.
• The other error “ Error accessing the registry ” occurs when the system is not able to create or access the registry branch specified in the .reg file.

Either way, these errors are caused by missing write permissions for the specified registry keys.

When an error is encountered during the registry import process, Windows would skip to the next line and execute the rest of the instructions in the .reg file, without abruptly stopping the merge/import process. Let’s say, the .reg file is configured to write to two different registry locations. If it’s unable to write to the 1st location, it skips to the next line and attempts to run the rest of the commands.

Fix: Error “Not all data was successfully written to the registry”

To prevent the “Error accessing the registry”, “Not all data was successfully written to the registry” or similar errors from occurring, reapply the registry file from an administrator account.

If the problem persists, from an administrator account, launch the Registry Editor ( regedit.exe ) assign the necessary (write) permissions for the registry keys you’re trying to modify. Registry Editor – Permissions… context menu option

But, for which registry key should I modify the permissions? Read below for the answer.

How do you find out which entry in a .reg file is causing the problem?

Sample Scenario: Let’s say you have a .reg file that has instructions to modify values in different registry branches. Here’s an example:

When you run that .reg file, you may get the following error:

(Once an error is encountered, Windows skips to the next line and carries out the rest of the instructions in the file.)

Narrowing down the registry key

To know which registry key is causing the problem, track down the ACCESS DENIED event(s) using the Process Monitor utility from Microsoft. Process Monitor tracks registry and file system accesses in real-time and logs the result for each event.

Note: If the Registry Editor (which runs the .reg file type by default) knows that certain registry keys can’t be written to, it doesn’t attempt to modify those registry values. However, it carries out the registry key (not value) creation operation if the .reg file has instructions to create a new key. In case the operation fails, it would encounter the ACCESS DENIED error.Whereas the reg.exe command-line tool would right away create the key or write to every key/value mentioned in the .reg file. So, the reg.exe tool would be ideal for us to track the ACCESS DENIED events.

So, with Process Monitor tracking mode On, open a Command Prompt (admin) window and use the following command-line syntax to import a .reg file:

If Process Monitor is currently in tracking mode, it shows the ACCESS DENIED entries exactly.

The error occurs because the PhotoViewer.FileAssoc.Tiff branch is owned by the TrustedInstaller account and your account doesn’t have write access to it.

(Likewise, in a production environment, you may have a locked-down Policies registry key. In that case, attempting to write to a subkey under Policies would cause the error “Error accessing the registry”)

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Что делать с ошибкой при доступе к реестру, когда не удается импортировать на Windows 10

Через реестр вносятся изменения в системные параметры ПК. Чтобы не копаться в настройках редактора, многие люди импортируют готовые твики. Но иногда не удается импортировать файл «.reg», так как выскакивает ошибка при доступе к реестру на Windows 10. Из-за этого изменения не вступают в силу, и приходится вручную редактировать настройки. Для решения проблемы нужно ознакомиться с причинами ее возникновения, а затем обратиться к рекомендациям специалистов.

Причины проблемы

Ошибка при импорте файла доставляет пользователю массу неудобств. И, как показывает практика, перезагрузка компьютера или повторная загрузка твика не помогают решить проблему. Дело в том, что неполадки касаются не целостности самого reg-файла, а отдельных настроек доступа и конфигурации системы.

В связи с этим в качестве причин возникновения неполадок выделяются следующие факторы:

• отсутствие прав администратора;
• повреждение системных файлов;
• воздействие вирусов.

Хотя специалистами выделяется не так много причин данной проблемы, устранение неполадок порой занимает длительное время. Поэтому рекомендуется обратиться к алгоритму, который будет представлен далее. Он включает в себя все нюансы выполнения процедуры и позволяет сэкономить время, отказавшись от лишних действий.

Что делать при ошибке записи в реестре

Сообщение об ошибке пользователь видит при попытке запуска REG-файла двойным кликом ЛКМ. Обычно этого действия достаточно, чтобы править реестр. Однако появление сообщения о невозможности выполнения операции свидетельствует о проблемах файла или системных настроек. Устранить неполадки удается как встроенными, так и сторонними средствами.

Применение программы ExecTI

Первым делом стоит обратить внимание на приложение ExecTI. Оно вносит записи нового значения параметра в обход системным средствам, благодаря чему любые неполадки в работе ОС не влияют на процесс изменений реестра.

Выполнив подготовительные действия, можно переходить к непосредственному решению проблемы, когда не сохраняются изменения в реестре. В данном случае нужно действовать по следующему алгоритму:

1. Запустите ExecTI.
2. Укажите путь к BAT-файлу, нажав на кнопку «Browse».
3. Нажмите на кнопку «ОК».

После трех нехитрых шагов откроется синее окно, оповещающее о процессе выполнения операции. При условии, что все действия были обработаны верно, в окне появится сообщение «Операция успешно завершена».

Импорт REG-файла в безопасном режиме

Если вы испытываете проблемы с импортом файла через программное обеспечение от сторонних разработчиков, то можете выполнить операцию системными средствами. Правда, для этого придется запустить компьютер в безопасном режиме:

• Откройте окно «Выполнить» комбинацией клавиш «Win» + «R».
• Введите запрос «msconfig».

• Нажмите на кнопку «ОК».
• Перейдите в раздел «Загрузка» открывшегося окна «Конфигурация системы».

• Отметьте галочкой пункт «Безопасный режим».
• Нажмите на кнопку «Применить» для сохранения настроек.

После перезагрузки компьютер будет запущен в безопасном режиме. Теперь попробуйте импортировать REG-файл стандартным способом, используя двойной клик левой кнопкой мыши. В большинстве случаев это позволяет обработать запрос, а затем вы можете перейти в стандартный режим работы компьютера, вновь открыв «Конфигурацию системы» и внеся необходимые изменения в настройки.

С помощью Registrar Registry Manager

Мощный инструмент редактирования реестра Windows 10 без обращения к встроенным средствам компьютера. Преимущество Registrar Registry Manager заключается в том, что вам не придется конвертировать файлы. Все действия выполняются с исходным REG-файлом в соответствии с инструкцией:

• Нажмите на кнопку «Home Edition».

• Кликните ЛКМ по вкладке «File» и выберите пункт «Import».

• Укажите путь к REG-файлу и нажмите на кнопку «Открыть».

После импорта должно появиться небольшое окошко с сообщением «Import successfully completed». Оно станет свидетельством успешного выполнения операции, и вам останется нажать на кнопку «ОК», чтобы сохранить настройки. Если и через Registrar Registry Manager выскочит ошибка (что маловероятно), то не поленитесь осуществить дополнительные действия:

• Выполните очистку компьютера от мусора и лишних записей в реестре. Для этого можно воспользоваться приложением CCleaner.

• Запустите проверку на вирусы и удалите подозрительные файлы.
• Восстановите системные файлы в случае их повреждения через запрос «sfc/scannow», который обрабатывается средствами Командной строки.

Теперь нет ни единого шанса, что проблема продолжит давать о себе знать. Конфликт будет исчерпан, и вы без труда импортируете файл любым удобным способом.

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