How to Fix Outlook Subfolders Missing in Cached Mode?

The problem of Outlook subfolders missing in cached mode comes due to the conflict between Outlook client and other software. That’s why, this article will provide the reasons behind this problem. And the solutions to solve it.

In Outlook, Cached exchange mode is a mode to connect Outlook with an Exchange server. When the Internet connection is lost, users can work offline in Outlook. When the Internet connection is back, the changes are synchronized with Outlook and the mailbox server. This synchronized copy then stores in the local hard drive. This copy is also known as an OST file. With this, you can also see all folders and subfolders that you created in Outlook Web App.

Causes of Outlook Subfolders missing in Cached Mode

Sometimes users face an issue where they see their subfolders but they can’t access them. There can be many reasons for this problem.

The most common reason is the conflict between Outlook and other software.
The issue can occur if the user profile or email is corrupted.
It can also happen if the OST file is damaged or corrupt, due to a system crash, malware or virus attack, etc.
The issue can be possible if you accidentally deleted the subfolders.
At last, it also happens if the necessary settings in Outlook are disabled.

Solutions to fix Outlook Subfolders Missing in Cached Mode

We have explained the reason behind this problem. So, we come to the question of how to solve Outlook subfolders missing in Cached mode. For that, we use two approaches, the first is the manual approach. In this, we can solve the problem using various methods like resetting the mailbox, disabling the cached mode, enabling shared folders, creating subfolders, etc. This approach is free but has a lot of drawbacks. That’s why we use another approach. Professional approach, in this we use a third-party tool to solve the problem. Therefore two approaches are.

Manual approach: Using various methods to solve the problem.
Professional approach: in this, we use a third-party tool to solve the problem.

Manual Approach for Outlook Subfolders missing in Cached Mode

This approach has five main methods, all are free. Resetting mailbox size settings, limiting the number of items per folder, disabling cached exchange mode, enabling shared folders, and creating subfolders. Below explain these methods in detail.

Resetting Mailbox Size Settings

The problem of outlook subfolders missing in cached mode is caused by the size of the OST file exceeding its maximum limit. This happens because the OST file is over the size limit. Outlook removes items in mailbox folders automatically. To solve that, you have to check the size of the mailbox and increase the size of the OST file.

Open the Outlook program. Go to Account settings.
Again click on Account settings. Select your account and click Change.
Now, Keep the mail offline to All option. Click on the Next option and OK.
Close the account settings and restart Outlook.

After this, your OST file size increases, and the issue of Outlook subfolders missing in cached mode is solved.

Limiting the Number of Items per Folder

Outlook subfolders missing in cached mode issue can also be caused, due to too many items stored in a single folder and too many subfolders being created. For that, the users should limit the number of items stored approx 5000. For subfolders no more than 500. With this user can ensure that all the items are synchronized and cached.

Disabling Cached Exchange Mode

With this method, it solved many problems including Outlook subfolders missing in Cached mode.

Open Outlook program. Click on the File option, then Account settings.
Choose the account you want to change and click on the Change button.
On the Use Cached Exchange Mode option, uncheck the box. Click on Next.
Click on Finish and then the Close button.
Restart the Outlook program and check whether the issue has been resolved or not.

Enabling Shared Folders Download

When you add a shared mailbox to your folder pane, your only primary folder is downloaded by default. That’s why, to fix the issue of Outlook subfolders missing in Cached mode. You must enable shared folder download.

Open Outlook and go to File. click on Account settings and again the Account settings option.
In the Email tab, double-click your Exchange account.
Now, click on More Settings and then click the Advanced tab.
Check the Download Shared Folders option.
Click on Apply and then OK.

Creating Subfolders

You can also solve the problem of Outlook subfolders missing in cached mode. By creating new subfolders.

First, exit your Outlook program. Restart it in Safe mode by holding the Ctrl key while you start Outlook.
Once it starts, click on File. then, Open&Export option and then, Import/Export.
In the Import and Export window screen, select Export to a file. Click on the Next option.
Select (.pst) and click Next.
Select the folder that you want to export and click on Include Subfolders.
Enter your name for the export file and click on Finish.

Now, open the PST file in Outlook. Now, you can see all your subfolders. Copy the content of the folders in your original PST file. Delete the exported PST file.

Limitation of Manual Approach

The manual approach is free but it also has more drawbacks such as.

If the OST file is corrupted then these methods cannot work.
It is difficult for non-technical users.
These methods are used for temporary uses.
There are chances that you can miss some data from OST files.

Hence, these methods are not good for Outlook subfolders missing in cached mode. That’s why, we use another approach that is free and more reliable than this approach.

Professional Approach for Outlook Subfolders missing in Cached Mode

Outlook uses two file formats OST and PST file. OST file is used to save a copy of the mailbox in offline mode. Whereas PST files are used to save email, events, calendars, etc in Outlook online. When a manual approach fails to solve the problem then a professional approach can help the user to solve it. In this, we use SysTools OST to PST converter. In this, we convert the OST file into a PST file, which solves the problem in just a few minutes.

Features of Software

This software not only converts the files but also offers various features.

This software converts all types of OST files into PST files like inaccessible, Orphaned, and large OST files.
It provides Normal scan and Advanced scan options.
You can preview your files in any mode like Hex, MIME, Html, etc.
The software provides two options to search your file: Search file and select file.
It also provides advanced filter settings like split PST files, date filters, and Categories.

The process to Convert OST to PST File

First download and open Software. Click on Add file option.
Select the Select file from the Add file option. Browse the OST file you want to convert.
Click on Add to start the scan. After scanning click on the Yes option.
Now, Preview your file and click on Export.
Select PST for Export type and click on Advance settings.
Now choose the filter you want and click on the Save button.
At last click on Export. Your OST file starts converting into a PST file.

Conclusion

In this article, we explain the reason behind the Outlook subfolders missing in cached mode. To solve this problem, we use two approaches. First is manual approach, we use five different methods. These methods are free but have a lot of limitations. That’s why we use a professional approach to solve the problem. This approach is better than the manual approach as it provides more features and is free to use.