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Outlook Crash Exception Code 0xc00005 Resolved

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Published By Karen Chard 
Rollins Duke
Approved By Rollins Duke
Published On October 2nd, 2025
Reading Time 6 Min Read

Beginning Remarks: Seeing Outlook crash exception code 0xc00005 could feel extremely annoying especially when you are in need to access your mailbox urgently. This blog will discuss the reasons behind the occurrence of such an error, manual techniques to resolve the issue, and a desktop solution that can resolve the issue well.

Let Us Describe a Scene Happening in Real Life!

Imagine a scene where you have to send a crucial report to your project manager. For this, you click Send, and all of a sudden you see that Outlook is crashing with this message exception code 0xc00005. Your work stops and anxiety starts. Many MS Outlook users tend to search for different solutions to resolve such issues. Here are the 2 most common queries people have often in this regard:

Ques: Why does Outlook crash and we see exception code 0xc00005?

Ans: This mostly happens when the PST file(s) gets corrupted, or there are faulty add-ins, or due to outdated updates, or maybe because of big email attachments.

Ques: How to resolve Outlook crash exception code 0xc00005 speedily?

Ans: You can disable add-ins, repair PSTs, or use an offline desktop solution for permanent resolve.

When Outlook Crash Exception Code 0xc00005 Appears

Such an error is usually seen when MS Outlook PST file gets damaged/corrupted or when MS Outlook interacts with any faulty 3rd-party add-in. This may also show up when updates tend to be missing, or MS Outlook tends to face memory problems. The crash mostly forces this email program to suddenly close.

Statistics Are Always Eye-Openers

As per Microsoft’s official support (Gartner IT Research) forums, MS Outlook tends to crash among the top 3 problems reported by corporate users globally. Gartner also reports that email downtimes can lead to business losses up to 5600 dollars every minute.

A Real User Case

Rihana happens to be finance manager at an MNC firm. She reported that each time she tried to attach an MS Excel file, Outlook crashes when attaching files with this exception code 0xc00005. This delayed her client’s communication for a long time, thus the loss!

Get to Know When This Problem Appears the Most

Following are some of common scenarios where people tend to see such an error:

  • Outlook crashes when sending email if the PST file is too big.
  • Outlook crashes when adding attachment with large file sizes.
  • Outlook crashes on send receive when the mailbox gets overloaded.
  • Outlook crashes on send email when add-ins or rules interfere.
  • Outlook is crashing my computer because of outdated updates or due to memory conflicts.

Manual Techniques to Resolve the Error

Below are some of the manual fixes or techniques that you can try:

1st. Try Disabling Any Faulty Add-ins

  1. First, Go to File → Options → Add-ins → Disable suspicious add-ins.

Pros: This is a simple process and it is free as well.

Cons: With this trick, you could tend to lose some functionalities.

2nd Try Repairing PSTs Using ScanPST.exe

  1. Try locating ScanPST.exe in your MS Outlook installation folder. Run this to repair your minorly corrupted PST file.

Pros: This is an in-built Microsoft tool.

Cons: Such trick works ONLY for minor corruption levels.

3rd. Try Updating MS Outlook & MS Windows

  1. You can install the latest security patches.

Pros: This trick can fix compatibility issues.

Cons: Such a technique does not help if the PST file has been heavily damaged or corrupted.

Manual Techniques Usually Fail to Perform

  • With such a process, you can’t repair big PST files.
  • These ways are lengthy and take a lot of time.
  • Results are not guaranteed in such ways.
  • There is always a risk of data loss during repair.
  • Such processes work only for minor corruption levels.

Become a Smart Outlook User by Taking This Desktop Tool

The RecoveryTools PST Repair Tool has been designed in such a way that it helps to resolve Outlook exception code c00005 issue by repairing corrupted PSTs safely. Such a tool also proves fruitful even when you have a query like – why am I getting spam in my Outlook Inbox.

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Main Attributes of the Tool That Are Very Helpful:

  • The software helps in repairing heavily corrupted PSTs with no data loss at all.
  • The tool tends to restore mail messages, contact details, email attachments, calendars items etc.
  • This utility tool supports fixing issues such as Outlook crashing 0xc00005.
  • The software works with all MS Outlook versions.
  • Even big sized Outlook PST files can be repaired using this tool.

Working Steps You Must Note to Perform the Process:

  1. Start by installing & opening the software.
    installing & opening the software
  2. Proceed by adding the Outlook PST file which shows Outlook crash exception code 0xc00005.
    adding the Outlook PST file
  3. Go ahead to select recovery mode and preview the data. After that, go on by choosing a saving format.
    preview the data
  4. Complete the process by clicking “Start Repair” to repair the file.
    clicking “Start Repair” to repair the file

3rd-Party Desktop Tool Better Than Manual Techniques

Manual Techniques Desktop Tool
Limited to small issues Repairs big PSTs
Risk of incomplete repair Full accuracy
Lengthy process Fast & automated
Technical steps needed Easy for novice users

 
You Must Note the Following Dos & Don’ts

  • DO keep your MS Outlook program updated.
  • DO make use of a desktop tool for accuracy.
  • DO NOT use any manual techniques for very big PST files.
  • DO NOT ignore repeated Outlook program crashes; resolve the issues immediately.

You Might Be Interested in These Questions

Q: How to resolve Outlook crashes when attaching files issues?

A: You can try by compressing the PST file, updating MS Outlook program, or repairing PSTs using a good pro tool.

Q: Why it so happens that Outlook crashes on send receive?

A: This happens because of overloaded mailboxes, damaged/corrupted PST files, or faulty add-ins.

Q: How to resolve Outlook crashes when sending email issues with no tool?

A: Without a tool, you can try manual technique but that is only when corruption is minor; otherwise, it is advised to use a professional repair solution.

Ending Remarks

Witnessing Outlook crash exception code 0xc00005 issue can stop your work continuity. Manual techniques might give small or limited relief. A pro-level certified solution tends to ensure safer, speedier, & stable recovery.