Tally Internal Error: Software Exception c0000005 (Memory Access Violation) – Bison Knowledgebase

Tally Internal Error: Software Exception c0000005 (Memory Access Violation)

📅 16 Jan 2026 📂 General 👁 23 views

The Software Exception c0000005 (Memory Access Violation) error in Tally is a critical internal error that typically occurs during GST-related operations, data access, or background processing. This error indicates that Tally attempted to read or write memory that it was not permitted to access, usually due to corrupted data, damaged program files, system conflicts, or security software interference.

This Knowledge Base article provides a technical, step-by-step troubleshooting guide to identify root causes and permanently resolve the issue.

Product Overview

Product: Tally (ERP 9 / Prime)
Vendor: Tally Solutions
Primary Usage: Accounting, GST compliance, inventory management, statutory reporting

Key Product Features (Relevant to This Issue)

GST return preparation and upload
Company data management
Real-time statutory compliance
Data rewrite and repair utilities
Automatic software updates

Error Description

Exact Error Message:

Internal Error. Contact Tally Solutions. Software Exception c0000005 (Memory Access Violation)

What This Means (Technical Explanation)

c0000005 is a Windows-level exception code
Indicates illegal memory access
Triggered when:
- Tally accesses corrupted data blocks
- Required DLL files are damaged or blocked
- Antivirus or OS security blocks execution
- Incompatible Tally and Windows versions interact

Common Scenarios Where This Error Occurs

While updating GST details
During GSTR-1 / GSTR-3B upload
While opening a company
During reconciliation
Immediately after a Tally or Windows update

Use Cases

Scenario	Impact
GST return filing	Upload failure
Company open	Company inaccessible
Data rewrite	Process crashes
Multi-user access	Unexpected termination
Update completion	Partial installation

Price Information

Tally software: Paid license (pricing varies by edition and region)
Troubleshooting steps: No additional cost
Official support: Included with valid Tally Subscription & Support (TSS)

Step-by-Step Resolution Guide

Step 1: Restart and Isolate

Close Tally completely
Restart Windows
Launch only Tally (no other heavy applications)
Retry the failed operation

Step 2: Repair Tally Installation (Highly Recommended)

Close Tally

Open:


Control Panel → Programs → Programs and Features

Select Tally
Click Change → Repair
Allow repair to complete
Restart the system

Step 3: Rewrite Company Data

Open Tally
Press:
```
Ctrl + Alt + R
```
Select the affected company
Choose Rewrite
Wait until completion

This process rebuilds damaged data structures without deleting records.

Step 4: Reset GST Configuration

Open company
Go to:
```
F11 → Statutory & Taxation → GST
```
Set Enable GST = No
Save and exit company
Reopen company
Enable GST again and save

Step 5: Exclude Tally from Antivirus / Windows Defender

Add exclusions for:


C:\Program Files\Tally\
C:\Tally\

Temporarily disable antivirus to test.

Step 6: Update Tally to Latest Release

Open Tally
Press:
```
Ctrl + Alt + U
```
Allow update to complete fully
Restart Tally

Commands & Shortcuts Reference


Ctrl + Alt + R   → Rewrite Company Data
Ctrl + Alt + U   → Update Tally
F11              → Company Features

Common Issues & Fixes

Issue	Resolution
Error in one company only	Rewrite company
Error in all companies	Repair Tally
Error during GST upload	Reset GST + check internet
Error after update	Re-run repair
Random crashes	Check antivirus exclusions

Security Considerations

Antivirus software may falsely detect Tally components
Blocking DLL execution can cause memory access violations
Always download updates from official Tally servers
Avoid running cracked or modified versions

Best Practices

Maintain daily backups
Avoid force-closing Tally
Keep Windows and Tally versions compatible
Run Tally as Administrator
Ensure minimum 4 GB RAM
Shut down system properly
Perform data rewrite periodically

When to Contact Official Support

Contact Tally Support if:

Error persists after repair and rewrite
Fresh installation still fails
Error occurs on multiple systems with same data

Prepare:

Tally version
Windows version
Error screenshots
Steps to reproduce issue

Conclusion

The Software Exception c0000005 (Memory Access Violation) in Tally is typically caused by data corruption, blocked program files, or system conflicts. In most cases, the issue can be resolved through repairing the installation, rewriting company data, resetting GST configuration, and adjusting security software. Following best practices significantly reduces the risk of recurrence.

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