> For the complete documentation index, see [llms.txt](https://help.bizanalyst.in/biz-analyst-manual/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.bizanalyst.in/biz-analyst-manual/support/problems-with-tally-after-installing-biz-analyst/mav-memory-access-violation.md).

# Tally crashes with MAV(Memory Access Violation)error

![](/files/-LTpUim2UKuULRHt3Yp_)

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**Update Tally release if TSS is renewed.**
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**Then 1st we need to take data backup.**
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**Step 1:** Rewrite of data will solve the issue.

![](/files/-LTpdlbrFHapCvevDIId)

* Go to the **Gateway of Tally** or the **Company Info**. menu.
* Press **Ctrl+Alt+R** . The List of Companies appears in the Rewrite Company screen.
* **Select the company** for which you want to rewrite data. Press Enter to rewrite the data.
* Once the rewriting procedure is complete, you will be able to access your restored data.

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**If still this MAV Error occurs then you need to go for Zero Rewrite Process**
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**Step 2:** Zero Re-write

![](/files/-LTpb6SKZ_2-c49bbrL8)

* Close Tally in all systems Need to do this process on Server System.
* Press **Win+R>** Mention: **Target path (space) Data (space) 0 >OK**
* After that Tally will get open and again press **Ctrl+Alt+R** . The List of Companies appears in the Rewrite Company screen.
* Select the company for which you want to rewrite data. **Press Enter** to rewrite the data.